December 2015 – Summary

While the wet and windy conditions continued to dominate our weather with storms Desmond, Eva and Frank visiting our islands, it was the temperature that was the meteological highlight of the month with it being our warmest December on record, as it was for the rest of the UK.

Wet and windy was how December started and continued through until the new year. Despite these conditions being the most memorable, the only record to be broken was our highest ever
December rain rate, that of 67.0mm/hour on the 9th. The first of the December storms to arrive on our shores late on the 4th was Desmond, which brought winds of up to 58mph and heavy rain, but nothing like that which was experienced elsewhere in the UK especially Cumbria, where there was widespread flooding and record rainfall.

Dull, wet and breezy conditions continued until the 10th when a brief spell of brighter and calmer conditions occurred and although it was still wet, it was colder with the only air frost of the month on the 12th. The 10th saw our lowest ever December humidity (58%) and the 14th was our first dry December day since 26th December 2012!

The winds increased from the 15th onwards, but on that day we experienced our highest ever December temperature with the mercury rising to 12.6°C. Our highest ever December Heat Index (12.6’C), Dew Point (12.1°C) and Apparent Temperature (12.6°C) also occurred on that day as well as our highest ever December Minimum Temperature of 10.8°C.

It remained wet and windy to such an extent that Eva passed off shore almost un-noticed overnight on the 23rd. with winds gusting to 53mph. Heavy overnight rain on the 28th signalled the imminent arrival of Frank which hit our shores on the 29th , but again it was the mainland which bore the brunt of the winds and heavy rain resulting in yet more severe flooding. A total of 35.4mm of rain fell in 48 hours with winds peaking at 65 mph, the highest recorded during the month.

Throughout the month, temperatures remained high although it felt chill in the strong winds. With an average temperature of 7.7°C, it was our warmest December here at Askernish.

Two other records of note during the month was that the maximum wind gust of 65 mph was the lowest maximum to be recorded in any December as was the maximum December atmospheric
pressure of 1018.87 on the 13th.

 
Statistical Summary

Temperature (°C):
Mean (1 minute)              7.7                         Record high for the month of December
Mean (min+max)             7.2
Mean Minimum                4.9                        Record high for the month of December
Mean Maximum               9.5                        Record high for the month of December
Minimum                          -0.2     12th
Maximum                         12.6    18th             Record high for the month of December
Highest Minimum            10.8     18th            Record high for the month of December
Lowest Maximum             4.1      13th
Air frosts                1

Rainfall (mm):
Total for month          174.2
Wettest day                 21.8         28th
High rain rate              67.0           9th              Record high for the month of December
Rain days                      30
Days >=  2.0mm          23
Days >=  10.0mm          6
Days>=  20.0mm           1
Dry days       1

Wind (mph):
Highest Gust                65.0        29th                Lowest maximum recorded in any December
Average Speed          15.8
Wind Run               11760.0 miles
Gale days                    3
Pressure (mb):
Maximum                   1018.87           13th         Lowest maximum recorded in any December
Minimum                    979.35              29th

Days with snow falling                         0
Days with snow lying at 0900              0

Total hours of sunshine        29.1
No. of Sunshine Days           16
Sunniest Day          6th         3.3 hours

Autumn 2015 – Summary

The beginning of December heralds the start of the meteorological winter and the end of autumn which consists of the months September, October and November. The many extreme weather events that have already occurred around the world this year, including the fact that 2015 will be the warmest Globally, have been attributed to the El Niño conditions that have existed for most of the year, plus global warming. While El Niño has a less obvious effect on our weather here in the Northern hemisphere, its influence upon weather systems around the world can be long lived.

Here in Askernish, it might surprise people that this Autumn has been our driest and also our dullest. Although the enduring memory might be the storms that have been personalised by the Met Office who now name them, as much as they huffed and puffed, gusting to 67 mph and reaching wind speeds of 41 mph, they failed to surpass the winds of Autumn 2011 when the seasonal average wind speed was 11.7 mph

Summaries for the three months that constitute Autumn precede this summary on the blog.

Statistical Summary

Temperature (°C):
Mean (1 minute)             10.6
Mean (min+max)            10.6
Mean Minimum                8.4
Mean Maximum             12.8
Minimum                           1.1            20th November
Maximum                        19.3            11th September
Highest Minimum           12.9            10th September            Record low for Autumn
Lowest Maximum            5.6             20th November
Air frosts                             0
Days above 20˚C            0
Days above 15˚C           14
Days below 0˚C               0
Days below -5˚C              0

Rainfall (mm):
Total for period              205.6                                                  Record low for Autumn
Wettest day                     16.4        12th September               Record low for Autumn
High rain rate                   65.0        23rd September
Rain days                         69
Days >= 2.0mm               33
Days >= 10.0mm               2
Days>= 20.0mm                0
Dry days                           22

Wind (mph):
Highest Gust                   67.0         12th November               Record high for Autumn
Average Speed              11.3
Wind Run                  24,717.6 miles
Gale days                           1

Pressure (mb):
Maximum                1037.63         30th September
Minimum                   981.48         15th November                 Record high for Autumn

Days with snow falling                       0
Days with snow lying at 0900            0

Total hours of sunshine       179.4 hours                                 Record low for Autumn
No. of Sunshine Days              60                                            Record low for Autumn
Sunniest Day               8.6 hours      29th September

November 2015 – Summary

With NOAA having already announced that 2015 is going to be Globally the warmest year on record, plus the UK experiencing its highest ever November temperature, these are phenomena that seem to have passed us by here. All that we can confidently predict is that 2015 will not break any temperature records at Askernish, but it will be our windiest ever year. As for our November, it will be remembered for the Met Office naming storms for the very first time and then the first three, Abigail, Barney and Clodagh, ensuring that this was our windiest November with our first ever November gale day.

November began here as it did elsewhere in the UK with higher than average temperatures. While we did not experience the record breaking November “highs” seen elsewhere, we did record our highest ever November Minimum Temperature of 12.2°C on the 1st and then our highest November Apparent Temperature of 11.7°C on the 4th. Temperatures remained above “the norm” for the first ten days of the month, helped by persistent cloud which maintained the night time temperatures but very much restricted the hours of sunshine recorded.

Abigail, the first storm to be named by the Met Office, passed over our islands on the 12/13th leaving in it’s wake our windiest November day and our first ever November gale day on the 12th. On that day, the winds peaked at 67.0 mph, and with a maximum wind speed of 41.0 mph. The average wind speed for the day was 27.0 mph which produced a wind run 645.9 miles, all of which are records for the month of November.

There was little respite before the remnants of Hurricane Kate brought windy conditions again on 16th, and although Kate was not as bad as Abigail, this was only because it had less persistent wind speeds. Kate was quickly followed by Barney which although passing further south, it still brought some wet and windy conditions on the 17/18th.

Barney left us exposed to a more Northerly air stream which was very much colder and gave us the first taste of winter. A mixture of rain, sleet , hail and an ever present chill wind persisted until the end of the month, during which time Clodagh arrived on the 29th, again bringing strong winds gusting to 60 mph on that day.

The cloud and overcast conditions, a feature throughout the month, ensured that it was our dullest November with only 33.1 hours of sunshine being recorded on 19 sunshine days, both record lows for November. Despite the cloud, the early part of the month was relatively dry. Even so, there were 28 rain days during the month, 18 of which had more than 2mm of rain fall, another unwelcome record for November.

Statistical Summary

Temperature (°C):
Mean (1 minute)           8.6
Mean (min+max)          8.3
Mean Minimum             6.3
Mean Maximum         10.3
Minimum                       1.1      20th
Maximum                    12.9        1st
Highest Minimum        12.2       1st           Record High for the month of November
Lowest Maximum         5.6       20th
Air frosts 0

Rainfall (mm):
Total for month         103.6
Wettest day                10.4       15th
High rain rate              61.0        8th
Rain days                      28
Days >= 2.0mm            18                        Record High for the month of November
Days >= 10.0mm            1
Days>= 20.0mm             0
Dry days                          2

Wind (mph):
Highest Gust               67.0      12th           Record High for the month of November
Average Speed         14.1                        Record High for the month of November
Wind Run             10133.0 miles                Record High for the month of November
Gale days                    1
Predominent Direction      SW

Pressure (mb):
Maximum           1022.90           22nd
Minimum             981.48             15th

Days with snow falling    0
Days with snow lying at 0900      0

Total hours of sunshine    33.1                 Record Low for the month of November
No. of Sunshine Days         19                  Record Low for the month of November
Sunniest Day                   22nd          4.3 hours

Our Windiest November Day

Abigail may have been and gone, but she did produce our windiest November day with an average wind speed of 27.0 mph and a wind run of 645.9 miles. During the day, winds gusted to 67 mph with a wind speed of 41 mph, both record highs for November. More surprisingly this was our first November Gale Day to be recorded here in  Askernish.

 

October 2015 – Summary

October turned out to be a contrary month being our warmest, driest and dullest here at Askernish and with warnings that hurricane Joaquin would pass our way, we experienced our calmest ever day.

High pressure continued to dominate early in the month giving rise to our highest October pressure of 1034.99 mb being recorded on the 1st. This domination continued until the 10th bringing with it dryer and calmer conditions, but it also brought its fair share of cloud.

Hurricane Joaquin was forecast to influence our weather mid-month which it did, but not in the way that everyone expected. The remnants of the hurricane passed further south through the Bay of Biscay leaving us becalmed. We enjoyed 3 days with extremely light winds and an eerie silence during which time, with a wind run of just 14.0 miles and an average wind speed of 0.6 miles, the 16th became our calmest ever day here at Askernish.

It was all change from the 19th onwards with the a series of low pressure fronts bringing more familiar weather that lasted until the end of the month, that of stronger winds, some rain and more cloud. The cloud cover was enough to ensure our dullest October while the developing rain was less than usual resulting in it being our driest. The same cloud kept temperatures higher too making this our warmest October with an average of 11.0°C.

Summary for October 2015

Temperature (°C):
Mean (1 minute)           11.0                      Record high for the month of October
Mean (min+max)          11.1                      Record high for the month of October
Mean Minimum               8.8
Mean Maximum           13.4
Minimum                         2.8      12th
Maximum                      16.3      27th
Highest Minimum          12.0      9th
Lowest Maximum          11.1      24th           Record high for the month of October
Air frosts           0

Rainfall (mm):
Total for month      58.8                        Record low for the month of October
Wettest day             7.8      20th           Record low for the month of October
High rain rate         63.2      28th
Rain days                21
Days >= 2.0mm      –    9                       Record low for the month of October
Days >= 10.0mm    –    0                       Record low for the month of October
Days>= 20.0mm    –    0
Dry days      10

Wind (mph):
Highest Gust      54.0      21st
Average Speed      10.0
Wind Run      7401.2 miles
Gale days      0

Pressure (mb):
Maximum      1034.99      1st                 Record high for the month October
Minimum      989.91        5th

Days with snow falling      0
Days with snow lying at 0900      0

Total hours of sunshine           62.0
No of Sunshine Days              20               Record low for the month of October
Sunniest Day      16th          7.3 hours

September 2015 – Summary

September’s weather was dominated by high pressure over much of the UK, but with it being always to the south or east of The Hebrides, we remained on the fringe and so did not enjoy the fine, settled conditions experienced elsewhere. Being on the edge of these high pressure systems throughout the month, our weather was influenced by their position, deflecting a succession of weak Atlantic fronts in our direction that brought cloudy and breezy conditions, with the wind oscillating between North and South throughout the month.

Despite the frequent spells of overcast, windy and often chilly conditions, September was a welcome relief from the wet and windy conditions that have prevailed throughout the year. It is also continuing the trend of becoming our driest month with 43.2 mm of rain falling during the month, some 85 mm below the 10 year average (2001-2010) and 23.2 mm below the 5 year average of 2011-15

As high pressure was the major influence during September, it was no surprise that the highest September pressure was recorded here during the month, the highest being 1037.63 mb on the 30th.

Statistical Summary

Temperature (°C):
Mean (1 minute)                 12.1
Mean (min+max)                12.4
Mean Minimum                  10.0
Mean Maximum                  14.7
Minimum                               5.1               30th
Maximum                             19.3              11th
Highest Minimum                12.9              10th       Lowest recorded in September
Lowest Maximum                12.8              3rd
Air frosts                                 0

Rainfall (mm):
Total for month                 43.2
Wettest day                      16.4          12th
High rain rate                    65.0          23rd
Rain days                             20
Days >= 2.0mm       –           6
Days >= 10.0mm     –           1
Days>= 20.0mm      –           0
Dry days                              10

Wind (mph):
Highest Gust                   47.0           12th
Average Speed             10.0
Wind Run                     7183.1  miles
Gale days                             0
Predominant Direction       S

Pressure (mb):
Maximum                1037.63          30th             Record high for September
Minimum                  991.64           15th

Days with snow falling                    0
Days with snow lying at 0900         0

Total hours of sunshine                 84.3
Sunshine Days                                 21
Sunniest Day            29th              8.6 hours

Summer 2015 – Summary

With the passing of August, it signals the end of the meteorological summer which consists of the months of June, July and August. Despite July being the hottest on record globally, a phenomenon that passed us by as our summer was the coldest, wettest, windiest and dullest on record here at Askernish. As mentioned in the Spring summary, this is an El Niño  year so nothing should really come as a surprise.

Summaries for the three months that constitute the summer season precede this on the blog, but it is a summer that is probably best forgotten.

Summary for Summer 2015

Temperature (°C):
Mean (1 minute)                     12.4                                             record low for summer
Mean (min+max)                   12.7
Mean Minimum                     10.2
Mean Maximum                     15.2                                              record low for summer
Minimum                                  2.6                13th June
Maximum                                24.7               23rd August
Highest Minimum                 13.5                 30th June
Lowest Maximum                 10.4                   1st June              record low for summer
Days above 20°C    –   4
Days above 15°C    –  46                                                             record low for summer
Days below 0°C     –    0
Days below -5°C    –    0
Air frosts 0

Rainfall (mm):
Total for period               238.2                                                record high for summer
Wettest day                        17.4                    9th July
High rain rate 3                  4.4                    5th June
Rain days                              71                                                 record high for summer
Days >= 2.0mm      –     35                                                     record high for summer
Days >= 10.0mm    –       6
Days>= 20.0mm     –      0
Dry days                          21                                                      record low for summer

Wind (mph):
Highest Gust               50.0               1st June
Average Speed              9.6                                                      record high for summer
Wind Run             21107.6 miles                                           record high for summer
Gale days                     0
Predominant Wind Direction      –       South

Pressure (mb):
Maximum             1039.32                 8th June                      record high for summer
Minimum                976.84                 1st June                       record low for summer

Days with snow falling                   0
Days with snow lying at 0900      0

Total hours of sunshine               293.3                                  record low for summer
Number of sunshine days              73
Sunniest day                           14th June      12.4 hours         record low for summer

August 2015 – Summary

At last, a month that unlike its predecessors, bucked the trend of setting unwelcome records. Although it seemed to many that August was just a continuation of the wet, windy and dull conditions, it was in fact an “average” month with one unexpected exception – it was the driest August here at Askernish.

The weather throughout the month was dominated by high pressure over Scandinavia which refused to move, causing a succession of low fronts that swept across the Atlantic to linger. While these fronts persisted over the UK, they brought more of the cloudy, wet and windy conditions that seem to have been with us all year, but thankfully there were some all too brief, calmer, brighter and warmer spells in between these gathering lows.

The month began with hail storms on the 1st, 11.4mm of rain on the 2nd and the lowest pressure (998.76mb) to be recorded here in the month of August during a wet and windy night on the 4th. As each low pressure system passed, it became calmer and a little warmer, but the cloud and light rain persisted. The total rainfall for the month was 61.0 mm, making this our driest August. Perversely, rain fell on 28 days, the highest number recorded here during the month of August.

Temperatures were just a little below average for August due to the cloud raising night time temperatures to such an extent that there was only a 1.5°C variation (13.9°C – 12.4°C) on the 8th, the lowest daily temperature range recorded here in Askernish during August. In contrast, when the skies did clear, daytime temperatures rose, but overnight temperatures fell sharply causing a daily temperature range of 12.9°C (20.8°C – 7.9°C) on the 17th, the highest daily temperature range recorded here at Askernish in August. These clearer skies also allowed temperatures to rise above 20°C on two occasions. Peaking on the 23rd at 24.7°C, this was a record high for August at our station as was the associated apparent temperature (23.0°C) and heat index (24.7°C).

Although sunshine was in limited supply, 91.6 hours were recorded and shone for 0.5 hours or more on 27 days, the latter being a record high for August. The best spell was when the skies again cleared briefly on the 18th resulting in 10.4 hours of sunshine, our sunniest day of the month.

Statistical Summary

Temperature (°C):
Mean (1 minute)           13.4
Mean (min+max)         13.8
Mean Minimum            11.1
Mean Maximum           16.5
Minimum                         7.9               17th
Maximum                      24.7               23rd                           Record high for the month of August
Highest Minimum       13.3                 20th
Lowest Maximum        13.6                31st
Air frosts 0

Rainfall (mm):
Total for month             61.0                                                 Record low for the month of August
Wettest day                   11.4              2nd                           Record low for the month of August
High rain rate                30.2              28th
Rain days                       28
Dry days                           3
Days >= 2.0mm    –       11
Days >= 10.0mm  –         1                                                     Record low for the month of August
Days>= 20.0mm   –        0
Dry days                            9

Wind (mph):
Highest Gust                 41.0               4th
Average Speed              9.9
Wind Run                 7362.0 miles
Gale days                            0

Pressure (mb):
Maximum                1023.51               12th
Minimum                  988.76                3rd                           Record low for the month of August

Days with snow falling                     0
Days with snow lying at 0900          0

Total hours of sunshine             91.6
Number of sunshine days           27                                   Record high for the month of August
Sunniest day        18th               10.7 hours                       Record low for the month of August

July 2015 – Summary

Like almost every other month of this year, July followed the trend of it being the wettest, windiest, dullest, and coldest (July) on record here at Askernish.

There was a perception that the weather improved slightly during the month but low temperatures and cloud dominated, there only being the occasional bright and sunny interludes in between the bouts of rain.

The rain, heavy at times, fell on 22 days of the month, 14 of which experienced over 2.0 mm of rainfall with 4 of those days being over 10.0 mm, all records for July here at this station. The highest hourly rain for July occurred on the 7th when 7.0mm fell in less than 60 minutes. In total, 104.0 mm fell during the month, yet another unwelcome record for July here at Askernish.

With low pressure to the west over the Atlantic throughout the month, it meant that the winds veered from North to South, but whatever the direction, it drew cold air down from the north which was accompanied by cloud and rain. Whatever the direction, the winds were consistent and persistent averaging 8.8 mph resulting in a wind run of 6564.9 miles, both records for the month of July here at Askernish

While the mainland experienced its highest temperature ever recorded, that of 36.8°C at Heathrow, temperatures here struggled all month barely reached 15° C after the 6th, having risen to above 20°C for the first time this year on the 3rd (20.8°C) and then again on the 6th (20.3°C). Temperatures would have been even lower had it not been for the cloud helping night time temperatures which only varied by some 2°C on many occasions. Despite this, a dew point of 5.3°C on the 9th and a wind chill of 5.1°C on the 10th were both record lows for July. Overall, the average temperature (1 min) for the month was 12.8°C, making it the coldest July on record here at Askernish.

The same cloud caused it to be our dullest July with only 121.1 hours of sunshine, but contrary to that there were 26 days when the sun shone for more than 0.5 hours a record high for July.

Statistical Summary

Temperature (°C):

Mean (1 minute) 12.8                                      Record low for the month of July
Mean (min+max) 13.1                                    Record low for the month of July
Mean Minimum 10.5
Mean Maximum 15.7                                      Record low for the month of July
Minimum 7.7     8th
Maximum 20.8     3rd
Highest Minimum 13.1     3rd                          Record low for the month of July
Lowest Maximum 13.5     29th
Air frosts 0

Rainfall (mm):

Total for month 104.0                                    Record high for the month of July
Wettest day 17.4             9th
High rain rate 24.0       11th
Rain days 22                                                   Record high for the month of July
Days >= 2.0mm – 14                                      Record high for the month of July
Days >= 10.0mm – 4                                      Record high for the month of July
Days>= 20.0mm – 0
Dry days 9

Wind (mph):

Highest Gust     37.0     17th
Average Speed   8.8                                      Record high for the month of July
Wind Run   6564.9 miles                                 Record high for the month of July
Gale days 0

Pressure (mb):

Maximum 1023.00 3rd
Minimum 990.76 17th

Days with snow falling     0
Days with snow lying at 0900     0

Total hours of sunshine   118.7
Number of sunshine days   26                   Record high for the month of July
Sunniest day     15th       12.1 hours           Record low for the month of July

June 2015 – Summary

This years dismal weather continued with June being the coldest, wettest, windiest and dullest on record here at Askernish with many of the more unwelcome records being broken.

The month began badly with record breaking winds, rainfall and low temperatures for the month of June, all within the first 24 hours. On the 1st, the pressure fell to 974.84mb, a new low for June. This front brought winds gusting to 50mph with wind speeds of 35mph on that day plus 17.4mm of rain, 7.4mm of which fell in just one hour.  Temperatures also struggled, only reaching 10.4°C, the lowest daily maximum recorded here in June.  A combination of both wind and low temperatures resulted in an apparent temperature of -4.2°C and a wind chill of -0.1°C, both record lows for June.

Wind, rain and low temperatures continued with the wind gusting to over 40 mph, on the 5th, this being the our windiest  June day with an average wind speed of 19.1 mph and a wind run of 459.4 miles. The highest  June rain rate of 34.4 mm/hour was also recorded on the 6th.

The cool, wet and windy conditions continued until high pressure moved in from the north on the 7th bringing drier,  brighter weather, resulting in 8 consecutive days with no rain. During this period, the pressure peaked on the 8th at 1039.32mb, yet another June record. Despite there being  12.4 hours of sunshine on the 14th, temperatures remained stubbornly low. The clear skies caused some chilly nights and early mornings when temperatures fell as low as 2.6°C on the 14th resulting in a wind chill of -0.8’C,  lowering still further the June record  set on the 1st.

Cloudy, wet and misty conditions once again prevailed from the 15th onwards . The increased cloud helped temperatures improve marginally, reaching 15°C for only the second time this year on the 26th. Temperatures peaked at 16.6°C on the 30th, the lowest maximum recorded here in June.

The rain, cloud and low temperatures were all features throughout June making it a month to forget. With 73.2mm of rain and 21 rain days, this was our wettest June. With the increased cloud, the sun shone on only 20 days with 83.0 hours of sunshine making it our dullest June on record.

Temperatures struggled throughout the month only averaging 11.0°C, another record low for June. Although the wind did not seem as significant, the average wind speed for the month was 10.0 mph resulting in a wind run of 7180.7 miles, yet more June records here at Askernish.

Summary for June 2015

Temperature (°C):

Mean (1 minute)     11.0                             Record low for the month of June
Mean (min+max)   11.1                              Record low for the month of June
Mean Minimum      9.0
Mean Maximum    13.2                              Record low for the month of June
Minimum                 2.6            13th
Maximum              16.6            30th            Record low for the month of June
Highest Minimum  13.5             30th
Lowest Maximum   10.4           1st             Record low for the month of June
Air frosts       0

Rainfall (mm):
Total for month      73.2                           Record high for the month of June
Wettest day             17.4          1st           Record high for the month of June
High rain rate        34.4             5th         Record high for the month of June
Rain days                21                             Record high for the month of June
Days >=  2.0mm  –     10                         Record high for the month of June
Days >= 10.0mm  –     1
Days>= 20.0mm  –    0
Dry days               9

Wind (mph):
Highest Gust           50.0       1st             Record high for the month of June
Average Speed        10.0                     Record high for the month of June
Wind Run         7180.7 miles                 Record high for the month of June
Gale days        0
Predominant Wind Direction      SSW

Pressure (mb):
Maximum          1039.32          8th            Record high for the month of June
Minimum          976.84             1st             Record low for the month of June

Days with snow falling                 0
Days with snow lying at 0900      0

Total hours of sunshine        83.0                   Record low for the month of June
Number of sunshine days        20                 Record low for the month of June
Sunniest day       14th         12.4 hours          Record low for the month of June