Monthly Archives: December 2018

Dull December 2018

The brightness of this morning soon disappeared as the cloud filled in the blue gaps of sunshine.

This December will go down as my dullest ever with just 51.6 hours of sunshine to date. My December average over the last 12 years has been 82 hours.

The persistent dry weather since the 24th isn’t going to stop this month from being rather wet

At least it’s been mild……

A few likely 2018 stats….
Mean temp: 12.0C; warmest since 2014 (12.1C)
Sunshine: 1938 hours; sunniest since 2014 (1960 hours)
Rainfall: 854 mm; wettest since 2014 (1014 mm)

Summary for Autumn 2018

Average temperature, rainfall and sunshine belies a season of contrasts and extremes.

Mean Max: 16.4ºC
Mean Min: 7.7ºC
Mean: 12.1ºC

High Max: 25.9ºC 3 Sep
Low Max: 7.8ºC 20 Nov
High Min: 17.1ºC 13 Oct
Low Min: -4.3ºC 30 Oct
Grass Min: -6.1ºC 30 Oct

Days >25°C 1 Day
Days >20°C 23 Days
Days >15°C 51 Days
Days <10°C 7 Days

Rain Total (gauge): 253.6 mm
Rain Days >0.2 mm: 30 Days
Rain Days >1.0 mm: 26 Days
Max 24 hrs: 25.6 mm 22 Sep
Days without any rain: 60

Air Frost: 6 Days
Grass Frost: 12 Days
Snow Falling: 0 Days
Thunder Heard: 3 Days
Hail <5 mm: 4 Days
Hail >5 mm: 2 Days
Fog @ 9am: 1 Day

Total Autumn Sunshine: 411.8 Hours
Most Sunshine in a Day: 11.3 Hours 26 Sep
Average Daily Sunshine: 4.5 Hours
Sunless Days: 11 Days
Cloudless Days: 13 Days
Total Possible Sunshine: 980 Hours
Percentage of Total Sun: 42%

Summary for November 2018

A little warmer than average but very wet and rather cloudy. Warmest November since 2015 (mean = 11.2C); wettest since 2012 (187 mm); dullest since 2015 (49 hours).

Mean Max: 12.5ºC
Mean Min: 6.9ºC
Mean: 9.7ºC

High Max: 14.7ºC 5th
Low Max: 7.8ºC 20th
High Min: 12.6ºC 16th
Low Min: -2.3ºC 2nd
Grass Min: -4.4ºC 2nd

Days >10°C 24 Days
Days >5°C 30 Days
Nights >10°C 10 Days
Nights <5°C 9 Days

Rain Total (gauge): 150.9 mm
Rain Days >0.2 mm: 15 Days
Rain Days >1.0 mm: 14 Days
Max 24 hrs: 21.4 mm 27th
Days without any rain: 14
Air Frost: 3 Days
Grass Frost: 6 Days
Snow Falling: 0 Days
Thunder Heard: 3 Days
Hail <5 mm: 3 Days
Hail >5 mm: 2 Days
Fog @ 9am: 0 Days

Total Monthly Sunshine: 72.9 Hours
Most Sunshine in a Day: 9.0 Hours 2nd
Average Daily Sunshine: 2.4 Hours
Sunless Days: 7 Days
Cloudless Days: 2 Days
Total Possible Sunshine: 269.6 Hours
Percentage of Total Sun: 27%
Average Sunny Interval: 15.3 mins

Ave 10 Min Wind >39 mph: 0.00 Days
Calm: 4.07 Days 16%
Mean Wind: 5.4 mph
Max Gust: 74 mph 29th

Mean Cloud Cover: 67%
Mean RH @ 9am: 92%
Frost Duration: 18.7 Hours
Air Frost in a Day: 9.0 Hours 2nd

Mean Pressure: 1009.6 hPa
Max Pressure: 1027.5 hPa 2nd
Min Pressure: 986.9 hPa 7th

Max Dewpoint: 13.4ºC 6th
Min Dewpoint: -3.2ºC 2nd
Mean Dewpoint: 7.3ºC

Max Humidity: 100% several days
Min Humidity: 51% 1st
Mean Humidity: 87%