Monthly Archives: November 2017

25th November 2017 – Cold & Sunny

A bit of a shock to the system today with a maximum temperature of just 7.7C and a keen NW breeze.

The first single digit maximum since March 7th (9.7C), and the coldest day since the 12th February (6.6C). Only 10 days so far this year have been colder than today.

To make up for it the sunshine has been almost unbroken and this has pushed the monthly total to 108 hours.

This year is going to go down as a warm one. The current annual mean temperature is 12.5C. And talking of single digit maximum temperatures, there have been 27 days this year so far with a temperature less than 10C.

Sunny Start to November 2017

Unbroken sunshine today despite cumulus build-up over the land. The sky stayed clear out over the bay with a double hit from the low but warm sun that still has a bit of ooomph (the sun itself and its reflection off the sea) in it.

Today’s 8.6 hours has brought the sunshine total to 47 hours for the first 8 days of this month.

And all that sunshine has warmed the afternoons with the mean temperature running at 14.0°C but there’s been several chilly nights and an early season frost last night with a minimum of -0.6°C.

My November sunshine average for the last 12 years has been 93 hours, so just over halfway there already.

Summary for October 2017

Warmer, drier and a little cloudier than normal. Mostly settled, benign and dry with the majority of the rainfall occurring between the 17th and the 23rd. A sunny start then cloudy mid-month before a sunshine recovery for the final week.

Mean Max: 17.1ºC
Mean Min: 9.9ºC
Mean: 13.5ºC

High Max: 20.4ºC 8th
Low Max: 13.6ºC 17th
High Min: 15.8ºC 14th
Low Min: 1.6ºC 30th
Grass Min: -0.6ºC 30th

Days >20°C 2 Days
Days >15°C 26 Days
Nights >10°C 19 Days
Nights <5°C 6 Days

Rain Total (gauge): 36.1 mm
Rain Days >0.2 mm: 11 Days
Rain Days >1.0 mm: 8 Days
Max 24 hrs: 8.6 mm 19th
Days without any rain: 20

Air Frost: 0 Days
Grass Frost: 1 Day
Thunder Heard: 0 Days
Hail <5 mm: 0 Days
Hail >5 mm: 0 Days
Fog @ 9am: 0 Days

Total Monthly Sunshine: 117.6 Hours
Most Sunshine in a Day: 9.8 Hours
Average Daily Sunshine: 3.8 Hours
Sunless Days: 4 Days
Cloudless Days: 3 Days
Total Possible Sunshine: 331.3 Hours
Percentage of Total Sun: 35%

Ave 10 Min Wind >39 mph: 0.00 Days
Calm: 7.49 Days 24%
Mean Wind: 3.8 mph
Max Gust: 40 mph 19th
Mean Cloud Cover: 62%

Mean Pressure: 1018.6 hPa
Max Pressure: 1035.7 hPa 27th
Min Pressure: 994.7 hPa 19th

Max Dewpoint: 17.8ºC 1st
Min Dewpoint: 1.0ºC 30th
Mean Dewpoint: 11.1ºC

Max Humidity: 100% Several days
Min Humidity: 54% 6th
Mean Humidity: 87%