Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The advent of December brings an average high-temperature of a still frosty 7.3°C (45.1°F), exhibiting minor difference from the previous month. In December, Radlett temperatures settle at a low of 2.9°C (37.2°F) during the nights, reflecting a minor change from daytime highs.Humidity
With an average relative humidity of 90%, December is the most humid month.Rainfall
In December, the rain falls for 12.3 days. Throughout December, 38mm (1.5") of precipitation is accumulated. In Radlett, during the entire year, the rain falls for 159.2 days and collects up to 359mm (14.13") of precipitation.Snowfall
Months with snowfall in Radlett, United Kingdom, are January through March, November and December. December is the month with the most snowfall in Radlett. Snow falls for 2 days and accumulates 20mm (0.79") of snow.Daylight
December has the shortest days of the year, with an average of 7h and 54min of daylight.On the first day of December in Radlett, sunrise is at 7:46 am and sunset at 3:54 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 4:01 pm GMT.
Sunshine
The average sunshine in December is 4.4h.UV index
The months with the lowest UV index in Radlett are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Enhance your sun protection with tightly woven, yet airy clothing. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Radlett?
What is the most humid month in Radlett?
What is the average humidity in December in Radlett?
How much does it rain in Radlett in December?
When does it snow the most in Radlett?
How many days does it snow in December in Radlett?
What is the month with the shortest days in Radlett?
How many hours of daylight does Radlett have in December?
When are sunrise and sunset in December in Radlett?
How many hours of sunshine does Radlett have in December?
What are the months with the lowest UV index in Radlett?
How high is the UV index in December in Radlett?
Average temperature in December
Radlett, United Kingdom
- Average high temperature in December: 7.3°C
The warmest month (with the highest average high temperature) is July (21.6°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in December: 2.9°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in December
Radlett, United Kingdom
- Average pressure in December: 1014.2mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in December
Radlett, United Kingdom
- Average wind speed in December: 18km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in December
Radlett, United Kingdom
- Average humidity in December: 90%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Radlett, United Kingdom
- Average rainfall in December: 38mm
The wettest month (with the highest rainfall) is June (44mm).
The driest month (with the least rainfall) is September (19mm).
Average rainfall days in December
Radlett, United Kingdom
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is September (10.7 days).
Average snowfall in December
Radlett, United Kingdom
- Average snowfall in December: 20mm
The month with the highest snowfall is December (20mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Radlett, United Kingdom
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Radlett, United Kingdom
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in December: 4h and 2min
The months with the most sunshine are July and August (Average sunshine: 8h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in December
Radlett, United Kingdom
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is September (17.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Radlett, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Radlett, United Kingdom
- Average cloud cover in December: 58
The months with the most cloud cover are February and November (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 48).
Average visibility in December
Radlett, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Radlett, United Kingdom
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