December weather forecastCrawley Down, United Kingdom
December
Weather in December
December, the first month of the winter in Crawley Down, is still a chilly month, with an average temperature ranging between min 3.8°C (38.8°F) and max 8°C (46.4°F).Temperature
December's presence marks an average high-temperature of a frosty 8°C (46.4°F), subtly varied from November's 10.5°C (50.9°F). Night temperatures during December in Crawley Down experience a slight downturn, averaging a cold 3.8°C (38.8°F).Humidity
The most humid month in Crawley Down, United Kingdom, is December, with an average relative humidity of 89%.Rainfall
The month with the most rainfall is December, when the rain falls for 14.1 days and typically aggregates up to 45mm (1.77") of precipitation.Snowfall
Months with snowfall in Crawley Down are January through April, November and December. In Crawley Down, United Kingdom, during December, snow falls for 1.8 days and regularly aggregates up to 9mm (0.35") of snow. Throughout the year, in Crawley Down, there are 10.4 snowfall days, and 54mm (2.13") of snow is accumulated.Daylight
December has the shortest days of the year in Crawley Down, with an average of 8h and 0min of daylight.On the first day of December, sunrise is at 7:42 am and sunset at 3:56 pm. On the last day of the month, sunrise is at 8:03 am and sunset at 4:03 pm GMT.
Sunshine
In December, the average sunshine is 4.1h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Crawley Down. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 2 suggests this advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Crawley Down, United Kingdom
- Average high temperature in December: 8°C
The warmest months (with the highest average high temperature) are July and August (21.3°C).
The month with the lowest average high temperature is January (6.9°C).
- Average low temperature in December: 3.8°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 (2.3°C).
Average pressure in December
Crawley Down, United Kingdom
- Average pressure in December: 1015mbar
The month with the highest atmospheric pressure is September (1017.1mbar).
The month with the lowest atmospheric pressure is November (1010.8mbar).
Average wind speed in December
Crawley Down, United Kingdom
- Average wind speed in December: 17.9km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest months (with the lowest average wind speed) are July, August and September (13.4km/h).
Average humidity in December
Crawley Down, United Kingdom
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in December
Crawley Down, United Kingdom
- Average rainfall in December: 45mm
The wettest month (with the highest rainfall) is December (45mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in December
Crawley Down, United Kingdom
- Average rainfall days in December: 14.1 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is September (10.5 days).
Average snowfall in December
Crawley Down, United Kingdom
- Average snowfall in December: 9mm
The month with the highest snowfall is February (20mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Crawley Down, United Kingdom
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (3.9 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
Crawley Down, United Kingdom
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 4h and 6min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Crawley Down, United Kingdom
- Average sunshine days in December: 14 days
The month with the most sunshine days is September (16.1 days).
The month with the least sunshine days is February (11.6 days).
Average UV index in December
Crawley Down, 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
Crawley Down, United Kingdom
- Average cloud cover in December: 60
The month with the most cloud cover is February (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 47).
Average visibility in December
Crawley Down, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
