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
December
Weather in December
Temperature
The advent of December reveals an average high-temperature of a still frosty 6.9°C (44.4°F), showing minimal difference from the prior month. In Sywell, the nightly December temperatures experience a slight descent from daily highs to an average low of 2.6°C (36.7°F).Humidity
December is the most humid month in Sywell, United Kingdom, with an average relative humidity of 91%.Rainfall
In Sywell, in December, it is raining for 10.8 days, with typically 20mm (0.79") of accumulated precipitation. In Sywell, during the entire year, the rain falls for 153.7 days and collects up to 297mm (11.69") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Sywell, in December, during 1.6 snowfall days, 11mm (0.43") of snow is typically accumulated. In Sywell, during the entire year, snow falls for 9 days and aggregates up to 51mm (2.01") of snow.Daylight
With an average of 7h and 48min of daylight, December has the shortest days of the year.On the first day of December in Sywell, sunrise is at 7:50 am and sunset at 3:53 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 4:00 pm GMT.
Sunshine
In Sywell, the average sunshine in December is 4.3h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sywell. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Sywell?
What is the most humid month in Sywell?
What is the average humidity in December in Sywell?
How many days does it rain in December in Sywell?
How many days does it snow in December in Sywell?
What is the month with the shortest days in Sywell?
How many hours of daylight does Sywell have in December?
When are sunrise and sunset in December in Sywell?
How long on average sun shines in December in Sywell?
What are the months with the lowest UV index in Sywell?
What is the UV index reading in December in Sywell?
Average temperature in December
Sywell, United Kingdom
- Average high temperature in December: 6.9°C
The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in December: 2.6°C
The month with the highest average low temperature is August (12.7°C).
The coldest month (with the lowest average low temperature) is January (1.5°C).
Average pressure in December
Sywell, United Kingdom
- Average pressure in December: 1013.5mbar
The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in December
Sywell, United Kingdom
- Average wind speed in December: 18.5km/h
The windiest months (with the highest average wind speed) are February and December (18.5km/h).
The calmest month (with the lowest average wind speed) is July (12.8km/h).
Average humidity in December
Sywell, United Kingdom
- Average humidity in December: 91%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (78%).
Average rainfall in December
Sywell, United Kingdom
- Average rainfall in December: 20mm
The wettest month (with the highest rainfall) is June (46mm).
The driest month (with the least rainfall) is January (15mm).
Average rainfall days in December
Sywell, United Kingdom
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (9.4 days).
Average snowfall in December
Sywell, United Kingdom
- Average snowfall in December: 11mm
The month with the highest snowfall is February (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Sywell, United Kingdom
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is February (3.8 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
Sywell, United Kingdom
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 7h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Sywell, United Kingdom
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is January (16.9 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in December
Sywell, United Kingdom
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Sywell, United Kingdom
- Average cloud cover in December: 58
The month with the most cloud cover is November (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 50).
Average visibility in December
Sywell, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, July, August, September, October and December (9km).
The months with the lowest visibility are June and November (8km).
