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
In Glastonbury, United Kingdom, the average high-temperature in December is almost the same as in November - a chilly 8.1°C (46.6°F). The average low-temperature, in December, is 4.1°C (39.4°F).Humidity
The months with the highest humidity are January, November and December, with an average relative humidity of 89%.Rainfall
December is the month with the most rainfall. Rain falls for 15.4 days and accumulates 67mm (2.64") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Glastonbury, in December, snow falls for 0.8 days, with typically accumulated 5mm (0.2") of snow. Throughout the year, there are 8.2 snowfall days, and 53mm (2.09") of snow is accumulated.Daylight
With an average of 7h and 59min of daylight, December has the shortest days of the year.On the first day of December in Glastonbury, sunrise is at 7:52 am and sunset at 4:07 pm. On the last day of the month, sunrise is at 8:14 am and sunset at 4:12 pm GMT.
Sunshine
In December, the average sunshine in Glastonbury is 4h.UV index
The months with the lowest UV index in Glastonbury are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 2 in December transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
FAQ
What is the temperature in December in Glastonbury?
What is the most humid month in Glastonbury?
What is the average humidity in December in Glastonbury?
What is the wettest month in Glastonbury?
How much does it rain in Glastonbury in December?
How much does it snow in Glastonbury in December?
What is the month with the shortest days in Glastonbury?
What is the average length of the day in December in Glastonbury?
What time are sunrise and sunset in December in Glastonbury?
How long on average sun shines in December in Glastonbury?
When is the lowest UV index in Glastonbury?
How high is the UV index in December in Glastonbury?
Average temperature in December
Glastonbury, United Kingdom
- Average high temperature in December: 8.1°C
The warmest month (with the highest average high temperature) is July (19.9°C).
The month with the lowest average high temperature is January (7.2°C).
- Average low temperature in December: 4.1°C
The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is February (2.5°C).
Average pressure in December
Glastonbury, United Kingdom
- Average pressure in December: 1014.4mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.2mbar).
Average wind speed in December
Glastonbury, United Kingdom
- Average wind speed in December: 17.6km/h
The windiest month (with the highest average wind speed) is February (18.3km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).
Average humidity in December
Glastonbury, United Kingdom
- Average humidity in December: 89%
The months with the highest relative humidity are January, November and December (89%).
The month with the lowest relative humidity is July (82%).
Average rainfall in December
Glastonbury, United Kingdom
- Average rainfall in December: 67mm
The wettest month (with the highest rainfall) is December (67mm).
The driest months (with the least rainfall) are April and September (30mm).
Average rainfall days in December
Glastonbury, United Kingdom
- Average rainfall days in December: 15.4 days
The month with the highest number of rainy days is November (16.5 days).
The month with the least rainy days is February (12.4 days).
Average snowfall in December
Glastonbury, United Kingdom
- Average snowfall in December: 5mm
The month with the highest snowfall is January (25mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Glastonbury, United Kingdom
- Average snowfall days in December: 0.8 days
The months with the highest number of snowfall days are January and February (2.7 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
Glastonbury, 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 0min
The month with the most sunshine is July (Average sunshine: 8h and 0min).
The month with the least sunshine is November (Average sunshine: 3h and 48min).
Average sunshine days in December
Glastonbury, United Kingdom
- Average sunshine days in December: 12.8 days
The month with the most sunshine days is September (15.3 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in December
Glastonbury, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Glastonbury, United Kingdom
- Average cloud cover in December: 60
The month with the most cloud cover is November (Cloud cover 62).
The month with the least cloud cover is May (Cloud cover 50).
Average visibility in December
Glastonbury, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June and December (9km).
The months with the lowest visibility are July, August, September, October and November (8km).
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