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 transition into December shows a subtle variation to a still cool 10.1°C (50.2°F) from November's 12°C (53.6°F) in the average high-temperature. A minimal decline in temperature from daytime highs is anticipated in Trégrom throughout the December nights, averaging a frosty 7°C (44.6°F).Humidity
In December, the average relative humidity is 83%.Rainfall
In Trégrom, in December, during 21.2 rainfall days, 74mm (2.91") of precipitation is typically accumulated. Throughout the year, there are 214.5 rainfall days, and 643mm (25.31") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Trégrom, France, during December, snow falls for 0.9 days and regularly aggregates up to 9mm (0.35") of snow. In Trégrom, during the entire year, snow falls for 4.5 days and aggregates up to 38mm (1.5") of snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 08:45 and sunset at 17:20. On the last day of the month, sunrise is at 09:05 and sunset at 17:27 CET.
Sunshine
In December, the average sunshine is 3.5h.UV index
The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 3 during December leads to these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Trégrom?
What is the average humidity in December in Trégrom?
How much does it rain in Trégrom in December?
How many days does it snow in December in Trégrom?
What is the month with the shortest days in Trégrom?
How many hours of daylight does Trégrom have in December?
When are sunrise and sunset in December in Trégrom?
How long on average sun shines in December in Trégrom?
What is the UV index intensity in December in Trégrom?
Average temperature in December
Trégrom, France
- Average high temperature in December: 10.1°C
The warmest month (with the highest average high temperature) is August (19.1°C).
The month with the lowest average high temperature is January (9°C).
- Average low temperature in December: 7°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (5.4°C).
Average pressure in December
Trégrom, France
- Average pressure in December: 1017.2mbar
The month with the highest atmospheric pressure is September (1018.2mbar).
The month with the lowest atmospheric pressure is November (1011.9mbar).
Average wind speed in December
Trégrom, France
- Average wind speed in December: 25.3km/h
The windiest months (with the highest average wind speed) are February and December (25.3km/h).
The calmest month (with the lowest average wind speed) is July (16.3km/h).
Average humidity in December
Trégrom, France
- Average humidity in December: 83%
The month with the highest relative humidity is June (85%).
The months with the lowest relative humidity are February, March, April, September and October (82%).
Average rainfall in December
Trégrom, France
- Average rainfall in December: 74mm
The wettest month (with the highest rainfall) is November (82mm).
The driest month (with the least rainfall) is September (28mm).
Average rainfall days in December
Trégrom, France
- Average rainfall days in December: 21.2 days
The month with the highest number of rainy days is November (21.7 days).
The month with the least rainy days is September (13.7 days).
Average snowfall in December
Trégrom, France
- Average snowfall in December: 9mm
The month with the highest snowfall is January (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Trégrom, France
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (1.9 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
Trégrom, France
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in December
Trégrom, France
- Average sunshine days in December: 5.5 days
The month with the most sunshine days is September (11.1 days).
The month with the least sunshine days is November (4.8 days).
Average UV index in December
Trégrom, France
- Average UV index in December: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in December
Trégrom, France
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are April, July and September (Cloud cover 42).
Average visibility in December
Trégrom, France
- Average visibility in December: 9km
The months with the highest visibility are March, April, June, July and September (10km).
The months with the lowest visibility are January, February, May, August, October, November and December (9km).
Trégrom, France
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