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 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 dawn of December sees an average high-temperature of a cool 11.4°C (52.5°F), subtly contrasting with November's 13.3°C (55.9°F). The temperature in Tréguennec during December experiences a small drop from daytime peaks, recording an average of 9°C (48.2°F) at night.Humidity
The months with the highest humidity in Tréguennec are June through August and December, with an average relative humidity of 81%.Rainfall
In Tréguennec, in December, during 14.4 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, in Tréguennec, there are 144.1 rainfall days, and 289mm (11.38") of precipitation is accumulated.Snowfall
Months with snowfall are January and December. December has the most snowfall days of the year. Snow falls for 0.2 days.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 08:46 and sunset at 17:26. On the last day of December, in Tréguennec, sunrise is at 09:06 and sunset at 17:34 CET.
Sunshine
With an average of 3.7h of sunshine, December has the least sunshine of the year in Tréguennec.UV index
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 3 during December translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Tréguennec?
What is the most humid month in Tréguennec?
What is the average humidity in December in Tréguennec?
How much does it rain in Tréguennec in December?
What is the snowiest month in Tréguennec?
When does it start to snow in Tréguennec?
What is the month with the shortest days in Tréguennec?
What is the average length of the day in December in Tréguennec?
When are sunrise and sunset in December in Tréguennec?
What is the month with the least sunshine in Tréguennec?
How long on average sun shines in December in Tréguennec?
What is the month with the lowest UV index in Tréguennec?
What is the UV index intensity in December in Tréguennec?
Average temperature in December
Tréguennec, France
- Average high temperature in December: 11.4°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is February (9.8°C).
- Average low temperature in December: 9°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7.3°C).
Average pressure in December
Tréguennec, France
- Average pressure in December: 1018.1mbar
The month with the highest atmospheric pressure is September (1018.5mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).
Average wind speed in December
Tréguennec, France
- Average wind speed in December: 27.4km/h
The windiest month (with the highest average wind speed) is December (27.4km/h).
The calmest month (with the lowest average wind speed) is August (18km/h).
Average humidity in December
Tréguennec, France
- Average humidity in December: 81%
The months with the highest relative humidity are June, July, August and December (81%).
The months with the lowest relative humidity are February, March, April, September and November (79%).
Average rainfall in December
Tréguennec, France
- Average rainfall in December: 36mm
The wettest month (with the highest rainfall) is November (40mm).
The driest month (with the least rainfall) is September (13mm).
Average rainfall days in December
Tréguennec, France
- Average rainfall days in December: 14.4 days
The month with the highest number of rainy days is January (15.6 days).
The month with the least rainy days is September (7.8 days).
Average snowfall days in December
Tréguennec, France
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Tréguennec, France
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in December
Tréguennec, France
- Average sunshine days in December: 12.1 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is November (10.6 days).
Average UV index in December
Tréguennec, France
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in December
Tréguennec, France
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 36).
Average visibility in December
Tréguennec, France
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
