December weather forecastLannilis, France
December
Weather in December
The first month of the winter, December, is also a fresh month in Lannilis, France, with an average temperature varying between 7.6°C (45.7°F) and 10.5°C (50.9°F).Temperature
The transition from November to December brings an average high-temperature of a still cool 10.5°C (50.9°F), barely different from November's 12.5°C (54.5°F). December introduces a small decrease to a nighttime average of 7.6°C (45.7°F).Humidity
January, June and December, with an average relative humidity of 83%, are the most humid months.Rainfall
In December, the rain falls for 19.5 days. Throughout December, 72mm (2.83") of precipitation is accumulated. In Lannilis, during the entire year, the rain falls for 191.7 days and collects up to 567mm (22.32") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Lannilis, in December, snow falls for 0.6 days, with typically accumulated 5mm (0.2") of snow. Throughout the year, there are 2.9 snowfall days, and 18mm (0.71") of snow is accumulated.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 08:49 and sunset at 17:25. On the last day of December, sunrise is at 09:10 and sunset at 17:32 CET.
Sunshine
With an average of 3.2h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 3 in December leads to these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lannilis, France
- Average high temperature in December: 10.5°C
The warmest month (with the highest average high temperature) is July (19.9°C).
The month with the lowest average high temperature is February (9.6°C).
- Average low temperature in December: 7.6°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is February (5.6°C).
Average pressure in December
Lannilis, France
- Average pressure in December: 1017.3mbar
The month with the highest atmospheric pressure is September (1018.3mbar).
The month with the lowest atmospheric pressure is November (1012mbar).
Average wind speed in December
Lannilis, France
- Average wind speed in December: 24.1km/h
The windiest month (with the highest average wind speed) is December (24.1km/h).
The calmest month (with the lowest average wind speed) is July (16km/h).
Average humidity in December
Lannilis, France
- Average humidity in December: 83%
The months with the highest relative humidity are January, June and December (83%).
The months with the lowest relative humidity are April and September (80%).
Average rainfall in December
Lannilis, France
- Average rainfall in December: 72mm
The wettest month (with the highest rainfall) is November (77mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days in December
Lannilis, France
- Average rainfall days in December: 19.5 days
The month with the highest number of rainy days is December (19.5 days).
The month with the least rainy days is September (12.5 days).
Average snowfall in December
Lannilis, France
- Average snowfall in December: 5mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Lannilis, France
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1 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
Lannilis, France
- Average daylight in December: 8h and 24min
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 12min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in December
Lannilis, France
- Average sunshine days in December: 7.8 days
The month with the most sunshine days is May (14.7 days).
The month with the least sunshine days is November (7.3 days).
Average UV index in December
Lannilis, France
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Lannilis, France
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is April (Cloud cover 43).
Average visibility in December
Lannilis, France
- Average visibility in December: 9km
The months with the highest visibility are March and April (10km).
The months with the lowest visibility are January, February, May, June, July, August, September, October, November and December (9km).
