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 sea temperature 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
As November turns into December, the average high-temperatures rest at a still cool 10.5°C (50.9°F), showing a minor variation from the prior month. A modest decline from daytime high temperatures in Vannes is noticed in December, marking the average low at a frosty 7.3°C (45.1°F).Humidity
January and December, with an average relative humidity of 83%, are the most humid months in Vannes.Rainfall
In Vannes, in December, it is raining for 16.1 days, with typically 76mm (2.99") of accumulated precipitation. Throughout the year, in Vannes, there are 169.8 rainfall days, and 593mm (23.35") of precipitation is accumulated.Snowfall
Months with snowfall are February, April and December. The months with the most snowfall in Vannes are February, April and December, with an average 1mm (0.04") of accumulated snow.Sea temperature
In December, the average sea temperature is 12°C (53.6°F).Note: You can swim in 12°C (53.6°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 13°C (55.4°F) without it is tough.
Daylight
The month with the shortest days is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 08:39 and sunset at 17:21. On the last day of December, in Vannes, France, sunrise is at 08:59 and sunset at 17:29 CET.
Sunshine
In December, the average sunshine in Vannes is 4.6h.UV index
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Vannes. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What are December temperatures in Vannes?
What is the most humid month in Vannes?
What is the average humidity in December in Vannes?
How much does it rain in Vannes in December?
When does it snow the most in Vannes?
When does it start to snow in Vannes?
What is the water temperature in December in Vannes?
What is the month with the shortest days in Vannes?
What is the average length of the day in December in Vannes?
When is the sunrise / sunset in December in Vannes?
How many hours of sunshine does Vannes have in December?
What is the month with the lowest UV index in Vannes?
What is the UV index reading in December in Vannes?
Average temperature in December
Vannes, France
- Average high temperature in December: 10.5°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in December: 7.3°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is February (5.3°C).
Average pressure in December
Vannes, France
- Average pressure in December: 1018.6mbar
The month with the highest atmospheric pressure is December (1018.6mbar).
The month with the lowest atmospheric pressure is November (1013mbar).
Average wind speed in December
Vannes, France
- Average wind speed in December: 22.9km/h
The windiest month (with the highest average wind speed) is December (22.9km/h).
The calmest month (with the lowest average wind speed) is August (15.5km/h).
Average humidity in December
Vannes, France
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are August and September (78%).
Average rainfall in December
Vannes, France
- Average rainfall in December: 76mm
The wettest month (with the highest rainfall) is November (81mm).
The driest month (with the least rainfall) is September (24mm).
Average rainfall days in December
Vannes, France
- Average rainfall days in December: 16.1 days
The month with the highest number of rainy days is January (17.7 days).
The month with the least rainy days is September (10 days).
Average snowfall in December
Vannes, France
- Average snowfall in December: 1mm
The months with the highest snowfall are February, April and December (1mm).
The months with the least snowfall are January, March, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Vannes, France
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Vannes, France
- Average sea temperature in December: 12°C
The best months for swimming (with the highest average sea temperature) are July and August (18°C).
The coldest months (with the lowest average sea temperature) are February and March (10°C).
Average daylight in December /
Average sunshine in December
Vannes, France
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Vannes, France
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in December
Vannes, France
- Average UV index in December: 3
The months with the highest UV index are June, July and August (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
Vannes, France
- Average cloud cover in December: 52
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in December
Vannes, France
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
Vannes, France
Weather forecast for your location
2. Allow the app to use your location
