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 Saint-Jouan-des-Guérets steps into December, the average high-temperature holds at a chilly 9.8°C (49.6°F), hinting at a minor fluctuation from the prior month. Throughout December, Saint-Jouan-des-Guérets observes a steady low-temperature average of 6.7°C (44.1°F), reflecting a minor dip from daytime highs.Humidity
The months with the highest humidity in Saint-Jouan-des-Guérets are January and December, with an average relative humidity of 83%.Rainfall
In Saint-Jouan-des-Guérets, in December, during 17.7 rainfall days, 58mm (2.28") of precipitation is typically accumulated. Throughout the year, there are 187.9 rainfall days, and 541mm (21.3") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Saint-Jouan-des-Guérets. The month with the most snowfall is December, when snow falls for 0.8 days and typically aggregates up to 9mm (0.35") of snow.Sea temperature
In Saint-Jouan-des-Guérets, in December, the average water temperature is 11.9°C (53.4°F).Note: Swimming in 11.9°C (53.4°F) poses a severe threat. Even short exposure to 13°C (55.4°F) is chilling, and going below 10°C (50°F) can cause breathing irregularities and intense cold shock, based on one's stamina.
Daylight
The month with the shortest days is December, with an average of 8h and 24min of daylight.On the first day of December in Saint-Jouan-des-Guérets, France, sunrise is at 08:39 and sunset at 17:14. On the last day of the month, sunrise is at 09:00 and sunset at 17:22 CET.
Sunshine
In December, the average sunshine is 4h.UV index
In Saint-Jouan-des-Guérets, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Put precautions into practice - Protective measures against sun-induced damage are advised. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the average December temperature in Saint-Jouan-des-Guérets?
What are the most humid months in Saint-Jouan-des-Guérets?
What is the average humidity in December in Saint-Jouan-des-Guérets?
How many days does it rain in December in Saint-Jouan-des-Guérets?
When does it snow the most in Saint-Jouan-des-Guérets?
How much does it snow in Saint-Jouan-des-Guérets in December?
What is the sea water temperature in December in Saint-Jouan-des-Guérets?
What is the month with the shortest days in Saint-Jouan-des-Guérets?
How many hours of daylight does Saint-Jouan-des-Guérets have in December?
What time are sunrise and sunset in December in Saint-Jouan-des-Guérets?
How many hours of sunshine does Saint-Jouan-des-Guérets have in December?
How high is the UV index in December in Saint-Jouan-des-Guérets?
Average temperature in December
Saint-Jouan-des-Guérets, France
- Average high temperature in December: 9.8°C
The warmest month (with the highest average high temperature) is August (20.7°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in December: 6.7°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is February (4.8°C).
Average pressure in December
Saint-Jouan-des-Guérets, France
- Average pressure in December: 1017.7mbar
The month with the highest atmospheric pressure is September (1018.2mbar).
The month with the lowest atmospheric pressure is November (1012.4mbar).
Average wind speed in December
Saint-Jouan-des-Guérets, France
- Average wind speed in December: 24km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is August (15.2km/h).
Average humidity in December
Saint-Jouan-des-Guérets, France
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is September (78%).
Average rainfall in December
Saint-Jouan-des-Guérets, France
- Average rainfall in December: 58mm
The wettest month (with the highest rainfall) is November (67mm).
The driest months (with the least rainfall) are July and September (26mm).
Average rainfall days in December
Saint-Jouan-des-Guérets, France
- Average rainfall days in December: 17.7 days
The month with the highest number of rainy days is November (18.5 days).
The month with the least rainy days is September (12.8 days).
Average snowfall in December
Saint-Jouan-des-Guérets, France
- Average snowfall in December: 9mm
The month with the highest snowfall is December (9mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Saint-Jouan-des-Guérets, France
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average sea temperature in December
Saint-Jouan-des-Guérets, France
- Average sea temperature in December: 11.9°C
The best month for swimming (with the highest average sea temperature) is September (18°C).
The coldest months (with the lowest average sea temperature) are February and March (8.8°C).
Average daylight in December /
Average sunshine in December
Saint-Jouan-des-Guérets, 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: 4h and 0min
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 54min).
Average sunshine days in December
Saint-Jouan-des-Guérets, France
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is January (8.6 days).
Average UV index in December
Saint-Jouan-des-Guérets, 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 and February (UV index 2).
Average cloud cover in December
Saint-Jouan-des-Guérets, France
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 38).
Average visibility in December
Saint-Jouan-des-Guérets, France
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, June, July, August, September, October and December (10km).
The months with the lowest visibility are January, May and November (9km).
Saint-Jouan-des-Guérets, France
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