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
As November makes way for December, Saint-Arnoult-en-Yvelines's average high-temperature eases from a cool 10.4°C (50.7°F) to a chilly 7.1°C (44.8°F). Throughout December, Saint-Arnoult-en-Yvelines records a steady low-temperature average of 2.7°C (36.9°F), a minor decrease from its daytime counterpart.Humidity
January and December, with an average relative humidity of 86%, are the most humid months.Rainfall
In Saint-Arnoult-en-Yvelines, during December, the rain falls for 14.1 days and regularly aggregates up to 31mm (1.22") of precipitation. In Saint-Arnoult-en-Yvelines, France, during the entire year, the rain falls for 156.9 days and collects up to 321mm (12.64") of precipitation.Snowfall
January through March, November and December are months with snowfall in Saint-Arnoult-en-Yvelines. The months with the most snowfall in Saint-Arnoult-en-Yvelines are January, March and December, with an average 18mm (0.71") of accumulated snow.Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Saint-Arnoult-en-Yvelines.On the first day of December, sunrise is at 08:23 and sunset at 16:59. On the last day of the month, sunrise is at 08:44 and sunset at 17:06 CET.
Sunshine
In December, the average sunshine in Saint-Arnoult-en-Yvelines is 4h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. 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. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Saint-Arnoult-en-Yvelines in December?
What are the most humid months in Saint-Arnoult-en-Yvelines?
What is the average humidity in December in Saint-Arnoult-en-Yvelines?
How much does it rain in Saint-Arnoult-en-Yvelines in December?
When does it snow the most in Saint-Arnoult-en-Yvelines?
How many days does it snow in December in Saint-Arnoult-en-Yvelines?
What is the month with the shortest days in Saint-Arnoult-en-Yvelines?
What is the average length of the day in December in Saint-Arnoult-en-Yvelines?
What time are sunrise and sunset in December in Saint-Arnoult-en-Yvelines?
How long on average sun shines in December in Saint-Arnoult-en-Yvelines?
What is the month with the lowest UV index in Saint-Arnoult-en-Yvelines?
What is the UV index intensity in December in Saint-Arnoult-en-Yvelines?
Average temperature in December
Saint-Arnoult-en-Yvelines, France
- Average high temperature in December: 7.1°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in December: 2.7°C
The months with the highest average low temperature are July and August (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (1.6°C).
Average pressure in December
Saint-Arnoult-en-Yvelines, France
- Average pressure in December: 1018.3mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).
Average wind speed in December
Saint-Arnoult-en-Yvelines, France
- Average wind speed in December: 15.6km/h
The windiest month (with the highest average wind speed) is February (16km/h).
The calmest month (with the lowest average wind speed) is August (10.3km/h).
Average humidity in December
Saint-Arnoult-en-Yvelines, France
- Average humidity in December: 86%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in December
Saint-Arnoult-en-Yvelines, France
- Average rainfall in December: 31mm
The wettest month (with the highest rainfall) is June (40mm).
The driest month (with the least rainfall) is April (17mm).
Average rainfall days in December
Saint-Arnoult-en-Yvelines, France
- Average rainfall days in December: 14.1 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (10.1 days).
Average snowfall in December
Saint-Arnoult-en-Yvelines, France
- Average snowfall in December: 18mm
The months with the highest snowfall are January, March and December (18mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Saint-Arnoult-en-Yvelines, France
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is February (3.3 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
Saint-Arnoult-en-Yvelines, 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 months with the most sunshine are July and August (Average sunshine: 9h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Saint-Arnoult-en-Yvelines, France
- Average sunshine days in December: 12.7 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index in December
Saint-Arnoult-en-Yvelines, France
- Average UV index in December: 2
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, November and December (UV index 2).
Average cloud cover in December
Saint-Arnoult-en-Yvelines, France
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in December
Saint-Arnoult-en-Yvelines, France
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Saint-Arnoult-en-Yvelines, France
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