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
December
Weather in December
Temperature
In December, Saint-Hélen experiences a minor shift in meteorological conditions with average high-temperatures marked at a chilly 9.7°C (49.5°F), closely mirroring the climate in November. Saint-Hélen notes a steady average temperature of 6.2°C (43.2°F) during the nights of December.Humidity
In Saint-Hélen, the average relative humidity in December is 83%.Rainfall
In December, the rain falls for 19.3 days. Throughout December, 67mm (2.64") of precipitation is accumulated. Throughout the year, there are 206.5 rainfall days, and 602mm (23.7") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. December is the month with the most snowfall. Snow falls for 1 days and accumulates 11mm (0.43") of snow.Daylight
The month with the shortest days in Saint-Hélen is December, with an average of 8h and 24min of daylight.On the first day of December, sunrise is at 08:38 and sunset at 17:15. On the last day of the month, sunrise is at 08:59 and sunset at 17:22 CET.
Sunshine
In December, the average sunshine is 4h.UV index
The average daily maximum UV index in December in Saint-Hélen is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 3 during December translates into the following directions:
Adopt protective measures - Suggestions to resist sunburn are offered. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Saint-Hélen?
What is the average humidity in December in Saint-Hélen?
How many days does it rain in December in Saint-Hélen?
What is the snowiest month in Saint-Hélen?
How much does it snow in Saint-Hélen in December?
What is the month with the shortest days in Saint-Hélen?
What is the average length of the day in December in Saint-Hélen?
What time are sunrise and sunset in December in Saint-Hélen?
How many hours of sunshine does Saint-Hélen have in December?
What is the UV index reading in December in Saint-Hélen?
Average temperature in December
Saint-Hélen, France
- Average high temperature in December: 9.7°C
The warmest month (with the highest average high temperature) is August (21.3°C).
The month with the lowest average high temperature is January (8.7°C).
- Average low temperature in December: 6.2°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (4.3°C).
Average pressure in December
Saint-Hélen, France
- Average pressure in December: 1017.8mbar
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-Hélen, France
- Average wind speed in December: 22.3km/h
The windiest month (with the highest average wind speed) is December (22.3km/h).
The calmest month (with the lowest average wind speed) is August (14.3km/h).
Average humidity in December
Saint-Hélen, France
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is September (78%).
Average rainfall in December
Saint-Hélen, France
- Average rainfall in December: 67mm
The wettest month (with the highest rainfall) is November (72mm).
The driest month (with the least rainfall) is September (28mm).
Average rainfall days in December
Saint-Hélen, France
- Average rainfall days in December: 19.3 days
The month with the highest number of rainy days is January (20.2 days).
The month with the least rainy days is September (14.3 days).
Average snowfall in December
Saint-Hélen, France
- Average snowfall in December: 11mm
The month with the highest snowfall is December (11mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Saint-Hélen, France
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is February (1.9 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-Hélen, France
- Average daylight in December: 8h and 2min
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 24min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Saint-Hélen, France
- Average sunshine days in December: 7.1 days
The month with the most sunshine days is September (12.5 days).
The months with the least sunshine days are January and November (6.6 days).
Average UV index in December
Saint-Hélen, France
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in December
Saint-Hélen, 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 39).
Average visibility in December
Saint-Hélen, France
- Average visibility in December: 9km
The month with the highest visibility is March (10km).
The months with the lowest visibility are January, February, April, May, June, July, August, September, October, November and December (9km).
