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
December is characterized by a mild reduction in the average high-temperature, from a chilly 7.5°C (45.5°F) in November to a wintry 4.1°C (39.4°F). Saint-Thomas-en-Royans encounters an average low-temperature of -1.5°C (29.3°F) during December nights.Humidity
The average relative humidity in December in Saint-Thomas-en-Royans is 85%.Rainfall
In Saint-Thomas-en-Royans, in December, during 8 rainfall days, 62mm (2.44") of precipitation is typically accumulated. Throughout the year, there are 133.2 rainfall days, and 581mm (22.87") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 11.4 days and accumulates 252mm (9.92") of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 07:57 and sunset at 16:58. On the last day of December, sunrise is at 08:17 and sunset at 17:06 CET.
Sunshine
In Saint-Thomas-en-Royans, the average sunshine in December is 4.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Always opt for UVA and UVB-resistant sunglasses on radiant days. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Saint-Thomas-en-Royans during December?
What is the average humidity in December in Saint-Thomas-en-Royans?
How many days does it rain in December in Saint-Thomas-en-Royans?
What is the snowiest month in Saint-Thomas-en-Royans?
How many days does it snow in December in Saint-Thomas-en-Royans?
What is the month with the shortest days in Saint-Thomas-en-Royans?
What is the average length of the day in December in Saint-Thomas-en-Royans?
When is the sunrise / sunset in December in Saint-Thomas-en-Royans?
How long on average sun shines in December in Saint-Thomas-en-Royans?
When is the lowest UV index in Saint-Thomas-en-Royans?
What is the UV index reading in December in Saint-Thomas-en-Royans?
Average temperature in December
Saint-Thomas-en-Royans, France
- Average high temperature in December: 4.1°C
The warmest month (with the highest average high temperature) is August (22.3°C).
The month with the lowest average high temperature is January (2.4°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is July (11.6°C).
The coldest month (with the lowest average low temperature) is February (-3.6°C).
Average pressure in December
Saint-Thomas-en-Royans, France
- Average pressure in December: 1020.7mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in December
Saint-Thomas-en-Royans, France
- Average wind speed in December: 10.4km/h
The windiest month (with the highest average wind speed) is February (11.1km/h).
The calmest month (with the lowest average wind speed) is September (8.2km/h).
Average humidity in December
Saint-Thomas-en-Royans, France
- Average humidity in December: 85%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Saint-Thomas-en-Royans, France
- Average rainfall in December: 62mm
The wettest months (with the highest rainfall) are June and November (65mm).
The driest month (with the least rainfall) is September (33mm).
Average rainfall days in December
Saint-Thomas-en-Royans, France
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in December
Saint-Thomas-en-Royans, France
- Average snowfall in December: 252mm
The month with the highest snowfall is December (252mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Saint-Thomas-en-Royans, France
- Average snowfall days in December: 11.4 days
The month with the highest number of snowfall days is January (14.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint-Thomas-en-Royans, France
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Saint-Thomas-en-Royans, France
- Average sunshine days in December: 15 days
The month with the most sunshine days is August (16.8 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
Saint-Thomas-en-Royans, France
- Average UV index in December: 2
The months with the highest UV index are June and July (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-Thomas-en-Royans, France
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Saint-Thomas-en-Royans, France
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (8km).
