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
December reveals a small adjustment in temperature, transitioning from an average high of a mild 13.5°C (56.3°F) in November to a cool 10.4°C (50.7°F). Throughout December, the nighttime temperature averages to a wintry 4.5°C (40.1°F).Humidity
In Roaillan, the average relative humidity in December is 85%.Rainfall
In Roaillan, in December, during 14.5 rainfall days, 54mm (2.13") of precipitation is typically accumulated. Throughout the year, in Roaillan, there are 175.6 rainfall days, and 565mm (22.24") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall. The month with the most snowfall in Roaillan is December, when snow falls for 0.9 days and typically aggregates up to 10mm (0.39") of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 08:17 and sunset at 17:22. On the last day of December, in Roaillan, sunrise is at 08:37 and sunset at 17:31 CET.
Sunshine
In December, the average sunshine is 5h.UV index
In Roaillan, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 3 in December suggests the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
What are December temperatures in Roaillan?
What is the average humidity in December in Roaillan?
How much does it rain in Roaillan in December?
When does it snow the most in Roaillan?
When does it start snowing in Roaillan?
What is the month with the shortest days in Roaillan?
What is the average length of the day in December in Roaillan?
What time are sunrise and sunset in December in Roaillan?
How long on average sun shines in December in Roaillan?
What is the UV index intensity in December in Roaillan?
Average temperature in December
Roaillan, France
- Average high temperature in December: 10.4°C
The warmest month (with the highest average high temperature) is August (28.6°C).
The month with the lowest average high temperature is January (9.2°C).
- Average low temperature in December: 4.5°C
The month with the highest average low temperature is July (15.6°C).
The coldest month (with the lowest average low temperature) is February (3.2°C).
Average pressure in December
Roaillan, France
- Average pressure in December: 1021.5mbar
The month with the highest atmospheric pressure is December (1021.5mbar).
The month with the lowest atmospheric pressure is November (1015.5mbar).
Average wind speed in December
Roaillan, France
- Average wind speed in December: 8.5km/h
The windiest month (with the highest average wind speed) is March (9.3km/h).
The calmest months (with the lowest average wind speed) are August and September (7.1km/h).
Average humidity in December
Roaillan, France
- Average humidity in December: 85%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (69%).
Average rainfall in December
Roaillan, France
- Average rainfall in December: 54mm
The wettest month (with the highest rainfall) is November (80mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days in December
Roaillan, France
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is September (10.8 days).
Average snowfall in December
Roaillan, France
- Average snowfall in December: 10mm
The month with the highest snowfall is December (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Roaillan, France
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Roaillan, France
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Roaillan, France
- Average sunshine days in December: 15.3 days
The months with the most sunshine days are August and October (17.1 days).
The months with the least sunshine days are April and May (11.5 days).
Average UV index in December
Roaillan, France
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are February and November (UV index 2).
Average cloud cover in December
Roaillan, France
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in December
Roaillan, France
- Average visibility in December: 8km
The months with the highest visibility are May, June, July, August and September (9km).
The month with the lowest visibility is January (7km).
Roaillan, France
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