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
The onset of December manifests an average high-temperature of a still cool 10°C (50°F), demonstrating a minor variation from the preceding month. In December, Riaillé experiences a temperature dip to an average of 4.9°C (40.8°F) at night.Humidity
January and December, with an average relative humidity of 86%, are the most humid months.Rainfall
The month with the most rainfall in Riaillé, France, is December, when the rain falls for 14.5 days and typically aggregates up to 66mm (2.6") of precipitation.Snowfall
March, May through October and December are months without snowfall in Riaillé.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year in Riaillé, France.On the first day of December, sunrise is at 08:32 and sunset at 17:16. On the last day of the month, sunrise is at 08:52 and sunset at 17:23 CET.
Sunshine
The average sunshine in December in Riaillé, France, is 4.7h.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 reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Riaillé?
What is the most humid month in Riaillé?
What is the average humidity in December in Riaillé?
What is the wettest month in Riaillé?
How much does it rain in Riaillé in December?
When it does not snow in Riaillé?
Does it snow in Riaillé in December?
What is the month with the shortest days in Riaillé?
How many hours of daylight does Riaillé have in December?
What time are sunrise and sunset in December in Riaillé?
How long on average sun shines in December in Riaillé?
When is the lowest UV index in Riaillé?
What is the UV index reading in December in Riaillé?
Average temperature in December
Riaillé, France
- Average high temperature in December: 10°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 (8.9°C).
- Average low temperature in December: 4.9°C
The months with the highest average low temperature are July and August (14°C).
The coldest month (with the lowest average low temperature) is February (2.9°C).
Average pressure in December
Riaillé, France
- Average pressure in December: 1019.2mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).
Average wind speed in December
Riaillé, France
- Average wind speed in December: 17.1km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in December
Riaillé, France
- Average humidity in December: 86%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in December
Riaillé, France
- Average rainfall in December: 66mm
The wettest month (with the highest rainfall) is December (66mm).
The driest month (with the least rainfall) is September (21mm).
Average rainfall days in December
Riaillé, France
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is January (16.3 days).
The month with the least rainy days is September (8.2 days).
Average snowfall in December
Riaillé, France
- Average snowfall in December: 0mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, May, June, July, August, September, October and December (0mm).
Average snowfall days in December
Riaillé, France
- Average snowfall days in December: 0.2 days
The months with the highest number of snowfall days are January and February (0.5 days).
The months with the least snowfall days are March, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Riaillé, France
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Riaillé, France
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is September (20.2 days).
The month with the least sunshine days is November (11.6 days).
Average UV index in December
Riaillé, 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
Riaillé, France
- Average cloud cover in December: 51
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in December
Riaillé, 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).
