December weather forecastSioniac, France
December weather for Sioniac, France: In Sioniac, France, in December, snow falls for 1.6 days, with typically accumulated 9mm (0.35") of snow. The first month of the winter, December, is also a frosty month in Sioniac, France, with an average temperature varying between 1.6°C (34.9°F) and 7.8°C (46°F).
December
Weather in December
The first month of the winter, December, is also a frosty month in Sioniac, France, with an average temperature varying between 1.6°C (34.9°F) and 7.8°C (46°F).Temperature
December ushers in a minute temperature change, with average high-temperatures reducing from November's cool 10.8°C (51.4°F) to a frosty 7.8°C (46°F). In December, Sioniac experiences a temperature dip to an average of 1.6°C (34.9°F) at night.Humidity
The months with the highest humidity in Sioniac are November and December, with an average relative humidity of 88%.Rainfall
In December, the rain falls for 14.9 days. Throughout December, 74mm (2.91") of precipitation is accumulated. In Sioniac, during the entire year, the rain falls for 178.6 days and collects up to 712mm (28.03") of precipitation.Snowfall
Months with snowfall in Sioniac are January through March, May, October through December. In Sioniac, during December, snow falls for 1.6 days and regularly aggregates up to 9mm (0.35") of snow. In Sioniac, France, during the entire year, snow falls for 10.8 days and aggregates up to 87mm (3.43") 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 December, sunrise is at 08:11 and sunset at 17:12. On the last day of the month, sunrise is at 08:30 and sunset at 17:21 CET.
Sunshine
In December, the average sunshine in Sioniac is 4.3h.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 value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sioniac, France
- Average high temperature in December: 7.8°C
The warmest month (with the highest average high temperature) is August (25.7°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in December: 1.6°C
The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is February (-0.3°C).
Average pressure in December
Sioniac, France
- Average pressure in December: 1021.3mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is November (1015.4mbar).
Average wind speed in December
Sioniac, France
- Average wind speed in December: 8.9km/h
The windiest month (with the highest average wind speed) is February (9.8km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity in December
Sioniac, France
- Average humidity in December: 88%
The months with the highest relative humidity are November and December (88%).
The month with the lowest relative humidity is August (71%).
Average rainfall in December
Sioniac, France
- Average rainfall in December: 74mm
The wettest month (with the highest rainfall) is November (84mm).
The driest month (with the least rainfall) is July (35mm).
Average rainfall days in December
Sioniac, France
- Average rainfall days in December: 14.9 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is September (11.4 days).
Average snowfall in December
Sioniac, France
- Average snowfall in December: 9mm
The month with the highest snowfall is January (42mm).
The months with the least snowfall are April, June, July, August and September (0mm).
Average snowfall days in December
Sioniac, France
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is January (3.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sioniac, France
- Average daylight in December: 8h and 48min
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 18min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and November (Average sunshine: 4h and 12min).
Average sunshine days in December
Sioniac, France
- Average sunshine days in December: 14.1 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in December
Sioniac, 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
Sioniac, France
- Average cloud cover in December: 57
The month with the most cloud cover is November (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Sioniac, France
- Average visibility in December: 7km
The months with the highest visibility are March, April, May, June, July, August and September (8km).
The months with the lowest visibility are January, February, October, November and December (7km).
