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
Yffiniac's average high-temperature in December is a frosty 9.4°C (48.9°F), marking an insignificant difference from the 11.8°C (53.2°F) of November. Throughout December, Yffiniac observes a steady low-temperature average of 5.6°C (42.1°F), reflecting a minor dip from daytime highs.Humidity
The months with the highest humidity are January, November and December, with an average relative humidity of 85%.Rainfall
In Yffiniac, in December, during 16.1 rainfall days, 44mm (1.73") of precipitation is typically accumulated. Throughout the year, in Yffiniac, there are 175 rainfall days, and 425mm (16.73") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Yffiniac, in December, snow falls for 1 days, with typically accumulated 12mm (0.47") of snow. In Yffiniac, France, during the entire year, snow falls for 5.8 days and aggregates up to 35mm (1.38") of snow.Daylight
The month with the shortest days is December, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 08:41 and sunset at 17:17. On the last day of December, in Yffiniac, sunrise is at 09:02 and sunset at 17:25 CET.
Sunshine
In Yffiniac, the average sunshine in December is 3.8h.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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Yffiniac?
What are the most humid months in Yffiniac?
What is the average humidity in December in Yffiniac?
How many days does it rain in December in Yffiniac?
How much does it snow in Yffiniac in December?
What is the month with the shortest days in Yffiniac?
How many hours of daylight does Yffiniac have in December?
When are sunrise and sunset in December in Yffiniac?
How long on average sun shines in December in Yffiniac?
What are the months with the lowest UV index in Yffiniac?
What is the UV index reading in December in Yffiniac?
Average temperature in December
Yffiniac, France
- Average high temperature in December: 9.4°C
The warmest month (with the highest average high temperature) is August (20.6°C).
The month with the lowest average high temperature is January (8.5°C).
- Average low temperature in December: 5.6°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).
Average pressure in December
Yffiniac, France
- Average pressure in December: 1017.7mbar
The month with the highest atmospheric pressure is September (1018.3mbar).
The month with the lowest atmospheric pressure is November (1012.3mbar).
Average wind speed in December
Yffiniac, France
- Average wind speed in December: 21.2km/h
The windiest month (with the highest average wind speed) is February (21.3km/h).
The calmest month (with the lowest average wind speed) is August (13.8km/h).
Average humidity in December
Yffiniac, France
- Average humidity in December: 85%
The months with the highest relative humidity are January, November and December (85%).
The month with the lowest relative humidity is September (81%).
Average rainfall in December
Yffiniac, France
- Average rainfall in December: 44mm
The wettest month (with the highest rainfall) is November (50mm).
The driest month (with the least rainfall) is September (18mm).
Average rainfall days in December
Yffiniac, France
- Average rainfall days in December: 16.1 days
The month with the highest number of rainy days is November (17.4 days).
The month with the least rainy days is September (11 days).
Average snowfall in December
Yffiniac, France
- Average snowfall in December: 12mm
The month with the highest snowfall is February (13mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Yffiniac, France
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is February (2.3 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
Yffiniac, France
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Yffiniac, France
- Average sunshine days in December: 11.2 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is November (8.3 days).
Average UV index in December
Yffiniac, 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
Yffiniac, France
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 42).
Average visibility in December
Yffiniac, 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).
