December weather forecastGuissény, France
December
Weather in December
The first month of the winter, December, is still a cool month in Guissény, France, with an average temperature varying between 8.4°C (47.1°F) and 10.8°C (51.4°F).Temperature
In December, the average high-temperature registers at a still fresh 10.8°C (51.4°F), nearly identical to November's 12.6°C (54.7°F). The month of December in Guissény is marked by an average minimum temperature of 8.4°C (47.1°F), slightly cooler than its daytime counterpart.Humidity
The average relative humidity in December in Guissény is 81%.Rainfall
In Guissény, in December, it is raining for 18.7 days, with typically 66mm (2.6") of accumulated precipitation. Throughout the year, in Guissény, there are 188.2 rainfall days, and 560mm (22.05") of precipitation is accumulated.Snowfall
Months with snowfall in Guissény are January through March, November and December. In Guissény, during December, snow falls for 0.5 days and regularly aggregates up to 2mm (0.08") of snow. Throughout the year, there are 2.5 snowfall days, and 9mm (0.35") of snow is accumulated.Sea temperature
In Guissény, the average seawater temperature in December is 12.8°C (55°F).Note: Swimming at temperatures less than 10°C (50°F) in 12.8°C (55°F) is feasible with the right swimsuit; if not, expect cold shock and breathlessness. A quick swim at 13°C (55.4°F) without adequate warmth can be discomforting.
Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Guissény, France.On the first day of December, sunrise is at 08:49 and sunset at 17:24. On the last day of the month, sunrise is at 09:09 and sunset at 17:31 CET.
Sunshine
December has the least sunshine of the year, with an average of 3.3h of sunshine.UV index
The average daily maximum UV index in December in Guissény is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 3 in December translates into this advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Guissény, France
- Average high temperature in December: 10.8°C
The warmest months (with the highest average high temperature) are July and August (18.7°C).
The month with the lowest average high temperature is February (9.4°C).
- Average low temperature in December: 8.4°C
The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is February (6.4°C).
Average pressure in December
Guissény, France
- Average pressure in December: 1017.1mbar
The month with the highest atmospheric pressure is September (1018.2mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in December
Guissény, France
- Average wind speed in December: 27.6km/h
The windiest month (with the highest average wind speed) is December (27.6km/h).
The calmest month (with the lowest average wind speed) is July (17.8km/h).
Average humidity in December
Guissény, France
- Average humidity in December: 81%
The month with the highest relative humidity is June (84%).
The months with the lowest relative humidity are February, March and April (80%).
Average rainfall in December
Guissény, France
- Average rainfall in December: 66mm
The wettest month (with the highest rainfall) is November (77mm).
The driest month (with the least rainfall) is September (22mm).
Average rainfall days in December
Guissény, France
- Average rainfall days in December: 18.7 days
The month with the highest number of rainy days is January (20.5 days).
The month with the least rainy days is September (10.6 days).
Average snowfall in December
Guissény, France
- Average snowfall in December: 2mm
The month with the highest snowfall is February (3mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Guissény, France
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature in December
Guissény, France
- Average sea temperature in December: 12.8°C
The best month for swimming (with the highest average sea temperature) is August (16.7°C).
The coldest month (with the lowest average sea temperature) is March (9.9°C).
Average daylight in December /
Average sunshine in December
Guissény, France
- Average daylight in December: 8h and 24min
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 18min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in December
Guissény, France
- Average sunshine days in December: 8.8 days
The month with the most sunshine days is September (16.4 days).
The months with the least sunshine days are January and November (7.3 days).
Average UV index in December
Guissény, France
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Guissény, France
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 41).
Average visibility in December
Guissény, France
- Average visibility in December: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).
