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 days in December
- Average sea temperature 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 registers an average high-temperature of a fresh 11.4°C (52.5°F), slightly varied from November's 13.3°C (55.9°F). Guilvinec registers a gentle descent to an average nighttime low of 9°C (48.2°F) in December from its daytime highs.Humidity
June through August and December, with an average relative humidity of 81%, are the most humid months.Rainfall
In Guilvinec, France, in December, it is raining for 14.4 days, with typically 36mm (1.42") of accumulated precipitation. In Guilvinec, during the entire year, the rain falls for 144.1 days and collects up to 289mm (11.38") of precipitation.Snowfall
Months with snowfall in Guilvinec are January and December. December has the most snowfall days of the year in Guilvinec. Snow falls for 0.2 days.Sea temperature
In Guilvinec, in December, the average water temperature is 12.7°C (54.9°F).Note: Dipping in 12.7°C (54.9°F) at temperatures less than 10°C (50°F) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year in Guilvinec, France.On the first day of the month, sunrise is at 08:45 and sunset at 17:27. On the last day of December, sunrise is at 09:05 and sunset at 17:34 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.7h of sunshine.UV index
January through April, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Guilvinec. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A typical high UV index of 3 in December suggests the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Experience reduced UV exposure by about half when donning a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What are December temperatures in Guilvinec?
What are the most humid months in Guilvinec?
What is the average humidity in December in Guilvinec?
How much does it rain in Guilvinec in December?
What is the snowiest month in Guilvinec?
When does it start snowing in Guilvinec?
How cold is the water in December in Guilvinec?
What is the month with the shortest days in Guilvinec?
How many hours of daylight does Guilvinec have in December?
When are sunrise and sunset in December in Guilvinec?
What is the month with the least sunshine in Guilvinec?
How long on average sun shines in December in Guilvinec?
What is the month with the lowest UV index in Guilvinec?
How high is the UV index in December in Guilvinec?
Average temperature in December
Guilvinec, France
- Average high temperature in December: 11.4°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is February (9.8°C).
- Average low temperature in December: 9°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7.3°C).
Average pressure in December
Guilvinec, France
- Average pressure in December: 1018.1mbar
The month with the highest atmospheric pressure is September (1018.5mbar).
The month with the lowest atmospheric pressure is November (1012.6mbar).
Average wind speed in December
Guilvinec, France
- Average wind speed in December: 27.4km/h
The windiest month (with the highest average wind speed) is December (27.4km/h).
The calmest month (with the lowest average wind speed) is August (18km/h).
Average humidity in December
Guilvinec, France
- Average humidity in December: 81%
The months with the highest relative humidity are June, July, August and December (81%).
The months with the lowest relative humidity are February, March, April, September and November (79%).
Average rainfall in December
Guilvinec, France
- Average rainfall in December: 36mm
The wettest month (with the highest rainfall) is November (40mm).
The driest month (with the least rainfall) is September (13mm).
Average rainfall days in December
Guilvinec, France
- Average rainfall days in December: 14.4 days
The month with the highest number of rainy days is January (15.6 days).
The month with the least rainy days is September (7.8 days).
Average snowfall days in December
Guilvinec, France
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Guilvinec, France
- Average sea temperature in December: 12.7°C
The best month for swimming (with the highest average sea temperature) is August (17.3°C).
The coldest month (with the lowest average sea temperature) is March (10.3°C).
Average daylight in December /
Average sunshine in December
Guilvinec, 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: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 42min).
Average sunshine days in December
Guilvinec, France
- Average sunshine days in December: 12.1 days
The month with the most sunshine days is September (19.6 days).
The month with the least sunshine days is November (10.6 days).
Average UV index in December
Guilvinec, France
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 3).
Average cloud cover in December
Guilvinec, France
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 36).
Average visibility in December
Guilvinec, France
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Guilvinec, France
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