December weather forecastBrest, France

December

Weather in December

The first month of the winter, December, is also a frosty month in Brest, France, with an average temperature varying between 9.9°C (49.8°F) and 4.8°C (40.6°F).

Temperature

The onset of December brings an average high-temperature of a chilly 9.9°C (49.8°F), nearly matching the November temperature. Throughout the month of December, Brest reports a steady low-temperature average of 4.8°C (40.6°F).

Humidity

January, October and December, with an average relative humidity of 86%, are the most humid months in Brest.

Rainfall

December is the month with the most rainfall in Brest, France. Rain falls for 17.2 days and accumulates 148mm (5.83") of precipitation.

Snowfall

January through May, November and December are months with snowfall. In December, in Brest, France, snow falls for 1.2 days. Throughout the year, in Brest, there are 8.4 snowfall days.

Sea temperature

In Brest, France, in December, the average water temperature is 12.7°C (54.9°F).
Note: Beware when you're in 12.7°C (54.9°F) waters; 13°C (55.4°F) is chilling and anything below 10°C (50°F) could cause breathing hindrance and a sudden cold shock, given your physical condition.

Daylight

With an average of 8h and 24min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 08:48 and sunset at 17:25. On the last day of the month, sunrise is at 09:09 and sunset at 17:33 CET.

Sunshine

In Brest, the average sunshine in December is 2.1h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 1 in December transforms into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.

Updated: Feb 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Brest, in December, the average high-temperature is 9.9°C (49.8°F), and the average low-temperature is 4.8°C (40.6°F).

The months with the highest humidity in Brest, France, are January, October and December, with an average relative humidity of 86%.

In December, the average relative humidity in Brest is 86%.

The month with the most rainfall is December, when the rain falls for 17.2 days and typically aggregates up to 148mm (5.83") of precipitation.

In Brest, France, during December, the rain falls for 17.2 days and regularly aggregates up to 148mm (5.83") of precipitation.

In Brest, France, during December, snow falls for 1.2 days.

In Brest, in December, the average water temperature is 12.7°C (54.9°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

December has the shortest days of the year in Brest, France, with an average of 8h and 24min of daylight.

In December, the average day length in Brest is 8h and 24min.

On the first day of December in Brest, sunrise is at 08:48 and sunset at 17:25. On the last day of the month, sunrise is at 09:09 and sunset at 17:33 CET.

In December, the average sunshine duration in Brest, France, is 2.1h.

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Brest.

In December, the average daily maximum UV index in Brest, France, is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

12.2°C

9.9°C

9.3°C

Average low temperature

Average humidity

Average rainfall

Average rainfall days

16.9

17.2

17.7

Average snowfall days

0.5

1.2

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in December
Brest, France

Average high temperature in December: 9.9°C

The warmest month (with the highest average high temperature) is August (20.8°C).
The month with the lowest average high temperature is January (9.3°C).

Average low temperature in December: 4.8°C

The months with the highest average low temperature are July and August (13.2°C).
The coldest month (with the lowest average low temperature) is February (4.1°C).

Average humidity in December
Brest, France

Average humidity in December: 86%

The months with the highest relative humidity are January, October and December (86%).
The months with the lowest relative humidity are April and May (81%).

Average rainfall in December
Brest, France

Average rainfall in December: 147.8mm

The wettest month (with the highest rainfall) is December (147.8mm).
The driest month (with the least rainfall) is June (59.8mm).

Average rainfall days in December
Brest, France

Average rainfall days in December: 17.2 days

The month with the highest number of rainy days is January (17.7 days).
The month with the least rainy days is June (8.6 days).

Average snowfall days in December
Brest, France

Average snowfall days in December: 1.2 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in December
Brest, France

Average sea temperature in December: 12.7°C

The best month for swimming (with the highest average sea temperature) is August (16.9°C).
The coldest month (with the lowest average sea temperature) is March (10.2°C).

Average daylight in December /
Average sunshine in December
Brest, France

Average daylight in December: 8h and 24min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

Average sunshine in December: 2h and 6min

The month with the most sunshine is June (Average sunshine: 6h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).

Average UV index in December
Brest, France

Average UV index in December: 1

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, November and December (UV index 1).