December weather forecastRoscanvel, France
December
Weather in December
Sea temperature
In Roscanvel, France, in December, the average water temperature is 12.8°C (55°F).Note: It is life-risking to swim in 12.8°C (55°F). Briefly staying in 13°C (55.4°F) waters feels unsettling, and temperatures below 10°C (50°F) might result in cold shock and loss of breath control, hinging on personal endurance.
Daylight
The month with the shortest days in Roscanvel is December, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 08:48 and sunset at 17:26. On the last day of December, in Roscanvel, sunrise is at 09:09 and sunset at 17:33 CET.
Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In December, the average sea temperature in Roscanvel, France, is 12.8°C (55°F). Swimming in 12.8°C (55°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
With an average of 8h and 24min of daylight, December has the shortest days of the year in Roscanvel.
In December, the average day length in Roscanvel is 8h and 25min.
In December, on the first day of the month, sunrise is at 08:48 and sunset at 17:26. On the last day of the month, in Roscanvel, sunrise is at 09:09 and sunset at 17:33 CET.
Average sea temperature in December
Roscanvel, France
- Average sea temperature in December: 12.8°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 (10.3°C).
Average daylight in December
Roscanvel, 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).





