Weather in December
Sea temperature
In Saint-Cast-le-Guildo, France, the average seawater temperature in December is 11.9°C (53.4°F).Note: Swimming in 11.9°C (53.4°F) is deemed hazardous. Exposure to temperatures below 10°C (50°F) leads to immediate severe cold shock and hyperventilation.
Daylight
With an average of 8h and 24min of daylight, December has the shortest days of the year in Saint-Cast-le-Guildo, France.On the first day of the month, sunrise is at 08:40 and sunset at 17:15. On the last day of December, in Saint-Cast-le-Guildo, sunrise is at 09:01 and sunset at 17:23 CET.
Frequently asked questions
What is the sea water temperature in December in Saint-Cast-le-Guildo?
In Saint-Cast-le-Guildo, the average seawater temperature in December is 11.9°C (53.4°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.
What is the month with the shortest days in Saint-Cast-le-Guildo?
December has the shortest days of the year in Saint-Cast-le-Guildo, France, with an average of 8h and 24min of daylight.
How many hours of daylight does Saint-Cast-le-Guildo have in December?
In Saint-Cast-le-Guildo, the average day length in December is 8h and 22min.
When is the sunrise / sunset in December in Saint-Cast-le-Guildo?
In December, on the first day of the month, sunrise is at 08:40 and sunset at 17:15. On the last day of the month, in Saint-Cast-le-Guildo, France, sunrise is at 09:01 and sunset at 17:23 CET.
Average sea temperature in December
Saint-Cast-le-Guildo, France
- Average sea temperature in December: 11.9°C
The best month for swimming (with the highest average sea temperature) is September (18.2°C).
The coldest month (with the lowest average sea temperature) is February (8.7°C).
Average daylight in December
Saint-Cast-le-Guildo, 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).
Saint-Cast-le-Guildo, France
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