Weather in May
Sea temperature
In May, the average sea temperature in Saint-Cast-le-Guildo, France, is 12.6°C (54.7°F).Note: Swimming in 12.6°C (54.7°F) poses a severe threat. Even short exposure to 13°C (55.4°F) is chilling, and going below 10°C (50°F) can cause breathing irregularities and intense cold shock, based on one's stamina.
Daylight
The average length of the day in May is 15h and 16min.On the first day of the month, sunrise is at 06:47 and sunset at 21:24. On the last day of May, in Saint-Cast-le-Guildo, France, sunrise is at 06:11 and sunset at 22:02 CEST.
Frequently asked questions
What is the sea water temperature in May in Saint-Cast-le-Guildo?
In Saint-Cast-le-Guildo, France, the average seawater temperature in May is 12.6°C (54.7°F). Swimming in 12.6°C (54.7°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.
How many hours of daylight does Saint-Cast-le-Guildo have in May?
In Saint-Cast-le-Guildo, France, the average day length in May is 15h and 16min.
What time are sunrise and sunset in May in Saint-Cast-le-Guildo?
In May, on the first day of the month, sunrise is at 06:47 and sunset at 21:24. On the last day of the month, in Saint-Cast-le-Guildo, France, sunrise is at 06:11 and sunset at 22:02 CEST.
Average sea temperature in May
Saint-Cast-le-Guildo, France
- Average sea temperature in May: 12.6°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 May
Saint-Cast-le-Guildo, France
- Average daylight in May: 15h 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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