Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Séné, France

Sea temperature

In May, the average sea temperature in Séné, France, is 14.2°C (57.6°F).
Note: Swimming in 14.2°C (57.6°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.


In May, the average length of the day is 15.2h.

How cold is the water in May in Séné?

In May, the average sea temperature in Séné is 14.2°C (57.6°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.

How many hours of daylight does Séné have in May?

The average length of the day in May in Séné is 15.2h.
Average sea temperature in May - Séné, France
  • Average sea temperature in May: 14.2°C

The best month for swimming (with the highest average sea temperature) is August (18.3°C).
The coldest month (with the lowest average sea temperature) is February (9.5°C).

Average daylight in May - Séné, France
  • Average daylight in May: 15.2h

The month with the longest days is June (Average daylight: 15.9h).
The month with shortest days is December (Average daylight: 8.5h).