Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 10.7 °C | 12.6 °C | 14 days | Unfavourable season |
| February | 12.4 °C | 12 °C | 12 days | Possible, with trade-offs |
| March | 14.2 °C | 12.1 °C | 15 days | Possible, with trade-offs |
| April | 16.9 °C | 13.7 °C | 11 days | Possible, with trade-offs |
| May | 19.4 °C | 15.9 °C | 12 days | Pleasant — a good time to go |
| June | 22.9 °C | 19.5 °C | 12 days | Pleasant — a good time to go |
| July | 24.9 °C | 21.3 °C | 8 days | Ideal — one of the best times of year |
| August | 25.3 °C | 21.8 °C | 8 days | Ideal — one of the best times of year |
| September | 23.2 °C | 20.7 °C | 11 days | Pleasant — a good time to go |
| October | 19.7 °C | 18.4 °C | 12 days | Pleasant — a good time to go |
| November | 14.9 °C | 16 °C | 15 days | Possible, with trade-offs |
| December | 12.6 °C | 13.9 °C | 14 days | Possible, with trade-offs |
Before you go
Three things to check once you have picked your dates.
Entry
France is in the European Union. Entry rules depend on your nationality — check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 11 August 2026
Health
Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.
Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.
FAQ
Can you swim in Arcachon in May?
The sea averages 15.9°C in May — too cold for most swimmers.
How hot is Arcachon in May?
Expect 19.4°C in the afternoon and 12.5°C at night, averaged over the last 10 years.
Does it rain a lot in Arcachon in May?
Around 12 days with rain (≥ 1 mm) in the month — 39% of days.