Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 11.3 °C | 12.7 °C | 15 days | Unfavourable season |
| February | 13.2 °C | 12.5 °C | 13 days | Possible, with trade-offs |
| March | 14.8 °C | 12.8 °C | 17 days | Possible, with trade-offs |
| April | 17 °C | 14.1 °C | 13 days | Possible, with trade-offs |
| May | 19.2 °C | 16.4 °C | 14 days | Possible, with trade-offs |
| June | 22.3 °C | 20 °C | 13 days | Pleasant — a good time to go |
| July | 24.1 °C | 22.1 °C | 9 days | Ideal — one of the best times of year |
| August | 24.9 °C | 22.7 °C | 10 days | Ideal — one of the best times of year |
| September | 22.9 °C | 21.5 °C | 13 days | Pleasant — a good time to go |
| October | 20.3 °C | 18.7 °C | 12 days | Pleasant — a good time to go |
| November | 15.5 °C | 16.2 °C | 15 days | Possible, with trade-offs |
| December | 13.4 °C | 14.2 °C | 13 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 Biarritz in August?
The sea averages 22.7°C in August — swimming is possible but brisk.
How hot is Biarritz in August?
Expect 24.9°C in the afternoon and 17.7°C at night, averaged over the last 10 years.
Does it rain a lot in Biarritz in August?
Around 10 days with rain (≥ 1 mm) in the month — 33% of days.