Arcachon Weather in May
What's the weather like in Arcachon (Aquitaine) in May 2026?
The climate in Arcachon during May can be summarized as mild and a little damp.
May is in the spring in Arcachon and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 18.9°C 65.9°F |
|---|---|
| Nightly temperature | 10.2°C 50.3°F |
| Average temperature | 14.5°C 58.1°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 88 mm 3.5 ins |
| Rainy days | 17 days |
| Sea temperature | 15.4°C 59.7°F |
| Humidity | 76% |
| Windspeed | 13kph 8 mph |
On average May is the 4th driest month of the year in Arcachon with around 88mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May temperatures in Arcachon
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Arcachon in May 2025.
Other monthly averages
Arcachon weather stats
| Hottest month: | July | 24.3°C 75.7°F |
|---|---|---|
| Driest month: | July | 53mm 2.1ins |
| Sunniest month: | July | 8.8hrs |
| Coldest month: | January | 10.2°C 50.4°F |
| Wettest month: | November | 126mm 5ins |
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