Monthly climate guide
Arcachon weather in August
With highs near 25°C (76°F) and lows around 18°C (65°F), August feels warm in Arcachon. Rainfall averages about 40 mm (fairly dry) and the sky is a mix of sun and cloud. Daytime highs are about the same as July and 2°C warmer than September.
What stands out in August
- It's one of the drier months, with about 50% less rain than Arcachon's average.
- It's one of the sunniest months here, with cloud cover around 54%.
- Seasonally, August counts as late summer in Arcachon.
- Arcachon is usually about 3°C cooler than Bordeaux, 50 km away, in August.
August is typically Arcachon's warmest month.It's usually the driest month of the year.
Avg high
25°C
76°F
Avg low
18°C
65°F
Rainfall
40 mm
fairly dry
Humidity
74%
relative
Sky
54%
cloud · a mix of sun and cloud
Arcachon weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 11°C / 52°F | 7°C / 45°F | 120 mm | 84% | 80% |
| February | 11°C / 52°F | 6°C / 44°F | 88 mm | 82% | 71% |
| March | 14°C / 56°F | 8°C / 46°F | 76 mm | 80% | 67% |
| April | 16°C / 61°F | 10°C / 50°F | 75 mm | 78% | 63% |
| May | 18°C / 65°F | 13°C / 55°F | 79 mm | 78% | 64% |
| June | 22°C / 71°F | 16°C / 61°F | 74 mm | 77% | 62% |
| July | 24°C / 75°F | 18°C / 65°F | 42 mm | 75% | 53% |
| August | 25°C / 76°F | 18°C / 65°F | 40 mm | 74% | 54% |
| September | 23°C / 73°F | 17°C / 62°F | 50 mm | 73% | 55% |
| October | 19°C / 67°F | 14°C / 57°F | 76 mm | 78% | 64% |
| November | 15°C / 59°F | 11°C / 51°F | 121 mm | 82% | 74% |
| December | 13°C / 55°F | 9°C / 47°F | 116 mm | 84% | 76% |
What to pack for August
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A small travel umbrella, just in case
Is August a good time to visit Arcachon?
Compare the months in the chart above to find your ideal window.
Best time to visit Arcachon →Other France cities in August
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Arcachon weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/france/arcachon/august
<a href="https://weathercompare.eu/weather/france/arcachon/august">Arcachon weather in August</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/france/arcachon" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Arcachon weather in August"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/france/arcachon/august">Arcachon weather in August</a> – WeatherCompare</p>
Arcachon in August: quick answers
Is August a good time to visit Arcachon?
Yes. August is one of the best months for Arcachon, with highs around 25°C and about 40 mm of rain.
How warm is Arcachon in August?
Average highs are about 25°C (76°F) and average lows about 18°C (65°F), based on 10 years of daily data.
Does it rain a lot in Arcachon in August?
Arcachon typically gets around 40 mm of rain in August — fairly dry. It's usually the driest month of the year.
Figures are long-term averages for the area around Arcachon (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.