Bayonne weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Good
Best time to visit: July – August
What is the weather like in Bayonne in August?
In August, Bayonne is warm: daytime highs average 24 °C, and nights cool down to about 18 °C. The sea averages 22.2 °C – refreshing for a swim. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 67 mm in total. All in all, August is a good month for a holiday in Bayonne.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 64 | 70 | 55 |
| Day | 23° | 24° | 22° |
| Night | 17° | 18° | 16° |
| Sea | 21° | 22° | 21° |
| Sun | 7 h | 7 h | 7 h |
| Rain days | 11 | 11 | 11 |
More details for August
- Daylight
- 14 h 2 min07:10 – 21:12
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 11 daysdew point 18 °C or moreAll months
- Wind
- 18 km/haverage daily peakAll months
- Cloud cover
- 53 %on averageAll months
- Hot days
- 2 days30 °C or moreAll months
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 35 %82 %
- Seaweight 25 %74 %
- Sunshineweight 20 %65 %
- Few rainy daysweight 20 %51 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Bayonne in August: quick answers
Is Bayonne hot in August?
Warm rather than hot: in August, daytime highs in Bayonne average 24 °C and nights cool to about 18 °C. On about 2 days the thermometer climbs to 30 °C or more.
Can you swim in Bayonne in August?
Yes. In August the sea averages 22.2 °C – refreshing for a swim.
Does it rain much in Bayonne in August?
Rain is frequent, with about 11 rainy days and 67 mm in total.
Bayonne month by month
The whole year in BayonneAll destinations: FranceWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences