Biarritz 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 Biarritz in August?
In August, Biarritz 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 8 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 Biarritz.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 70 | 77 | 59 |
| Day | 24° | 24° | 23° |
| Night | 17° | 18° | 15° |
| Sea | 21° | 22° | 21° |
| Sun | 8 h | 8 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)
- Muggy days
- 10 daysdew point 18 °C or more
- Wind
- 18 km/haverage daily peak
- Cloud cover
- 53 %on average
- Hot days
- 3 days30 °C or more
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 35 %90 %
- Seaweight 25 %74 %
- Sunshineweight 20 %83 %
- 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
Biarritz in August: quick answers
Is Biarritz hot in August?
Warm rather than hot: in August, daytime highs in Biarritz average 24 °C and nights cool to about 18 °C. On about 3 days the thermometer climbs to 30 °C or more.
Can you swim in Biarritz in August?
Yes. In August the sea averages 22.2 °C – refreshing for a swim.
Does it rain much in Biarritz in August?
Rain is frequent, with about 11 rainy days and 67 mm in total.
Biarritz month by month
The whole year in BiarritzAll destinations: France
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)