The temperatures in Biarritz in August are comfortable with low of 17°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Biarritz during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Biarritz in August 2025.
If you’re planning to visit Biarritz in the near future, we highly recommend that you review the 14 day weather forecast for Biarritz before you arrive.
Temperatures
24° / 17°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
99
mm
Sun Hours
10.5
Hrs
