Biarritz, France
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Biarritz

September beach and weather guide

Based on 5 years of historical ERA5 climate data

Photo by Andri Klopfenstein on Unsplash

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September beach conditions — historical average

Good
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24.2°C Temp
22.8°C Sea temp
6.4 Rain days
10.2h Sunshine hrs
75.9% Humidity
60%

Reliable conditions

3 of 5 years were good

Year by year — mid September

2024 Mixed 20.6°C · 8 rainy days · 9.8h sun
2023 Good 25.5°C · 8 rainy days · 9.8h sun
2022 Good 25.2°C · 3 rainy days · 11.3h sun
2021 Mixed 23.3°C · 9 rainy days · 9.6h sun
2020 Good 26.2°C · 4 rainy days · 10.4h sun

Other months in Biarritz

May June July August September

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Each trip type is scored on what matters most for it — snow days for skiing, sea temp for beach, sunshine for sightseeing.

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About Biarritz in September

Based on 5 years of ERA5 historical climate data, September in Biarritz has historically been good for a beach holiday. Average temperatures of 24.2°C with sea temperatures around 22.8°C and 6.4 rainy days on average.

3 of the last 5 years had good beach conditions during this period. This data uses ERA5 reanalysis records — real historical measurements, not generalised averages.

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