- Rain mm/yr
- 1,350
Updated July 2026 · Sources cited: weather-and-climate.com, climatestotravel.com
Good to know
Good to Know
- Biarritz is one of France's wettest cities; expect frequent rainfall even in summer—packing a light rain jacket is essential year-round.
- August brings the warmest water (22°C (72°F)) for swimming, though summer crowds peak in July–August; September–October offer warmer water than spring and fewer tourists.
- Winter (November–February) is mild by northern standards (5–13°C (41–55°F)) but very wet and gloomy; January is the coldest and dampest month.
- Late spring (May) and early autumn (September–October) offer the sweet spot: pleasant temperatures (18–23°C (64–73°F)), manageable rainfall, and fewer crowds than peak summer.
Rainfall
- Annual Total Mm
- 1350
- General Pattern
- Very rainy year-round; November–December period is notably wet; June–August driest
Driest Month
- Month
- July
- Rainy Days
- 10
- Rainfall Mm
- 49
Wettest Month
- Month
- November
- Rainy Days
- 14.6
- Rainfall Mm
- 171
Snowfall
- Relevant
- Yes
- Annual Total Mm
- 9
- Notes
- Occasional snowfall, primarily January–March, averaging 1mm per event month
Best Months
Best Months
- May
- June
- July
- August
- September
- October
Peak Season
- Description
- Warmest weather, lowest rainfall, most crowded with tourists
Months
- July
- August
Temperature
Coldest Month
- Month
- January
- Max Celsius
- 10.8
- Min Celsius
- 6.8
- Max Fahrenheit
- 51
- Min Fahrenheit
- 44
- Notes
- Mild compared to northern Europe, but still cool
Warmest Month
- Month
- August
- Max Celsius
- 24.4
- Min Celsius
- 17
- Max Fahrenheit
- 76
- Min Fahrenheit
- 63
- Notes
- Comfortable for outdoor activities and swimming
General Range Celsius
- Low
- 6.8
- High
- 24.4
General Range Fahrenheit
- Low
- 44
- High
- 76
Worst Months
Worst Months
- November
- December
- January
- February
Off Peak Season
- Description
- Lowest tourist numbers, coldest and wettest conditions
Months
- January
- February
- November
Sea Temperature
- Swim Season
- July–September when water reaches 19–22°C (66–72°F)
Coldest Month
- Month
- February
- Celsius
- 11.6
- Fahrenheit
- 53
Warmest Month
- Month
- August
- Celsius
- 22.4
- Fahrenheit
- 72
AI-generated estimateData refreshed July 2026
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Biarritz
Data last updated July 2026 · Verify anything important.