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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the Media Grid UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows current conditions for Biarritz. This Basque coastal city sees average daily highs of 12°C in winter and 23°C in summer, with the wettest months from November to January. Rainfall drops sharply from June through August, making late spring and early autumn the most settled periods.
What is the weather in Biarritz by month?
Biarritz has a mild oceanic climate with moderate seasonal variation. The coolest months are December, January and February, when average maximums hover near 12°C and night-time lows fall to around 5°C. Rainfall is highest in December (∼140 mm) and lowest in July (∼60 mm). From May to September, daily highs climb from 17°C to 23°C. Biarritz weather year round stays relatively humid, with occasional Atlantic storms in winter.
When is the best time to visit Biarritz?
The most comfortable period for visiting is May to June and September. Biarritz weather in May averages 18°C with moderate rain; June is warmer at 21°C and significantly drier. These months avoid peak crowds while offering favourable conditions for walking on the coast. Biarritz weather in February remains cool and wet, so is less suited to beach activity. For a reliable 10‑day outlook, consult the live forecast above; longer-range trends can be tracked via our 10 Day Weather Forecast UK page.
What is the weather in Biarritz in February?
February sees average highs near 12°C and lows around 5°C. Rainfall is still high (∼110 mm) with around 14 wet days. It is one of the cloudiest months, so pack waterproofs and warm layers.
How does Biarritz weather in June compare to May?
June is consistently warmer (average high 21°C vs 18°C) and drier (∼75 mm vs ∼95 mm). Sunshine hours increase from about 175 to 200 hours, making June the better choice for outdoor plans.
Is the 14‑day forecast for Biarritz reliable?
14‑day forecasts for Biarritz have moderate accuracy for general trends (warmer/cooler spells) but become less reliable after day 10. For trip planning, check the live forecast above for the first week and use our UK weather hub for regional context.