Biarritz weather in July
July in Biarritz: warm, a little rain, with clean air — one of the best months to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Biarritz · #137 of 1413 destinations to visit in July · comfort 92/100 (tier S)
- Days
- 25°C
- Nights
- 18°C
- Wet days
- 9
- Sun
- 12.1 h
- Humidity
- 80%
- Daylight
- 15 h
Traveller notes on Biarritz in July
June to August is Biarritz's best weather and its high season together. July averages near 24°C, and the sea is warm enough that the forum says you can often surf in shorts by mid-month, with some days not needing a wetsuit at all — they put the water at 20–21°C, the record a little higher. The honest caveat is that the weather is temperamental: a couple of really nice days, then rain, then a couple more, with afternoon thunderstorms in the mix, against seven wet days on the record. The rocky coastline is the surf advantage here — the breaks vary with the wind, so something is usually working.
Other months in Biarritz
Forum posters describe January in Biarritz as similar to December, cold around 10-12C and potentially wet and windy, though posters note there's usually at least a day or two of notably milder weather within any given winter stretch. Posters are direct that winter here is actually the driest season overall, with long, dry, sunny spells a genuine feature of the Basque coast's mild oceanic climate, even as a visitor could just as easily get lucky with 15-17C days or unlucky with persistent driving rain off the Atlantic. Posters consistently describe Biarritz as very much a summer tourist town, but note the roughly 40,000 year-round residents and a university in nearby Bayonne keep plenty of restaurants and shops open through the quieter winter months. Posters generally rate January as cool, changeable but genuinely livable, with real chances of both pleasant and rough weather days.
Add your own note from Biarritz's card on the map.
Biarritz climate normals — July
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Biarritz in July
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdstravelers describe it as peak season, Lifeguarded beach season, Bastille Day (14 juillet)
Sourced from traveler notes: “June to August is Biarritz's best weather and its high season together. July averages near 24°C, and the sea is warm enou…” — Tripadvisor community
Peak crowdsBusyShoulder seasonQuiet
Best months for Biarritz's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Best weatherBiarritz's weather peaks July–September.
Best weatherFair weatherToughest weather
What's on in Biarritz in July
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Lifeguarded beach season
15 Jun – 15 Sep · usuallySummer season opensCrowdedThe Grande Plage and Cote des Basques are only flagged and patrolled through the summer, and the beach clubs open with them. Outside that the water is unsupervised and the rip off the Grande Plage is the local hazard. Source ↗
- Holiday
Bastille Day (14 juillet)
13–14 JulNational holidayCrowdedClosures14 July is the national holiday: towns hold fireworks on the evening of the 13th or 14th, often with a firemen's ball, a parade or a concert, and banks, offices and many shops close for the day. Source ↗
Nearby, and something's on
Within 300 km of Biarritz — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Biarritz?
Biarritz in July — FAQ
- Is July a good time to visit Biarritz?
- July in Biarritz: warm, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Biarritz on SeasonMap's comfort score (92/100).
- What is the weather like in Biarritz in July?
- In July, Biarritz averages a daily high of 24.9°C and a low of 18.1°C, with about 48.8 mm of rain over roughly 9.2 rainy days.
- What is the air quality in Biarritz in July?
- Biarritz has a mean US Air Quality Index of about 42 in July.
Within 300 km: Bordeaux's Bordeaux Fete le Vin around 7–11 Jul, and Santander's Banos de Ola around 1–15 Jul.