Biarritz in Summer
In summer (June, July and August), Biarritz sees average daytime highs around 23°C and overnight lows near 17°C, with 205 mm of rain over about 31 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 20°C in early June to 24°C by late August. The sky is clear or mostly clear about 33% of the time across summer, and the air most often feels humid.
Summer is Biarritz's best season of the year to visit on our travel score. For the whole year in context, see Biarritz's year-round climate.
- Avg daytime high
- 23°C
- warmest season of the year
- Avg overnight low
- 17°C
- Rainfall
- 205 mm
- 31 wet days
- Avg wind
- 11 km/h
- Travel score
- 6.9
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Biarritz in Summer
Over the season highs climb from about 20°C in early June to 24°C by late August.
A typical summer day in Biarritz reaches about 23°C and drops to 17°C overnight. The warmest of the three months is August, the coolest June.
Biarritz weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 12° / 7° | 123 | 14.1 | 9.1 | 2.7 |
| Feb | 12° / 7° | 106 | 12.7 | 10.2 | 2.9 |
| Mar | 14° / 8° | 98 | 12.8 | 11.6 | 4.0 |
| Apr | 16° / 10° | 106 | 14.2 | 13.2 | 4.4 |
| May | 19° / 13° | 96 | 13.1 | 14.5 | 5.6 |
| Jun | 21° / 16° | 76 | 10.7 | 15.2 | 6.4 |
| Jul | 23° / 18° | 64 | 10.3 | 14.9 | 7.0 |
| Aug | 24° / 18° | 65 | 10.2 | 13.8 | 7.2 |
| Sep | 22° / 16° | 88 | 11.4 | 12.3 | 6.5 |
| Oct | 19° / 14° | 114 | 12.8 | 10.8 | 5.7 |
| Nov | 15° / 10° | 162 | 14.9 | 9.5 | 3.9 |
| Dec | 12° / 8° | 134 | 14.1 | 8.8 | 3.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 33% of the time across summer.
Chance of precipitation in Summer
Biarritz gets around 205 mm of rain over 31 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 hours in early June to 13 h 06 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.8 kWh/m².
Is summer a good time to visit Biarritz?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Biarritz for sightseeing.
What to pack for Biarritz in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Biarritz sees daytime highs around 23°C and nights near 17°C. Pack sun protection. Worth having: light clothes and rain gear. About 31 days see rain.
Sea temperature near Biarritz in Summer
The nearest coast averages about 21°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 17 km away) is warmest in August at about 22°C and coldest in February near 12°C.
It's comfortable for a long swim from Jul 1 to Sep 24 — about 2.8 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 13 | 12 | 12 | 14 | 16 | 19 | 21 | 22 | 21 | 18 | 16 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 13 | Bracing |
| Feb | 12 | Bracing |
| Mar | 12 | Bracing |
| Apr | 14 | Bracing |
| May | 16 | Cool |
| Jun | 19 | Cool |
| Jul | 21 | Refreshing |
| Aug | 22 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 18 | Cool |
| Nov | 16 | Cool |
| Dec | 14 | Bracing |
UV index in Biarritz in Summer
Clear-sky midday UV across summer averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Biarritz peaks around July 16 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 6 | 6 | 8 | 8 | 8 | 5 | 4 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 5 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Biarritz?
Biarritz sits at 43.5°N, 1.6°W, 39 m above sea level, in France. The nearest listed city is Anglet, 3.0 km away.
Topography around Biarritz
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Biarritz.
Within 3 km, the terrain around Biarritz has only modest variations in elevation — a maximum elevation change of 91 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 231 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,044 m.
The land around Biarritz is covered by water (43%) and artificial surfaces (30%) within 3 km, water (47%) and trees (30%) within 16 km, and trees (46%) and water (25%) within 80 km.
France travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 230 V · 50 Hz
- Prices
- ≈ 77% of US
- price level, 2025
- GDP per capita
- $48,986
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.3
- per 100k, 2023
- Road deaths
- 5.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 539
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Biarritz (43.4806°, -1.5568°, elevation 39 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.