Les Sables-d'Olonne in Summer
In summer (June, July and August), Les Sables-d'Olonne sees average daytime highs around 21°C and overnight lows near 16°C, with 112 mm of rain over about 21 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 18°C in early June to 21°C by late August. The sky is clear or mostly clear about 40% of the time across summer, and the air most often feels comfortable.
Summer is Les Sables-d'Olonne's best season of the year to visit on our travel score. For the whole year in context, see Les Sables-d'Olonne's year-round climate.
- Avg daytime high
- 21°C
- warmest season of the year
- Avg overnight low
- 16°C
- Rainfall
- 112 mm
- 21 wet days
- Avg wind
- 17 km/h
- Travel score
- 7.0
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Les Sables-d'Olonne in Summer
Over the season highs climb from about 18°C in early June to 21°C by late August.
A typical summer day in Les Sables-d'Olonne reaches about 21°C and drops to 16°C overnight. The warmest of the three months is August, the coolest June.
Les Sables-d'Olonne 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 | 10° / 6° | 91 | 13.4 | 8.8 | 1.8 |
| Feb | 10° / 6° | 64 | 10.5 | 10 | 2.0 |
| Mar | 12° / 7° | 57 | 10.7 | 11.6 | 2.9 |
| Apr | 14° / 9° | 52 | 9.9 | 13.3 | 3.9 |
| May | 17° / 12° | 54 | 9.9 | 14.8 | 5.3 |
| Jun | 20° / 15° | 39 | 7.8 | 15.5 | 6.5 |
| Jul | 21° / 17° | 33 | 6.6 | 15.2 | 7.3 |
| Aug | 22° / 17° | 40 | 6.8 | 14 | 7.3 |
| Sep | 20° / 15° | 56 | 8.2 | 12.4 | 6.6 |
| Oct | 17° / 13° | 93 | 12.7 | 10.7 | 4.9 |
| Nov | 13° / 10° | 106 | 13.9 | 9.2 | 3.2 |
| Dec | 10° / 7° | 100 | 14.1 | 8.4 | 2.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 40% of the time across summer.
Chance of precipitation in Summer
Les Sables-d'Olonne gets around 112 mm of rain over 21 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 17 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 18 min in early June to 13 h 12 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 6.0 kWh/m².
Is summer a good time to visit Les Sables-d'Olonne?
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 one of the better times to visit Les Sables-d'Olonne for general sightseeing.
What to pack for Les Sables-d'Olonne in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Les Sables-d'Olonne sees daytime highs around 21°C and nights near 16°C. Pack sun protection. About 21 days see rain.
Sea temperature near Les Sables-d'Olonne in Summer
The nearest coast averages about 19°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 15 km away) is warmest in August at about 20°C and coldest in February near 10°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 11 | 10 | 10 | 12 | 15 | 17 | 19 | 20 | 19 | 17 | 15 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 11 | Bracing |
| Feb | 10 | Bracing |
| Mar | 10 | Bracing |
| Apr | 12 | Bracing |
| May | 15 | Bracing |
| Jun | 17 | Cool |
| Jul | 19 | Cool |
| Aug | 20 | Cool |
| Sep | 19 | Cool |
| Oct | 17 | Cool |
| Nov | 15 | Bracing |
| Dec | 12 | Bracing |
UV index in Les Sables-d'Olonne in Summer
Clear-sky midday UV across summer averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Les Sables-d'Olonne peaks around July 20 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 6 | 6 | 7 | 7 | 7 | 5 | 3 | 2 | 1 |
| Level | Low | Low | Moderate | High | High | High | Very high | Very high | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 6 | High |
| Jun | 7 | High |
| Jul | 7 | Very high |
| Aug | 7 | Very high |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Les Sables-d'Olonne?
Les Sables-d'Olonne sits at 46.5°N, 1.8°W, 7 m above sea level, in France. The nearest listed city is La Roche-sur-Yon, 33 km away.
Topography around Les Sables-d'Olonne
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Les Sables-d'Olonne.
Within 3 km, the terrain around Les Sables-d'Olonne has only modest variations in elevation — a maximum elevation change of 31 m around an average of 8 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 94 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.
The land around Les Sables-d'Olonne is covered by artificial surfaces (40%) and water (39%) within 3 km, water (57%) within 16 km, and water (43%), cropland (25%) and grassland (20%) 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 Les Sables-d'Olonne (46.4969°, -1.7847°, elevation 7 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.