La Roche-sur-Yon in Summer
In summer (June, July and August), La Roche-sur-Yon sees average daytime highs around 24°C and overnight lows near 14°C, with 134 mm of rain over about 24 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 21°C in early June to 24°C by late August. The sky is clear or mostly clear about 29% of the time across summer, and the air most often feels dry.
Summer is La Roche-sur-Yon's best season of the year to visit on our travel score. For the whole year in context, see La Roche-sur-Yon's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 14°C
- Rainfall
- 134 mm
- 24 wet days
- Avg wind
- 13 km/h
- Travel score
- 7.2
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in La Roche-sur-Yon in Summer
Over the season highs climb from about 21°C in early June to 24°C by late August.
A typical summer day in La Roche-sur-Yon reaches about 24°C and drops to 14°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in La Roche-sur-Yon
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
La Roche-sur-Yon 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 | 9° / 4° | 76 | 11.3 | 8.8 | 1.8 |
| Feb | 10° / 3° | 58 | 9.6 | 10 | 2.2 |
| Mar | 13° / 5° | 55 | 10.3 | 11.6 | 3.6 |
| Apr | 16° / 7° | 57 | 10.7 | 13.3 | 4.6 |
| May | 19° / 10° | 62 | 10.9 | 14.8 | 5.8 |
| Jun | 22° / 13° | 47 | 9 | 15.6 | 6.7 |
| Jul | 24° / 15° | 41 | 7.5 | 15.3 | 7.4 |
| Aug | 25° / 15° | 46 | 7.5 | 14 | 7.4 |
| Sep | 22° / 12° | 53 | 7.7 | 12.4 | 6.9 |
| Oct | 17° / 10° | 78 | 12 | 10.6 | 5.2 |
| Nov | 13° / 6° | 79 | 12.1 | 9.2 | 3.2 |
| Dec | 10° / 4° | 84 | 12.2 | 8.4 | 2.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 29% of the time across summer.
Chance of precipitation in Summer
La Roche-sur-Yon gets around 134 mm of rain over 24 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 13 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 15 h 24 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 5.9 kWh/m².
Is summer a good time to visit La Roche-sur-Yon?
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 La Roche-sur-Yon for general sightseeing.
What to pack for La Roche-sur-Yon in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, La Roche-sur-Yon sees daytime highs around 24°C and nights near 14°C. Pack sun protection. Worth having: light clothes and rain gear. About 24 days see rain.
Sea temperature near La Roche-sur-Yon 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 33 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) | 10 | 10 | 10 | 12 | 15 | 17 | 19 | 20 | 18 | 17 | 14 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 10 | Bracing |
| Feb | 10 | Bracing |
| Mar | 10 | Bracing |
| Apr | 12 | Bracing |
| May | 15 | Bracing |
| Jun | 17 | Cool |
| Jul | 19 | Cool |
| Aug | 20 | Cool |
| Sep | 18 | Cool |
| Oct | 17 | Cool |
| Nov | 14 | Bracing |
| Dec | 12 | Bracing |
UV index in La Roche-sur-Yon 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 La Roche-sur-Yon peaks around July 24 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 | 5 | 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 | 5 | 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 La Roche-sur-Yon?
La Roche-sur-Yon sits at 46.7°N, 1.4°W, 73 m above sea level, in France. The nearest listed city is Les Sables-d'Olonne, 33 km away.
Topography around La Roche-sur-Yon
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of La Roche-sur-Yon.
Within 3 km, the terrain around La Roche-sur-Yon has only modest variations in elevation — a maximum elevation change of 51 m around an average of 63 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 135 m; within 80 km, significant variations in elevation — a maximum elevation change of 339 m.
The land around La Roche-sur-Yon is covered by artificial surfaces (46%) and trees (26%) within 3 km, cropland (40%), grassland (31%) and trees (22%) within 16 km, and cropland (32%), water (27%) and grassland (26%) 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 La Roche-sur-Yon (46.6697°, -1.4276°, elevation 73 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.