La Roche-sur-Yon in Fall
In fall (September, October and November), La Roche-sur-Yon sees average daytime highs around 17°C and overnight lows near 10°C, with 210 mm of rain over about 32 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 23°C in early September to 11°C by late November. The sky is clear or mostly clear about 23% of the time across fall, and the air most often feels dry.
Fall is La Roche-sur-Yon's 2nd-best season to visit on our travel score. For the whole year in context, see La Roche-sur-Yon's year-round climate.
- Avg daytime high
- 17°C
- 2nd-warmest season
- Avg overnight low
- 10°C
- Rainfall
- 210 mm
- 32 wet days
- Avg wind
- 14 km/h
- Travel score
- 5.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in La Roche-sur-Yon in Fall
Over the season highs ease from about 23°C in early September to 11°C by late November.
A typical fall day in La Roche-sur-Yon reaches about 17°C and drops to 10°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in La Roche-sur-Yon
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall 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 fall months (September, October and November) 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 Fall
The sky is clear or mostly clear about 23% of the time across fall.
Chance of precipitation in Fall
La Roche-sur-Yon gets around 210 mm of rain over 32 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 14 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 12 min in early September to 8 h 42 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 2.7 kWh/m².
Is fall a good time to visit La Roche-sur-Yon?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit La Roche-sur-Yon for sightseeing.
What to pack for La Roche-sur-Yon in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, La Roche-sur-Yon sees daytime highs around 17°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 32 days see rain.
Sea temperature near La Roche-sur-Yon in Fall
The nearest coast averages about 16°C across fall — 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 Fall
Clear-sky midday UV across fall averages around 3 — 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.