January in Saint-Gervais stays gentler than in 92% of mainland French towns
On a normal July day the thermometer tops out near 24.1°C. Only about 38 days a year reach 25°C, fewer than in 83% of mainland French towns. Of all months, November brings the most rain and July the least. The outdoor season runs from May to October, with highs of 18–24°C.
Figures from Météo-France’s Le Perrier station, 9.2 km south.
A year in Saint-Gervais at a glance
Each month’s typical high and low in °C, at the Le Perrier station.
What a year in Saint-Gervais feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Le Perrier.
About 762 mm of rain a year
November is the wettest month and July the driest. About 23 days a year bring 10 mm or more. 68th wettest of 75 towns of 2,500+ in Vendée.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Nantes-Bouguenais
26 frosts and 38 days of 25°C a year
On about 26 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 38 days a year reach 25°C, and 8 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Le Perrier: a frost is a night of 0°C or below, a summer day (jour d’été) 25°C or more, a hot day (forte chaleur) 30°C or more.
The Météo-France station at Le Perrier
Le Perrier is 9.2 km south of Saint-Gervais. Every figure on this page is the station’s, not a measurement in Saint-Gervais itself.
| Station (Météo-France number) | Le Perrier (85172001) |
| Distance from the town | 9.2 km south |
| Station altitude | 2 m |
| Town altitude (its center) | 26 m |
| Period | 1991–2020 |
| Sunshine measured at | Nantes-Bouguenais, 40 km away |
TownRatings matches each commune to one station with at least 24 years of temperature and rain records: the nearest, counting every 100 m of height difference as 10 km, never across the sea.
How Saint-Gervais compares
Against the 4,385 towns of 2,500 or more in mainland France, each read from its own matched station. The dots are the other towns of 2,500+ in Vendée.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km. Where a neighbor uses the same station its figures are the same: the differences you’d feel over a few kilometers aren’t in the normals.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Saint-Gervais | Le Perrier | 24.1°C | 4.1°C | 762 mm |
| Beauvoir-sur-Mer 4 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
| Sallertaine 6.5 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
| Challans 12 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
| La Garnache 12 km | Saint-Meme-le-Tenu | 25.0°C 0.9°C warmer | 3.5°C 0.6°C colder | 866 mm |
| Soullans 14 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
| Saint-Jean-de-Monts 14 km | Saint-Jean de Mont | 24.9°C 0.8°C warmer | 4.1°C about the same | 783 mm |
Saint-Gervais weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Le Perrier station; sunshine at Nantes-Bouguenais.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.8°C | 4.1°C | 6.9°C | 80 mm | 73 |
| February | 10.5°C | 3.6°C | 7.1°C | 62 mm | 102 |
| March | 13.2°C | 5.4°C | 9.3°C | 51 mm | 147 |
| April | 15.7°C | 7.0°C | 11.4°C | 56 mm | 183 |
| May | 19.1°C | 10.1°C | 14.6°C | 52 mm | 203 |
| June | 22.3°C | 12.9°C | 17.6°C | 43 mm | 213 |
| July | 24.1°C | 14.4°C | 19.3°C | 37 mm | 229 |
| August | 24.4°C | 14.1°C | 19.3°C | 44 mm | 233 |
| September | 21.9°C | 11.7°C | 16.8°C | 63 mm | 199 |
| October | 17.7°C | 9.8°C | 13.8°C | 92 mm | 123 |
| November | 13.4°C | 6.5°C | 9.9°C | 92 mm | 91 |
| December | 10.5°C | 4.4°C | 7.5°C | 89 mm | 78 |
| Year | 16.9°C | 8.7°C | 12.8°C | 762 mm | 1,873 |
Where Saint-Gervais’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Le Perrier, 9.2 km away: statistics for 1991–2020.
- Which station: among stations with at least 24 of the 30 years of temperature and rain, the nearest to the commune’s population-weighted center, counting each 100 m of height difference as 10 km; mainland towns use mainland stations and each overseas département its own.
- Altitudes: the town’s from IGN’s RGE ALTI® at its population-weighted center; the station’s from Météo-France.
- Sunshine: the nearest station with at least 10 years of sunshine records, Nantes-Bouguenais, 40 km away.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Vendée.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Gervais’s climate
How warm does Saint-Gervais get in summer?
August is the warmest month, with average highs of 24.4°C. About 38 days a year reach 25°C, fewer than 83% of mainland French towns, and about 8 reach 30°C.
How cold does Saint-Gervais get in winter?
February nights average 3.6°C. The air drops to 0°C or below on about 26 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Saint-Gervais get?
About 762 mm a year, more than 52% of mainland French towns. November is the wettest month (92 mm) and July the driest (37 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Nantes-Bouguenais (40 km away), averages 1,873 hours of sunshine a year.
Are these figures for Saint-Gervais itself?
No: they are the normals of the Météo-France station matched to Saint-Gervais, Le Perrier, 9.2 km away. France publishes its climate normals by station, not by commune; a valley, a hill or the sea can make a difference over a few kilometers.
Where do these figures come from?
Météo-France’s fiches climatologiques: 30-year averages (1991–2020) for each of its long-running stations, published as open data since 2024. They are normals, not a forecast.
Source: Météo-France, fiches climatologiques, 1991–2020 statistics (station LE PERRIER, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Gervais →
Contains public sector information under the Licence Ouverte / Open Licence 2.0 (Etalab): INSEE, DGFiP, the Interior Ministry’s statistics service (SSMSI), the Ministry of Education (DEPP), the Health Ministry’s statistics service (DREES) and the Housing Ministry (Carte des loyers). Commune boundaries: IGN Admin Express.