January in Saint-Valérien stays gentler than in 80% of mainland French towns
In July the day’s top temperature is typically 26.1°C. Rain peaks in October and eases off in June. By rainfall alone, it ranks wetter than 62% of mainland French towns. Long walks are most pleasant from May to October, when afternoons reach 19–26°C.
Figures from Météo-France’s Sainte-Gemme-la-Plaine station, 17 km south-west.
A year in Saint-Valérien at a glance
Each month’s typical high and low in °C, at the Sainte-Gemme-la-Plaine station.
What a year in Saint-Valérien feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Sainte-Gemme-la-Plaine.
About 809 mm of rain a year
October is the wettest month and June the driest. About 25 days a year bring 10 mm or more. 49th wettest of 75 towns of 2,500+ in Vendée.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at La Roche-sur-Yon
30 frosts and 63 days of 25°C a year
On about 30 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 63 days a year reach 25°C, and 18 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Sainte-Gemme-la-Plaine: 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 Sainte-Gemme-la-Plaine
Sainte-Gemme-la-Plaine is 17 km south-west of Saint-Valérien. Every figure on this page is the station’s, not a measurement in Saint-Valérien itself.
| Station (Météo-France number) | Sainte-Gemme-la-Plaine (85216001) |
| Distance from the town | 17 km south-west |
| Station altitude | 3 m |
| Town altitude (its center) | 51 m |
| Period | 1991–2020 |
| Sunshine measured at | La Roche-sur-Yon, 39 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-Valérien 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-Valérien | Sainte-Gemme-la-Plaine | 26.1°C | 3.3°C | 809 mm |
| Saint-Jean-d'Hermine 9.8 km | same station | 26.1°C about the same | 3.3°C about the same | 809 mm |
| Fontenay-le-Comte 13 km | Marans | 26.3°C about the same | 3.4°C about the same | 740 mm |
| Chantonnay 18 km | La Roche-sur-Yon | 24.9°C 1.2°C cooler | 3.2°C about the same | 886 mm |
| Luçon 19 km | same station | 26.1°C about the same | 3.3°C about the same | 809 mm |
| Bournezeau 20 km | La Roche-sur-Yon | 24.9°C 1.2°C cooler | 3.2°C about the same | 886 mm |
| La Châtaigneraie 20 km | Secondigny | 25.8°C about the same | 2.1°C 1.2°C colder | 1,097 mm |
Saint-Valérien weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Sainte-Gemme-la-Plaine station; sunshine at La Roche-sur-Yon.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.6°C | 3.3°C | 6.4°C | 82 mm | 74 |
| February | 10.8°C | 2.9°C | 6.8°C | 61 mm | 106 |
| March | 14.1°C | 4.7°C | 9.4°C | 61 mm | 151 |
| April | 16.8°C | 6.4°C | 11.6°C | 61 mm | 184 |
| May | 20.5°C | 9.9°C | 15.2°C | 58 mm | 211 |
| June | 24.0°C | 12.7°C | 18.4°C | 41 mm | 229 |
| July | 26.1°C | 14.0°C | 20.1°C | 44 mm | 241 |
| August | 26.3°C | 13.9°C | 20.1°C | 47 mm | 236 |
| September | 23.3°C | 11.4°C | 17.3°C | 71 mm | 199 |
| October | 18.5°C | 9.4°C | 14.0°C | 95 mm | 129 |
| November | 13.4°C | 5.8°C | 9.6°C | 94 mm | 89 |
| December | 10.1°C | 3.5°C | 6.8°C | 94 mm | 74 |
| Year | 17.8°C | 8.2°C | 13.0°C | 809 mm | 1,922 |
Where Saint-Valérien’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Sainte-Gemme-la-Plaine, 17 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, La Roche-sur-Yon, 39 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-Valérien’s climate
How warm does Saint-Valérien get in summer?
August is the warmest month, with average highs of 26.3°C. About 63 days a year reach 25°C, more than 54% of mainland French towns, and about 18 reach 30°C.
How cold does Saint-Valérien get in winter?
February nights average 2.9°C. The air drops to 0°C or below on about 30 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Saint-Valérien get?
About 809 mm a year, more than 62% of mainland French towns. October is the wettest month (95 mm) and June the driest (41 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, La Roche-sur-Yon (39 km away), averages 1,922 hours of sunshine a year.
Are these figures for Saint-Valérien itself?
No: they are the normals of the Météo-France station matched to Saint-Valérien, Sainte-Gemme-la-Plaine, 17 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 SAINTE GEMME LA PLAINE_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Valérien →
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.