La Vallée has milder winter nights than 92% of mainland French towns
Midsummer highs settle at about 25.5°C. By July afternoons alone, it runs cooler than 64% of mainland French towns. From frosty January to warm July, readings climb 22°C. For walks and days out, the stretch from May to October brings highs of 19–26°C.
These are the figures of Météo-France’s Saint-Agnant station, 11 km west.
A year in La Vallée at a glance
Each month’s typical high and low in °C, at the Saint-Agnant station.
What a year in La Vallée feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Agnant.
About 778 mm of rain a year
November is the wettest month and July the driest. About 23 days a year bring 10 mm or more. 31st wettest of 54 towns of 2,500+ in Charente-Maritime.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at La Rochelle-Île de Re
23 frosts and 56 days of 25°C a year
On about 23 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 56 days a year reach 25°C, and 15 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Agnant: 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 Saint-Agnant
Saint-Agnant is 11 km west of La Vallée. Every figure on this page is the station’s, not a measurement in La Vallée itself.
| Station (Météo-France number) | Saint-Agnant (17308001) |
| Distance from the town | 11 km west |
| Station altitude | 18 m |
| Town altitude (its center) | 5 m |
| Period | 1992–2020 (the station’s own record) |
| Nearest station of any kind | 3.6 km |
| Sunshine measured at | La Rochelle-Île de Re, 42 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 La Vallée 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 Charente-Maritime.
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 |
|---|---|---|---|---|
| La Vallée | Saint-Agnant | 25.5°C | 4.0°C | 778 mm |
| Tonnay-Charente 7.6 km | same station | 25.5°C about the same | 4.0°C about the same | 778 mm |
| Échillais 8.6 km | same station | 25.5°C about the same | 4.0°C about the same | 778 mm |
| Saint-Agnant 8.8 km | same station | 25.5°C about the same | 4.0°C about the same | 778 mm |
| Rochefort 11 km | same station | 25.5°C about the same | 4.0°C about the same | 778 mm |
| Soubise 13 km | same station | 25.5°C about the same | 4.0°C about the same | 778 mm |
| Saint-Georges-des-Coteaux 17 km | Saintes | 26.4°C 0.9°C warmer | 3.5°C 0.5°C colder | 907 mm |
La Vallée weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Agnant station; sunshine at La Rochelle-Île de Re.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.9°C | 4.0°C | 6.9°C | 77 mm | 91 |
| February | 11.0°C | 3.7°C | 7.4°C | 57 mm | 131 |
| March | 14.0°C | 5.4°C | 9.7°C | 58 mm | 179 |
| April | 16.7°C | 7.4°C | 12.1°C | 65 mm | 231 |
| May | 20.2°C | 10.9°C | 15.6°C | 58 mm | 258 |
| June | 23.6°C | 14.1°C | 18.8°C | 47 mm | 253 |
| July | 25.5°C | 15.7°C | 20.6°C | 37 mm | 297 |
| August | 25.6°C | 15.5°C | 20.6°C | 44 mm | 278 |
| September | 23.1°C | 12.8°C | 17.9°C | 62 mm | 234 |
| October | 18.7°C | 10.5°C | 14.6°C | 83 mm | 155 |
| November | 13.5°C | 6.8°C | 10.1°C | 98 mm | 109 |
| December | 10.4°C | 4.3°C | 7.4°C | 93 mm | 90 |
| Year | 17.7°C | 9.3°C | 13.5°C | 778 mm | 2,303 |
Where La Vallée’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Agnant, 11 km away: statistics for 1991–2020 (the station’s own years, 1992–2020, where its record is shorter).
- 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 Rochelle-Île de Re, 42 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 Charente-Maritime.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about La Vallée’s climate
How warm does La Vallée get in summer?
August is the warmest month, with average highs of 25.6°C. About 56 days a year reach 25°C, fewer than 61% of mainland French towns, and about 15 reach 30°C.
How cold does La Vallée get in winter?
February nights average 3.7°C. The air drops to 0°C or below on about 23 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does La Vallée get?
About 778 mm a year, more than 55% of mainland French towns. November is the wettest month (98 mm) and July the driest (37 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, La Rochelle-Île de Re (42 km away), averages 2,303 hours of sunshine a year.
Are these figures for La Vallée itself?
No: they are the normals of the Météo-France station matched to La Vallée, Saint-Agnant, 11 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 ST AGNANT, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for La Vallée →
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.