Midwinter lows in Challans stay above those of 92% of mainland French towns
Midsummer highs settle at about 24.1°C. Warm afternoons come less often than in 83% of mainland French towns. Temperatures cover 21°C across the year, low to high. Plan for rain on about 116 days a year, the days with 1 mm or more.
Figures from Météo-France’s Le Perrier station, 9.6 km west.
A year in Challans at a glance
Each month’s typical high and low in °C, at the Le Perrier station.
What a year in Challans 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 9.6 km west of Challans. Every figure on this page is the station’s, not a measurement in Challans itself.
| Station (Météo-France number) | Le Perrier (85172001) |
| Distance from the town | 9.6 km west |
| Station altitude | 2 m |
| Town altitude (its center) | 9 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 Challans 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 |
|---|---|---|---|---|
| Challans | Le Perrier | 24.1°C | 4.1°C | 762 mm |
| Soullans 4.9 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
| Sallertaine 5.3 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
| La Garnache 6.7 km | Saint-Meme-le-Tenu | 25.0°C 0.9°C warmer | 3.5°C 0.6°C colder | 866 mm |
| Saint-Christophe-du-Ligneron 9.3 km | Palluau | 25.9°C 1.8°C warmer | 3.1°C 1°C colder | 929 mm |
| Commequiers 9.3 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
| Saint-Gervais 12 km | same station | 24.1°C about the same | 4.1°C about the same | 762 mm |
Challans 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 Challans’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Le Perrier, 9.6 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 Challans’s climate
How warm does Challans 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 Challans 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 Challans 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 Challans itself?
No: they are the normals of the Météo-France station matched to Challans, Le Perrier, 9.6 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 Challans →
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.