Chamousset has some of the coldest winter nights among mainland French towns
Peak summer warmth arrives in July, with afternoons near 27.7°C. Winter and summer sit 30°C apart. It is a wet place: more rain falls here than on 93% of mainland French towns. Homes need heating from November to March, the months averaging under 10°C.
These are the figures of Météo-France’s Saint-Pierre-de-Soucy station, 12 km south-west.
A year in Chamousset at a glance
Each month’s typical high and low in °C, at the Saint-Pierre-de-Soucy station.
What a year in Chamousset feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Pierre-de-Soucy.
About 1,122 mm of rain a year
December is the wettest month and February the driest. About 41 days a year bring 10 mm or more. 26th wettest of 37 towns of 2,500+ in Savoie.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Chambery-Aix
A frosty town: 79 frosts and 82 days of 25°C a year
On about 79 nights a year the air drops to 0°C or below, and on about 6 days it stays below freezing all day. About 82 days a year reach 25°C, and 28 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Pierre-de-Soucy: 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-Pierre-de-Soucy
Saint-Pierre-de-Soucy is 12 km south-west of Chamousset. Every figure on this page is the station’s, not a measurement in Chamousset itself.
| Station (Météo-France number) | Saint-Pierre-de-Soucy (73276001) |
| Distance from the town | 12 km south-west |
| Station altitude | 351 m |
| Town altitude (its center) | 309 m |
| Period | 1991–2015 (the station’s own record) |
| Nearest station of any kind | 11 km |
| Sunshine measured at | Chambery-Aix, 27 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 Chamousset 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 Savoie.
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 |
|---|---|---|---|---|
| Chamousset | Saint-Pierre-de-Soucy | 27.7°C | −1.8°C | 1,122 mm |
| Saint-Pierre-d'Albigny 3.6 km | same station | 27.7°C about the same | −1.8°C about the same | 1,122 mm |
| Valgelon-La Rochette 13 km | same station | 27.7°C about the same | −1.8°C about the same | 1,122 mm |
| Montmélian 13 km | same station | 27.7°C about the same | −1.8°C about the same | 1,122 mm |
| Gilly-sur-Isère 16 km | Gilly-sur-Isère | 27.5°C about the same | −2.8°C 1°C colder | 1,354 mm |
| Porte-de-Savoie 17 km | Challes-les-Eaux | 28.1°C about the same | −1.8°C about the same | 1,148 mm |
| Challes-les-Eaux 17 km | Challes-les-Eaux | 28.1°C about the same | −1.8°C about the same | 1,148 mm |
Chamousset weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Pierre-de-Soucy station; sunshine at Chambery-Aix.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 5.5°C | −1.8°C | 1.9°C | 98 mm | 77 |
| February | 7.9°C | −1.5°C | 3.2°C | 73 mm | 102 |
| March | 13.8°C | 2.1°C | 7.9°C | 85 mm | 158 |
| April | 17.6°C | 5.1°C | 11.3°C | 80 mm | 176 |
| May | 21.7°C | 9.4°C | 15.5°C | 98 mm | 202 |
| June | 25.5°C | 12.8°C | 19.2°C | 97 mm | 236 |
| July | 27.7°C | 14.6°C | 21.1°C | 95 mm | 262 |
| August | 27.2°C | 14.3°C | 20.7°C | 94 mm | 237 |
| September | 22.2°C | 10.9°C | 16.6°C | 89 mm | 181 |
| October | 16.9°C | 7.4°C | 12.2°C | 95 mm | 124 |
| November | 9.9°C | 2.3°C | 6.1°C | 107 mm | 75 |
| December | 5.5°C | −1.0°C | 2.3°C | 112 mm | 66 |
| Year | 16.8°C | 6.2°C | 11.5°C | 1,122 mm | 1,895 |
Where Chamousset’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Pierre-de-Soucy, 12 km away: statistics for 1991–2020 (the station’s own years, 1991–2015, 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, Chambery-Aix, 27 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 Savoie.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Chamousset’s climate
How warm does Chamousset get in summer?
July is the warmest month, with average highs of 27.7°C. About 82 days a year reach 25°C, more than 72% of mainland French towns, and about 28 reach 30°C.
How cold does Chamousset get in winter?
January nights average −1.8°C. The air drops to 0°C or below on about 79 nights a year, and about 6 days a year stay below freezing all day.
How much rain does Chamousset get?
About 1,122 mm a year, more than 93% of mainland French towns. December is the wettest month (112 mm) and February the driest (73 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Chambery-Aix (27 km away), averages 1,895 hours of sunshine a year.
Are these figures for Chamousset itself?
No: they are the normals of the Météo-France station matched to Chamousset, Saint-Pierre-de-Soucy, 12 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-PIERRE DE SOUCY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Chamousset →
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.