Summers, winters and rain in Chelles all run close to those of most mainland French towns
January nights average 2.2°C, July afternoons 25.6°C, and a year brings 716 mm of rain. Rain is spread evenly through the year: the wettest month, December, gets little more than the driest, April. By warm days alone, it ranks cooler than 65% of mainland French towns. Radiators earn their keep from November to March, the months that average under 10°C.
Figures from Météo-France’s Torcy station, 4.7 km south-east.
A year in Chelles at a glance
Each month’s typical high and low in °C, at the Torcy station.
What a year in Chelles feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Torcy.
About 716 mm of rain a year
December is the wettest month and April the driest. About 19 days a year bring 10 mm or more. 32nd wettest of 116 towns of 2,500+ in Seine-et-Marne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Le Bourget
39 frosts and 52 days of 25°C a year
On about 39 nights a year the air drops to 0°C or below, and on about 3 days it stays below freezing all day. About 52 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Torcy: 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 Torcy
Torcy is 4.7 km south-east of Chelles. Every figure on this page is the station’s, not a measurement in Chelles itself.
| Station (Météo-France number) | Torcy (77468001) |
| Distance from the town | 4.7 km south-east |
| Station altitude | 43 m |
| Town altitude (its center) | 50 m |
| Period | 1993–2020 (the station’s own record) |
| Sunshine measured at | Le Bourget, 15 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 Chelles 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 Seine-et-Marne.
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 |
|---|---|---|---|---|
| Chelles | Torcy | 25.6°C | 2.2°C | 716 mm |
| Brou-sur-Chantereine 2.4 km | same station | 25.6°C about the same | 2.2°C about the same | 716 mm |
| Gournay-sur-Marne 2.6 km | Neuilly-sur-M. | 26.2°C 0.6°C warmer | 2.1°C about the same | 721 mm |
| Montfermeil 2.8 km | Neuilly-sur-M. | 26.2°C 0.6°C warmer | 2.1°C about the same | 721 mm |
| Vaires-sur-Marne 3.3 km | same station | 25.6°C about the same | 2.2°C about the same | 716 mm |
| Champs-sur-Marne 3.4 km | same station | 25.6°C about the same | 2.2°C about the same | 716 mm |
| Courtry 3.5 km | same station | 25.6°C about the same | 2.2°C about the same | 716 mm |
Chelles weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Torcy station; sunshine at Le Bourget.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.4°C | 2.2°C | 4.8°C | 57 mm | 57 |
| February | 8.9°C | 2.3°C | 5.6°C | 53 mm | 74 |
| March | 12.6°C | 4.0°C | 8.3°C | 53 mm | 129 |
| April | 16.2°C | 6.1°C | 11.2°C | 50 mm | 171 |
| May | 19.7°C | 9.6°C | 14.6°C | 71 mm | 189 |
| June | 23.2°C | 12.7°C | 18.0°C | 58 mm | 203 |
| July | 25.6°C | 14.6°C | 20.1°C | 61 mm | 213 |
| August | 25.5°C | 14.2°C | 19.8°C | 66 mm | 206 |
| September | 21.5°C | 11.2°C | 16.3°C | 53 mm | 162 |
| October | 16.8°C | 8.8°C | 12.8°C | 61 mm | 111 |
| November | 11.1°C | 5.1°C | 8.1°C | 60 mm | 64 |
| December | 8.0°C | 2.9°C | 5.5°C | 75 mm | 54 |
| Year | 16.4°C | 7.8°C | 12.1°C | 716 mm | 1,634 |
Where Chelles’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Torcy, 4.7 km away: statistics for 1991–2020 (the station’s own years, 1993–2020, 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, Le Bourget, 15 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 Seine-et-Marne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Chelles’s climate
How warm does Chelles get in summer?
July is the warmest month, with average highs of 25.6°C. About 52 days a year reach 25°C, fewer than 65% of mainland French towns, and about 13 reach 30°C.
How cold does Chelles get in winter?
January nights average 2.2°C. The air drops to 0°C or below on about 39 nights a year, and about 3 days a year stay below freezing all day.
How much rain does Chelles get?
About 716 mm a year, less than 63% of mainland French towns. December is the wettest month (75 mm) and April the driest (50 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Le Bourget (15 km away), averages 1,634 hours of sunshine a year.
Are these figures for Chelles itself?
No: they are the normals of the Météo-France station matched to Chelles, Torcy, 4.7 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 TORCY, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Chelles →
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.