Chein-Dessus is wetter than 86% of mainland French towns: 973 mm of rain a year
Deep winter brings January lows near 0.5°C. Its January nights bite harder than in 80% of mainland French towns. Seasons differ by 26°C, from the coldest nights to the warmest afternoons. Plan for rain on about 121 days a year, the days with 1 mm or more.
These are the figures of Météo-France’s Saint-Girons station, 18 km east.
A year in Chein-Dessus at a glance
Each month’s typical high and low in °C, at the Saint-Girons station.
What a year in Chein-Dessus feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Girons.
About 973 mm of rain a year
May is the wettest month and July the driest. About 31 days a year bring 10 mm or more. 2nd wettest of 96 towns of 2,500+ in Haute-Garonne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Girons
49 frosts and 67 days of 25°C a year
On about 49 nights a year the air drops to 0°C or below, and on about 1 days it stays below freezing all day. About 67 days a year reach 25°C, and 17 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Girons: 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-Girons
Saint-Girons is 18 km east of Chein-Dessus. Every figure on this page is the station’s, not a measurement in Chein-Dessus itself.
| Station (Météo-France number) | Saint-Girons (09289001) |
| Distance from the town | 18 km east |
| Station altitude | 414 m |
| Town altitude (its center) | 462 m |
| Period | 1991–2020 |
| Nearest station of any kind | 9.1 km |
| Sunshine measured at | the same station |
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 Chein-Dessus 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 Haute-Garonne.
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 |
|---|---|---|---|---|
| Chein-Dessus | Saint-Girons | 25.5°C | 0.5°C | 973 mm |
| Saint-Gaudens 18 km | Clarac | 26.0°C 0.5°C warmer | 0.1°C about the same | 805 mm |
| Saint-Girons 21 km | same station | 25.5°C about the same | 0.5°C about the same | 973 mm |
| Montréjeau 28 km | Clarac | 26.0°C 0.5°C warmer | 0.1°C about the same | 805 mm |
| Cazères 28 km | Cérizols | 26.4°C 0.9°C warmer | −0.3°C 0.8°C colder | 976 mm |
Chein-Dessus weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Girons station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 10.5°C | 0.5°C | 5.5°C | 82 mm | 116 |
| February | 11.5°C | 1.0°C | 6.3°C | 69 mm | 129 |
| March | 14.7°C | 3.3°C | 9.0°C | 74 mm | 169 |
| April | 16.7°C | 5.5°C | 11.1°C | 104 mm | 171 |
| May | 20.0°C | 9.1°C | 14.6°C | 107 mm | 183 |
| June | 23.4°C | 12.6°C | 18.0°C | 78 mm | 193 |
| July | 25.5°C | 14.6°C | 20.0°C | 59 mm | 211 |
| August | 26.1°C | 14.5°C | 20.3°C | 67 mm | 209 |
| September | 23.1°C | 11.2°C | 17.1°C | 73 mm | 193 |
| October | 19.3°C | 8.1°C | 13.7°C | 82 mm | 157 |
| November | 13.8°C | 3.6°C | 8.7°C | 99 mm | 119 |
| December | 11.2°C | 1.1°C | 6.2°C | 80 mm | 113 |
| Year | 18.0°C | 7.1°C | 12.5°C | 973 mm | 1,964 |
Where Chein-Dessus’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Girons, 18 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, Saint-Girons, 18 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 Haute-Garonne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Chein-Dessus’s climate
How warm does Chein-Dessus get in summer?
August is the warmest month, with average highs of 26.1°C. About 67 days a year reach 25°C, more than 57% of mainland French towns, and about 17 reach 30°C.
How cold does Chein-Dessus get in winter?
January nights average 0.5°C. The air drops to 0°C or below on about 49 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Chein-Dessus get?
About 973 mm a year, more than 86% of mainland French towns. May is the wettest month (107 mm) and July the driest (59 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Girons (18 km away), averages 1,964 hours of sunshine a year.
Are these figures for Chein-Dessus itself?
No: they are the normals of the Météo-France station matched to Chein-Dessus, Saint-Girons, 18 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 GIRONS, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Chein-Dessus →
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.