Castres gets more days of 25 degrees or more than 84% of mainland French towns
Météo-France’s Dourgne station, 15 km south-west: July afternoons reach 28.3°C on a typical day and January nights drop to 2.5°C; 896 mm of rain falls in a year. It is a wet place: more rain falls here than on 77% of mainland French towns. Frost is rarer than in 72% of mainland French towns: about 32 nights a year drop below freezing.
A year in Castres at a glance
Each month’s typical high and low in °C, at the Dourgne station.
What a year in Castres feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Dourgne.
About 896 mm of rain a year
May is the wettest month and July the driest. About 27 days a year bring 10 mm or more. 2nd wettest of 27 towns of 2,500+ in Tarn.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Albi
32 frosts and 93 days of 25°C a year
On about 32 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 93 days a year reach 25°C, and 38 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Dourgne: 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 Dourgne
Dourgne is 15 km south-west of Castres. Every figure on this page is the station’s, not a measurement in Castres itself.
| Station (Météo-France number) | Dourgne (81081002) |
| Distance from the town | 15 km south-west |
| Station altitude | 234 m |
| Town altitude (its center) | 173 m |
| Period | 1991–2020 |
| Sunshine measured at | Albi, 36 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 Castres 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 Tarn.
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 |
|---|---|---|---|---|
| Castres | Dourgne | 28.3°C | 2.5°C | 896 mm |
| Saïx 6.6 km | same station | 28.3°C about the same | 2.5°C about the same | 896 mm |
| Labruguière 8.4 km | same station | 28.3°C about the same | 2.5°C about the same | 896 mm |
| Soual 12 km | same station | 28.3°C about the same | 2.5°C about the same | 896 mm |
| Aiguefonde 14 km | same station | 28.3°C about the same | 2.5°C about the same | 896 mm |
| Aussillon 15 km | same station | 28.3°C about the same | 2.5°C about the same | 896 mm |
| Pont-de-Larn 15 km | Rouairoux | 27.8°C 0.5°C cooler | 2.2°C about the same | 1,653 mm |
Castres weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Dourgne station; sunshine at Albi.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.7°C | 2.5°C | 6.1°C | 78 mm | 91 |
| February | 11.2°C | 2.5°C | 6.8°C | 58 mm | 120 |
| March | 14.9°C | 4.8°C | 9.9°C | 66 mm | 175 |
| April | 17.7°C | 7.0°C | 12.3°C | 96 mm | 188 |
| May | 21.7°C | 10.6°C | 16.2°C | 101 mm | 219 |
| June | 25.9°C | 14.0°C | 19.9°C | 77 mm | 247 |
| July | 28.3°C | 15.8°C | 22.1°C | 50 mm | 276 |
| August | 28.7°C | 15.7°C | 22.2°C | 56 mm | 263 |
| September | 24.6°C | 12.7°C | 18.6°C | 73 mm | 216 |
| October | 19.7°C | 10.1°C | 14.9°C | 81 mm | 156 |
| November | 13.5°C | 5.9°C | 9.7°C | 84 mm | 96 |
| December | 10.4°C | 3.2°C | 6.8°C | 77 mm | 88 |
| Year | 18.9°C | 8.7°C | 13.8°C | 896 mm | 2,134 |
Where Castres’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Dourgne, 15 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, Albi, 36 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 Tarn.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Castres’s climate
How warm does Castres get in summer?
August is the warmest month, with average highs of 28.7°C. About 93 days a year reach 25°C, more than 84% of mainland French towns, and about 38 reach 30°C.
How cold does Castres get in winter?
January nights average 2.5°C. The air drops to 0°C or below on about 32 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Castres get?
About 896 mm a year, more than 77% of mainland French towns. May is the wettest month (101 mm) and July the driest (50 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Albi (36 km away), averages 2,134 hours of sunshine a year.
Are these figures for Castres itself?
No: they are the normals of the Météo-France station matched to Castres, Dourgne, 15 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 DOURGNE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Castres →
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.