Saint-Thurial has milder winter nights than 80% of mainland French towns
On a normal July day the thermometer tops out near 24.8°C. December is the wettest month, August the driest. Warm afternoons come less often than in 77% of mainland French towns. Keep the boiler serviced for the months from November to March, which average under 10°C.
Figures from Météo-France’s Rennes-Saint-Jacques station, 15 km east.
A year in Saint-Thurial at a glance
Each month’s typical high and low in °C, at the Rennes-Saint-Jacques station.
What a year in Saint-Thurial feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Rennes-Saint-Jacques.
About 691 mm of rain a year
December is the wettest month and August the driest. About 19 days a year bring 10 mm or more. 50th wettest of 99 towns of 2,500+ in Ille-et-Vilaine.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Rennes-Saint-Jacques
30 frosts and 44 days of 25°C a year
On about 30 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 44 days a year reach 25°C, and 9 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Rennes-Saint-Jacques: 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 Rennes-Saint-Jacques
Rennes-Saint-Jacques is 15 km east of Saint-Thurial. Every figure on this page is the station’s, not a measurement in Saint-Thurial itself.
| Station (Météo-France number) | Rennes-Saint-Jacques (35281001) |
| Distance from the town | 15 km east |
| Station altitude | 36 m |
| Town altitude (its center) | 52 m |
| Period | 1991–2020 |
| 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 Saint-Thurial 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 Ille-et-Vilaine.
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 |
|---|---|---|---|---|
| Saint-Thurial | Rennes-Saint-Jacques | 24.8°C | 3.3°C | 691 mm |
| Bréal-sous-Montfort 5.3 km | same station | 24.8°C about the same | 3.3°C about the same | 691 mm |
| Goven 7.3 km | same station | 24.8°C about the same | 3.3°C about the same | 691 mm |
| Talensac 7.8 km | same station | 24.8°C about the same | 3.3°C about the same | 691 mm |
| Mordelles 8.1 km | same station | 24.8°C about the same | 3.3°C about the same | 691 mm |
| Cintré 9.2 km | same station | 24.8°C about the same | 3.3°C about the same | 691 mm |
| Chavagne 11 km | same station | 24.8°C about the same | 3.3°C about the same | 691 mm |
Saint-Thurial weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Rennes-Saint-Jacques station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.2°C | 3.3°C | 6.2°C | 67 mm | 68 |
| February | 10.2°C | 2.9°C | 6.6°C | 52 mm | 93 |
| March | 13.2°C | 4.5°C | 8.8°C | 49 mm | 134 |
| April | 16.0°C | 6.0°C | 11.0°C | 51 mm | 174 |
| May | 19.3°C | 9.3°C | 14.3°C | 58 mm | 202 |
| June | 22.6°C | 12.1°C | 17.3°C | 51 mm | 213 |
| July | 24.8°C | 13.7°C | 19.2°C | 44 mm | 220 |
| August | 24.7°C | 13.8°C | 19.3°C | 44 mm | 207 |
| September | 21.9°C | 11.4°C | 16.6°C | 57 mm | 181 |
| October | 17.2°C | 9.3°C | 13.2°C | 73 mm | 117 |
| November | 12.5°C | 5.9°C | 9.2°C | 73 mm | 84 |
| December | 9.6°C | 3.6°C | 6.6°C | 73 mm | 69 |
| Year | 16.8°C | 8.0°C | 12.4°C | 691 mm | 1,762 |
Where Saint-Thurial’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Rennes-Saint-Jacques, 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, Rennes-Saint-Jacques, 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 Ille-et-Vilaine.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Thurial’s climate
How warm does Saint-Thurial get in summer?
July is the warmest month, with average highs of 24.8°C. About 44 days a year reach 25°C, fewer than 77% of mainland French towns, and about 9 reach 30°C.
How cold does Saint-Thurial get in winter?
February nights average 2.9°C. The air drops to 0°C or below on about 30 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Saint-Thurial get?
About 691 mm a year, less than 73% of mainland French towns. December is the wettest month (73 mm) and August the driest (44 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Rennes-Saint-Jacques (15 km away), averages 1,762 hours of sunshine a year.
Are these figures for Saint-Thurial itself?
No: they are the normals of the Météo-France station matched to Saint-Thurial, Rennes-Saint-Jacques, 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 RENNES-ST JACQUES, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Thurial →
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.