Photo: Hyacinhe Lorette · Public domainSummer warmth: Val-Couesnon logs fewer 25-degree days than 92% of mainland French towns
The coldest hours of a January night bottom out at 3.4°C on average. From frosty January to warm July, readings climb 20°C. Winters are mild: January nights here are milder than in 83% of mainland French towns. Gritters and ice scrapers earn their keep on roughly 28 nights a year below 0°C.
Figures from Météo-France’s Pontorson station, 16 km north.
A year in Val-Couesnon at a glance
Each month’s typical high and low in °C, at the Pontorson station.
What a year in Val-Couesnon feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Pontorson.
About 821 mm of rain a year
December is the wettest month and June the driest. About 23 days a year bring 10 mm or more. 19th 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
28 frosts and 28 days of 25°C a year
On about 28 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 28 days a year reach 25°C, and 5 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Pontorson: 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 Pontorson
Pontorson is 16 km north of Val-Couesnon. Every figure on this page is the station’s, not a measurement in Val-Couesnon itself.
| Station (Météo-France number) | Pontorson (50410003) |
| Distance from the town | 16 km north |
| Station altitude | 33 m |
| Town altitude (its center) | 50 m |
| Period | 1997–2020 (the station’s own record) |
| Sunshine measured at | Rennes-Saint-Jacques, 46 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 Val-Couesnon 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 |
|---|---|---|---|---|
| Val-Couesnon | Pontorson | 23.1°C | 3.4°C | 821 mm |
| Maen Roch 10 km | Fougères | 23.3°C about the same | 3.2°C about the same | 939 mm |
| Pontorson 12 km | same station | 23.1°C about the same | 3.4°C about the same | 821 mm |
| Saint-James 12 km | same station | 23.1°C about the same | 3.4°C about the same | 821 mm |
| Sens-de-Bretagne 14 km | Fougères | 23.3°C about the same | 3.2°C about the same | 939 mm |
| Rives-du-Couesnon 20 km | Fougères | 23.3°C about the same | 3.2°C about the same | 939 mm |
| Combourg 20 km | Le Quiou | 24.7°C 1.6°C warmer | 3.0°C about the same | 757 mm |
Val-Couesnon weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Pontorson station; sunshine at Rennes-Saint-Jacques.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.9°C | 3.4°C | 6.1°C | 76 mm | 68 |
| February | 9.8°C | 3.2°C | 6.5°C | 58 mm | 93 |
| March | 12.5°C | 4.3°C | 8.4°C | 55 mm | 134 |
| April | 15.4°C | 5.7°C | 10.5°C | 60 mm | 174 |
| May | 18.3°C | 8.9°C | 13.6°C | 66 mm | 202 |
| June | 21.5°C | 11.7°C | 16.6°C | 55 mm | 213 |
| July | 23.1°C | 13.3°C | 18.2°C | 62 mm | 220 |
| August | 23.0°C | 13.4°C | 18.2°C | 65 mm | 207 |
| September | 21.2°C | 11.1°C | 16.2°C | 57 mm | 181 |
| October | 16.9°C | 9.3°C | 13.1°C | 87 mm | 117 |
| November | 12.4°C | 6.2°C | 9.3°C | 86 mm | 84 |
| December | 9.5°C | 3.9°C | 6.7°C | 95 mm | 69 |
| Year | 16.0°C | 7.9°C | 11.9°C | 821 mm | 1,762 |
Where Val-Couesnon’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Pontorson, 16 km away: statistics for 1991–2020 (the station’s own years, 1997–2020, 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, Rennes-Saint-Jacques, 46 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 Val-Couesnon’s climate
How warm does Val-Couesnon get in summer?
July is the warmest month, with average highs of 23.1°C. About 28 days a year reach 25°C, fewer than 92% of mainland French towns, and about 5 reach 30°C.
How cold does Val-Couesnon get in winter?
February nights average 3.2°C. The air drops to 0°C or below on about 28 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Val-Couesnon get?
About 821 mm a year, more than 65% of mainland French towns. December is the wettest month (95 mm) and June the driest (55 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Rennes-Saint-Jacques (46 km away), averages 1,762 hours of sunshine a year.
Are these figures for Val-Couesnon itself?
No: they are the normals of the Météo-France station matched to Val-Couesnon, Pontorson, 16 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 PONTORSON, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Val-Couesnon →
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.