Rimou gets fewer days of 25 degrees or more than 92% of mainland French towns
January mornings start at about 3.4°C. Winters are mild: January nights here are milder than in 83% of mainland French towns. Wet weather is most frequent in December and least in June. An umbrella earns its place on about 135 days a year with 1 mm of rain or more.
These are the figures of Météo-France’s Pontorson station, 21 km north.
A year in Rimou at a glance
Each month’s typical high and low in °C, at the Pontorson station.
What a year in Rimou 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 21 km north of Rimou. Every figure on this page is the station’s, not a measurement in Rimou itself.
| Station (Météo-France number) | Pontorson (50410003) |
| Distance from the town | 21 km north |
| Station altitude | 33 m |
| Town altitude (its center) | 23 m |
| Period | 1997–2020 (the station’s own record) |
| Nearest station of any kind | 9.3 km |
| Sunshine measured at | Rennes-Saint-Jacques, 39 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 Rimou 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 |
|---|---|---|---|---|
| Rimou | Pontorson | 23.1°C | 3.4°C | 821 mm |
| Val-Couesnon 6.9 km | same station | 23.1°C about the same | 3.4°C about the same | 821 mm |
| Sens-de-Bretagne 7 km | Fougères | 23.3°C about the same | 3.2°C about the same | 939 mm |
| Maen Roch 13 km | Fougères | 23.3°C about the same | 3.2°C about the same | 939 mm |
| Combourg 16 km | Le Quiou | 24.7°C 1.6°C warmer | 3.0°C about the same | 757 mm |
| Saint-Aubin-d'Aubigné 16 km | Rennes-Saint-Jacques | 24.8°C 1.7°C warmer | 3.3°C about the same | 691 mm |
| Pontorson 18 km | same station | 23.1°C about the same | 3.4°C about the same | 821 mm |
Rimou 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 Rimou’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Pontorson, 21 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, 39 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 Rimou’s climate
How warm does Rimou 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 Rimou 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 Rimou 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 (39 km away), averages 1,762 hours of sunshine a year.
Are these figures for Rimou itself?
No: they are the normals of the Météo-France station matched to Rimou, Pontorson, 21 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 Rimou →
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.