Less rain falls on Rou-Marson than on 93% of mainland French towns: 616 mm a year
The coldest hours of a January night bottom out at 2.9°C on average. The gap between a January night and a July afternoon is 24°C. Winters are mild: January nights here are milder than in 72% of mainland French towns. Frost greets about 34 mornings a year, so leave time to clear the car.
These are the figures of Météo-France’s Mont-Bellay-Inrae station, 12 km south.
A year in Rou-Marson at a glance
Each month’s typical high and low in °C, at the Mont-Bellay-Inrae station.
What a year in Rou-Marson feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Mont-Bellay-Inrae.
About 616 mm of rain a year
October is the wettest month and August the driest. About 17 days a year bring 10 mm or more. 66th wettest of 69 towns of 2,500+ in Maine-et-Loire.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Loudun
34 frosts and 66 days of 25°C a year
On about 34 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 66 days a year reach 25°C, and 18 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Mont-Bellay-Inrae: 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 Mont-Bellay-Inrae
Mont-Bellay-Inrae is 12 km south of Rou-Marson. Every figure on this page is the station’s, not a measurement in Rou-Marson itself.
| Station (Météo-France number) | Mont-Bellay-Inrae (49215002) |
| Distance from the town | 12 km south |
| Station altitude | 58 m |
| Town altitude (its center) | 54 m |
| Period | 1991–2020 |
| Sunshine measured at | Loudun, 30 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 Rou-Marson 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 Maine-et-Loire.
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 |
|---|---|---|---|---|
| Rou-Marson | Mont-Bellay-Inrae | 26.4°C | 2.9°C | 616 mm |
| Saumur 5.9 km | same station | 26.4°C about the same | 2.9°C about the same | 616 mm |
| Bellevigne-les-Châteaux 8.7 km | same station | 26.4°C about the same | 2.9°C about the same | 616 mm |
| Doué-en-Anjou 11 km | same station | 26.4°C about the same | 2.9°C about the same | 616 mm |
| Vivy 12 km | Savigny - Véron | 26.5°C about the same | 2.8°C about the same | 638 mm |
| Montreuil-Bellay 12 km | same station | 26.4°C about the same | 2.9°C about the same | 616 mm |
| Gennes-Val-de-Loire 12 km | La Ménitré | 26.2°C about the same | 3.2°C about the same | 669 mm |
Rou-Marson weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Mont-Bellay-Inrae station; sunshine at Loudun.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.8°C | 2.9°C | 5.8°C | 56 mm | 70 |
| February | 10.2°C | 2.5°C | 6.4°C | 44 mm | 105 |
| March | 13.8°C | 4.4°C | 9.1°C | 44 mm | 156 |
| April | 16.9°C | 6.2°C | 11.6°C | 51 mm | 198 |
| May | 20.6°C | 9.8°C | 15.2°C | 54 mm | 229 |
| June | 24.3°C | 12.8°C | 18.6°C | 43 mm | 247 |
| July | 26.4°C | 14.4°C | 20.4°C | 44 mm | 260 |
| August | 26.6°C | 14.3°C | 20.4°C | 41 mm | 237 |
| September | 23.0°C | 11.4°C | 17.2°C | 47 mm | 206 |
| October | 17.9°C | 9.0°C | 13.5°C | 68 mm | 130 |
| November | 12.5°C | 5.5°C | 9.0°C | 66 mm | 87 |
| December | 9.3°C | 3.2°C | 6.2°C | 60 mm | 78 |
| Year | 17.5°C | 8.0°C | 12.8°C | 616 mm | 2,003 |
Where Rou-Marson’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Mont-Bellay-Inrae, 12 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, Loudun, 30 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 Maine-et-Loire.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Rou-Marson’s climate
How warm does Rou-Marson get in summer?
August is the warmest month, with average highs of 26.6°C. About 66 days a year reach 25°C, more than 57% of mainland French towns, and about 18 reach 30°C.
How cold does Rou-Marson get in winter?
February nights average 2.5°C. The air drops to 0°C or below on about 34 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Rou-Marson get?
About 616 mm a year, less than 93% of mainland French towns. October is the wettest month (68 mm) and August the driest (41 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Loudun (30 km away), averages 2,003 hours of sunshine a year.
Are these figures for Rou-Marson itself?
No: they are the normals of the Météo-France station matched to Rou-Marson, Mont-Bellay-Inrae, 12 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 MONT-BELLAY-INRAE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Rou-Marson →
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.