Winter nights in Marsilly are milder than in 95% of mainland French towns
Peak summer warmth arrives in July, with afternoons near 24.6°C. A year here swings 21°C from midwinter lows to midsummer highs. In July, afternoons here are cooler than in 77% of mainland French towns. The heating season runs December to March: each of those months averages under 10°C.
Figures from Météo-France’s La Rochelle-Île de Re station, 7.4 km south-west.
A year in Marsilly at a glance
Each month’s typical high and low in °C, at the La Rochelle-Île de Re station.
What a year in Marsilly feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at La Rochelle-Île de Re.
About 754 mm of rain a year
November is the wettest month and June the driest. About 22 days a year bring 10 mm or more. 36th wettest of 54 towns of 2,500+ in Charente-Maritime.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at La Rochelle-Île de Re
19 frosts and 44 days of 25°C a year
On about 19 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 11 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at La Rochelle-Île de Re: 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 La Rochelle-Île de Re
La Rochelle-Île de Re is 7.4 km south-west of Marsilly. Every figure on this page is the station’s, not a measurement in Marsilly itself.
| Station (Météo-France number) | La Rochelle-Île de Re (17300009) |
| Distance from the town | 7.4 km south-west |
| Station altitude | 20 m |
| Town altitude (its center) | 19 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 Marsilly 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 Charente-Maritime.
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 |
|---|---|---|---|---|
| Marsilly | La Rochelle-Île de Re | 24.6°C | 4.4°C | 754 mm |
| Nieul-sur-Mer 3.7 km | same station | 24.6°C about the same | 4.4°C about the same | 754 mm |
| Saint-Xandre 3.9 km | same station | 24.6°C about the same | 4.4°C about the same | 754 mm |
| Puilboreau 5.4 km | same station | 24.6°C about the same | 4.4°C about the same | 754 mm |
| Lagord 5.6 km | same station | 24.6°C about the same | 4.4°C about the same | 754 mm |
| L'Houmeau 6 km | same station | 24.6°C about the same | 4.4°C about the same | 754 mm |
| Dompierre-sur-Mer 7.2 km | same station | 24.6°C about the same | 4.4°C about the same | 754 mm |
Marsilly weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the La Rochelle-Île de Re station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.6°C | 4.4°C | 7.0°C | 76 mm | 91 |
| February | 10.6°C | 4.1°C | 7.3°C | 56 mm | 131 |
| March | 13.6°C | 6.1°C | 9.8°C | 57 mm | 179 |
| April | 16.1°C | 7.9°C | 12.0°C | 61 mm | 231 |
| May | 19.6°C | 11.3°C | 15.5°C | 51 mm | 258 |
| June | 22.8°C | 14.4°C | 18.6°C | 39 mm | 253 |
| July | 24.6°C | 16.4°C | 20.5°C | 40 mm | 297 |
| August | 24.9°C | 16.3°C | 20.6°C | 46 mm | 278 |
| September | 22.5°C | 13.6°C | 18.0°C | 60 mm | 234 |
| October | 18.3°C | 11.2°C | 14.7°C | 84 mm | 155 |
| November | 13.4°C | 7.4°C | 10.4°C | 95 mm | 109 |
| December | 10.3°C | 4.8°C | 7.5°C | 90 mm | 90 |
| Year | 17.2°C | 9.8°C | 13.5°C | 754 mm | 2,303 |
Where Marsilly’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for La Rochelle-Île de Re, 7.4 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, La Rochelle-Île de Re, 7.4 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 Charente-Maritime.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Marsilly’s climate
How warm does Marsilly get in summer?
August is the warmest month, with average highs of 24.9°C. About 44 days a year reach 25°C, fewer than 76% of mainland French towns, and about 11 reach 30°C.
How cold does Marsilly get in winter?
February nights average 4.1°C. The air drops to 0°C or below on about 19 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Marsilly get?
About 754 mm a year, less than 50% of mainland French towns. November is the wettest month (95 mm) and June the driest (39 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, La Rochelle-Île de Re (7.4 km away), averages 2,303 hours of sunshine a year.
Are these figures for Marsilly itself?
No: they are the normals of the Météo-France station matched to Marsilly, La Rochelle-Île de Re, 7.4 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 LA ROCHELLE-ILE DE RE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Marsilly →
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.