Winter nights in Île-d'Aix are milder than in 85% of mainland French towns
High summer brings afternoon highs near 25.0°C. The rainiest month is November; the driest is July. Summers stay cool: July afternoons here are cooler than in 72% of mainland French towns. An umbrella earns its place on about 119 days a year with 1 mm of rain or more.
Figures from Météo-France’s Saint-Laurent Prée-Inrae station, 12 km east.
A year in Île-d'Aix at a glance
Each month’s typical high and low in °C, at the Saint-Laurent Prée-Inrae station.
What a year in Île-d'Aix feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Saint-Laurent Prée-Inrae.
About 781 mm of rain a year
November is the wettest month and July the driest. About 25 days a year bring 10 mm or more. 28th 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
29 frosts and 51 days of 25°C a year
On about 29 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 51 days a year reach 25°C, and 14 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Saint-Laurent Prée-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 Saint-Laurent Prée-Inrae
Saint-Laurent Prée-Inrae is 12 km east of Île-d'Aix. Every figure on this page is the station’s, not a measurement in Île-d'Aix itself.
| Station (Météo-France number) | Saint-Laurent Prée-Inrae (17353001) |
| Distance from the town | 12 km east |
| Station altitude | 3 m |
| Town altitude (its center) | 3 m |
| Period | 1991–2020 |
| Nearest station of any kind | 1.6 km |
| Sunshine measured at | La Rochelle-Île de Re, 18 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 Île-d'Aix 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 |
|---|---|---|---|---|
| Île-d'Aix | Saint-Laurent Prée-Inrae | 25.0°C | 3.5°C | 781 mm |
| Fouras 7.8 km | same station | 25.0°C about the same | 3.5°C about the same | 781 mm |
| Châtelaillon-Plage 9.5 km | same station | 25.0°C about the same | 3.5°C about the same | 781 mm |
| Angoulins 11 km | La Rochelle-Île de Re | 24.6°C about the same | 4.4°C 0.9°C milder | 754 mm |
| Dolus-d'Oléron 13 km | Château d'Oléron | 24.6°C about the same | 4.8°C 1.3°C milder | 782 mm |
| Saint-Georges-d'Oléron 13 km | Chassiron | 22.3°C 2.7°C cooler | 5.8°C 2.3°C milder | 683 mm |
| Saint-Pierre-d'Oléron 14 km | Château d'Oléron | 24.6°C about the same | 4.8°C 1.3°C milder | 782 mm |
Île-d'Aix weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Saint-Laurent Prée-Inrae station; sunshine at La Rochelle-Île de Re.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.9°C | 3.5°C | 6.7°C | 78 mm | 91 |
| February | 11.0°C | 3.1°C | 7.1°C | 55 mm | 131 |
| March | 14.2°C | 5.1°C | 9.6°C | 56 mm | 179 |
| April | 16.7°C | 7.0°C | 11.9°C | 63 mm | 231 |
| May | 20.2°C | 10.5°C | 15.3°C | 54 mm | 258 |
| June | 23.3°C | 13.5°C | 18.4°C | 44 mm | 253 |
| July | 25.0°C | 15.3°C | 20.1°C | 43 mm | 297 |
| August | 25.4°C | 15.1°C | 20.2°C | 44 mm | 278 |
| September | 23.0°C | 12.4°C | 17.7°C | 67 mm | 234 |
| October | 18.8°C | 10.0°C | 14.4°C | 86 mm | 155 |
| November | 13.6°C | 6.3°C | 10.0°C | 100 mm | 109 |
| December | 10.5°C | 3.9°C | 7.2°C | 90 mm | 90 |
| Year | 17.6°C | 8.8°C | 13.2°C | 781 mm | 2,303 |
Where Île-d'Aix’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Saint-Laurent Prée-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, La Rochelle-Île de Re, 18 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 Île-d'Aix’s climate
How warm does Île-d'Aix get in summer?
August is the warmest month, with average highs of 25.4°C. About 51 days a year reach 25°C, fewer than 67% of mainland French towns, and about 14 reach 30°C.
How cold does Île-d'Aix get in winter?
February nights average 3.1°C. The air drops to 0°C or below on about 29 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Île-d'Aix get?
About 781 mm a year, more than 55% of mainland French towns. November is the wettest month (100 mm) and July the driest (43 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, La Rochelle-Île de Re (18 km away), averages 2,303 hours of sunshine a year.
Are these figures for Île-d'Aix itself?
No: they are the normals of the Météo-France station matched to Île-d'Aix, Saint-Laurent Prée-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 ST-LAURENT PREE-INRAE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Île-d'Aix →
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.