January in Coëx stays gentler than in 90% of mainland French towns
Peak summer warmth arrives in July, with afternoons near 25.1°C. Its yearly rainfall tops that of 85% of mainland French towns. Temperatures cover 22°C across the year, low to high. Windscreens need scraping on about 26 mornings a year, the nights the air drops below 0°C.
Figures from Météo-France’s La Mothe Achard station, 13 km south-east.
A year in Coëx at a glance
Each month’s typical high and low in °C, at the La Mothe Achard station.
What a year in Coëx feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at La Mothe Achard.
About 959 mm of rain a year
November is the wettest month and June the driest. About 30 days a year bring 10 mm or more. 2nd wettest of 75 towns of 2,500+ in Vendée.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Château-D’Olonne
26 frosts and 48 days of 25°C a year
On about 26 nights a year the air drops to 0°C or below, and on about under 1 days it stays below freezing all day. About 48 days a year reach 25°C, and 13 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at La Mothe Achard: 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 Mothe Achard
La Mothe Achard is 13 km south-east of Coëx. Every figure on this page is the station’s, not a measurement in Coëx itself.
| Station (Météo-France number) | La Mothe Achard (85152001) |
| Distance from the town | 13 km south-east |
| Station altitude | 58 m |
| Town altitude (its center) | 53 m |
| Period | 1991–2020 |
| Sunshine measured at | Château-D’Olonne, 25 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 Coëx 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 Vendée.
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 |
|---|---|---|---|---|
| Coëx | La Mothe Achard | 25.1°C | 3.8°C | 959 mm |
| Commequiers 9.1 km | Le Perrier | 24.1°C 1°C cooler | 4.1°C about the same | 762 mm |
| Bretignolles-sur-Mer 11 km | same station | 25.1°C about the same | 3.8°C about the same | 959 mm |
| Le Fenouiller 11 km | Saint-Jean de Mont | 24.9°C about the same | 4.1°C about the same | 783 mm |
| Brem-sur-Mer 12 km | same station | 25.1°C about the same | 3.8°C about the same | 959 mm |
| Aizenay 12 km | Palluau | 25.9°C 0.8°C warmer | 3.1°C 0.7°C colder | 929 mm |
| Saint-Gilles-Croix-de-Vie 13 km | Saint-Jean de Mont | 24.9°C about the same | 4.1°C about the same | 783 mm |
Coëx weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the La Mothe Achard station; sunshine at Château-D’Olonne.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.4°C | 3.8°C | 6.6°C | 105 mm | 92 |
| February | 10.4°C | 3.4°C | 6.9°C | 77 mm | 132 |
| March | 13.3°C | 5.0°C | 9.1°C | 69 mm | 178 |
| April | 15.8°C | 6.6°C | 11.2°C | 71 mm | 234 |
| May | 19.5°C | 9.9°C | 14.7°C | 62 mm | 260 |
| June | 23.0°C | 12.7°C | 17.9°C | 45 mm | 276 |
| July | 25.1°C | 14.2°C | 19.6°C | 50 mm | 291 |
| August | 25.2°C | 14.2°C | 19.7°C | 59 mm | 268 |
| September | 22.4°C | 11.9°C | 17.2°C | 82 mm | 227 |
| October | 17.8°C | 10.1°C | 14.0°C | 107 mm | 154 |
| November | 13.0°C | 6.6°C | 9.8°C | 119 mm | 111 |
| December | 10.1°C | 4.2°C | 7.2°C | 114 mm | 99 |
| Year | 17.1°C | 8.5°C | 12.8°C | 959 mm | 2,324 |
Where Coëx’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for La Mothe Achard, 13 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, Château-D’Olonne, 25 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 Vendée.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Coëx’s climate
How warm does Coëx get in summer?
August is the warmest month, with average highs of 25.2°C. About 48 days a year reach 25°C, fewer than 71% of mainland French towns, and about 13 reach 30°C.
How cold does Coëx get in winter?
February nights average 3.4°C. The air drops to 0°C or below on about 26 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Coëx get?
About 959 mm a year, more than 85% of mainland French towns. November is the wettest month (119 mm) and June the driest (45 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Château-D’Olonne (25 km away), averages 2,324 hours of sunshine a year.
Are these figures for Coëx itself?
No: they are the normals of the Météo-France station matched to Coëx, La Mothe Achard, 13 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 MOTHE ACHARD, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Coëx →
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.