Gaillon sits near the bottom of mainland French towns for rain, with 601 mm a year
The coldest hours of a January night bottom out at 1.6°C on average. Only about 36 days a year reach 25°C, fewer than in 85% of mainland French towns. The gap between a January night and a July afternoon is 23°C. Waterproofs come out on about 113 days a year, each with 1 mm of rain or more.
Figures from Météo-France’s Evreux-Huest station, 17 km south-west.
A year in Gaillon at a glance
Each month’s typical high and low in °C, at the Evreux-Huest station.
What a year in Gaillon feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Evreux-Huest.
About 601 mm of rain a year
December is the wettest month and February the driest. About 14 days a year bring 10 mm or more. 33rd wettest of 39 towns of 2,500+ in Eure.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Evreux-Huest
45 frosts and 36 days of 25°C a year
On about 45 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 36 days a year reach 25°C, and 8 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Evreux-Huest: 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 Evreux-Huest
Evreux-Huest is 17 km south-west of Gaillon. Every figure on this page is the station’s, not a measurement in Gaillon itself.
| Station (Météo-France number) | Evreux-Huest (27347001) |
| Distance from the town | 17 km south-west |
| Station altitude | 138 m |
| Town altitude (its center) | 19 m |
| Period | 1991–2020 |
| Nearest station of any kind | 8.4 km |
| Sunshine measured at | the same station |
Gaillon sits 119 m lower than the station. Air usually warms by about 0.65°C every 100 m you go down, so expect Gaillon to run about 0.8°C warmer than these figures.
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 Gaillon 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 Eure.
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 |
|---|---|---|---|---|
| Gaillon | Evreux-Huest | 24.2°C | 1.6°C | 601 mm |
| Le Val d'Hazey 1.6 km | same station | 24.2°C about the same | 1.6°C about the same | 601 mm |
| La Chapelle-Longueville 8.9 km | same station | 24.2°C about the same | 1.6°C about the same | 601 mm |
| Saint-Marcel 11 km | same station | 24.2°C about the same | 1.6°C about the same | 601 mm |
| Les Andelys 12 km | Étrépagny | 25.3°C 1.1°C warmer | 1.4°C about the same | 774 mm |
| Vernon 13 km | Magnanville | 25.5°C 1.3°C warmer | 1.7°C about the same | 642 mm |
| Louviers 14 km | Rouen - Jardin | 25.9°C 1.7°C warmer | 2.7°C 1.1°C milder | 818 mm |
Gaillon weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Evreux-Huest station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.0°C | 1.6°C | 4.3°C | 49 mm | 64 |
| February | 8.1°C | 1.5°C | 4.8°C | 44 mm | 80 |
| March | 11.7°C | 3.4°C | 7.5°C | 44 mm | 128 |
| April | 15.0°C | 5.1°C | 10.0°C | 44 mm | 173 |
| May | 18.3°C | 8.4°C | 13.3°C | 54 mm | 194 |
| June | 21.6°C | 11.4°C | 16.5°C | 51 mm | 208 |
| July | 24.2°C | 13.3°C | 18.8°C | 49 mm | 214 |
| August | 24.2°C | 13.3°C | 18.8°C | 45 mm | 206 |
| September | 20.7°C | 10.6°C | 15.6°C | 45 mm | 170 |
| October | 15.7°C | 8.0°C | 11.9°C | 58 mm | 120 |
| November | 10.6°C | 4.5°C | 7.6°C | 54 mm | 72 |
| December | 7.4°C | 2.0°C | 4.7°C | 65 mm | 62 |
| Year | 15.4°C | 6.9°C | 11.2°C | 601 mm | 1,690 |
Where Gaillon’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Evreux-Huest, 17 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, Evreux-Huest, 17 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 Eure.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Gaillon’s climate
How warm does Gaillon get in summer?
July is the warmest month, with average highs of 24.2°C. About 36 days a year reach 25°C, fewer than 85% of mainland French towns, and about 8 reach 30°C.
How cold does Gaillon get in winter?
February nights average 1.5°C. The air drops to 0°C or below on about 45 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Gaillon get?
About 601 mm a year, less than 96% of mainland French towns. December is the wettest month (65 mm) and February the driest (44 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Evreux-Huest (17 km away), averages 1,690 hours of sunshine a year.
Are these figures for Gaillon itself?
No: they are the normals of the Météo-France station matched to Gaillon, Evreux-Huest, 17 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 EVREUX-HUEST, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Gaillon →
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.