Less rain falls on Ecquevilly than on 76% of mainland French towns: 677 mm a year
July afternoons average 26.2°C. By frosts alone, it ranks colder than 72% of mainland French towns. A year here swings 25°C from midwinter lows to midsummer highs. From May to September, highs of 20–26°C make it easy to spend the day outdoors.
These are the figures of Météo-France’s Maule station, 6.9 km south-west.
A year in Ecquevilly at a glance
Each month’s typical high and low in °C, at the Maule station.
What a year in Ecquevilly feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Maule.
About 677 mm of rain a year
December is the wettest month and September the driest. About 18 days a year bring 10 mm or more. 30th wettest of 95 towns of 2,500+ in Yvelines.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Trappes
A frosty town: 52 frosts and 63 days of 25°C a year
On about 52 nights a year the air drops to 0°C or below, and on about 3 days it stays below freezing all day. About 63 days a year reach 25°C, and 19 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Maule: 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 Maule
Maule is 6.9 km south-west of Ecquevilly. Every figure on this page is the station’s, not a measurement in Ecquevilly itself.
| Station (Météo-France number) | Maule (78380001) |
| Distance from the town | 6.9 km south-west |
| Station altitude | 33 m |
| Town altitude (its center) | 65 m |
| Period | 1991–2020 |
| Sunshine measured at | Trappes, 21 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 Ecquevilly 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 Yvelines.
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 |
|---|---|---|---|---|
| Ecquevilly | Maule | 26.2°C | 1.7°C | 677 mm |
| Morainvilliers 2.7 km | same station | 26.2°C about the same | 1.7°C about the same | 677 mm |
| Les Mureaux 4 km | same station | 26.2°C about the same | 1.7°C about the same | 677 mm |
| Verneuil-sur-Seine 4.8 km | same station | 26.2°C about the same | 1.7°C about the same | 677 mm |
| Vernouillet 4.9 km | Pontoise -Ville | 26.1°C about the same | 2.7°C 1°C milder | 667 mm |
| Orgeval 4.9 km | same station | 26.2°C about the same | 1.7°C about the same | 677 mm |
| Aubergenville 5.1 km | same station | 26.2°C about the same | 1.7°C about the same | 677 mm |
Ecquevilly weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Maule station; sunshine at Trappes.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.7°C | 1.7°C | 4.7°C | 57 mm | 57 |
| February | 8.9°C | 1.3°C | 5.1°C | 50 mm | 81 |
| March | 12.9°C | 3.1°C | 8.0°C | 51 mm | 134 |
| April | 16.7°C | 4.9°C | 10.8°C | 47 mm | 176 |
| May | 20.4°C | 8.5°C | 14.4°C | 65 mm | 202 |
| June | 23.7°C | 11.6°C | 17.7°C | 56 mm | 210 |
| July | 26.2°C | 13.4°C | 19.8°C | 53 mm | 222 |
| August | 26.0°C | 13.1°C | 19.5°C | 53 mm | 216 |
| September | 22.0°C | 10.1°C | 16.1°C | 46 mm | 177 |
| October | 16.8°C | 7.7°C | 12.2°C | 65 mm | 117 |
| November | 11.3°C | 4.4°C | 7.8°C | 61 mm | 68 |
| December | 8.0°C | 2.1°C | 5.1°C | 73 mm | 55 |
| Year | 16.7°C | 6.8°C | 11.8°C | 677 mm | 1,714 |
Where Ecquevilly’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Maule, 6.9 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, Trappes, 21 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 Yvelines.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Ecquevilly’s climate
How warm does Ecquevilly get in summer?
July is the warmest month, with average highs of 26.2°C. About 63 days a year reach 25°C, more than 53% of mainland French towns, and about 19 reach 30°C.
How cold does Ecquevilly get in winter?
February nights average 1.3°C. The air drops to 0°C or below on about 52 nights a year, and about 3 days a year stay below freezing all day.
How much rain does Ecquevilly get?
About 677 mm a year, less than 76% of mainland French towns. December is the wettest month (73 mm) and September the driest (46 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Trappes (21 km away), averages 1,714 hours of sunshine a year.
Are these figures for Ecquevilly itself?
No: they are the normals of the Météo-France station matched to Ecquevilly, Maule, 6.9 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 MAULE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Ecquevilly →
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.