Saint-Léonard has some of the coolest summers among mainland French towns
In January the night’s low is typically 3.5°C. Frost is rarer than in 89% of mainland French towns: about 21 nights a year drop below freezing. The gap between a January night and a July afternoon is 18°C. Expect about 21 frosty starts a year, nights when the air falls below freezing.
Figures from Météo-France’s Octeville station, 30 km south-west: at that distance, read them as the area’s climate rather than the town’s.
A year in Saint-Léonard at a glance
Each month’s typical high and low in °C, at the Octeville station.
What a year in Saint-Léonard feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Octeville.
About 791 mm of rain a year
December is the wettest month and April the driest. About 22 days a year bring 10 mm or more. 61st wettest of 76 towns of 2,500+ in Seine-Maritime.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Gatien des B
21 frosts and 16 days of 25°C a year
On about 21 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 16 days a year reach 25°C, and 3 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Octeville: 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 Octeville
Octeville is 30 km south-west of Saint-Léonard. Every figure on this page is the station’s, not a measurement in Saint-Léonard itself.
| Station (Météo-France number) | Octeville (76481001) |
| Distance from the town | 30 km south-west |
| Station altitude | 90 m |
| Town altitude (its center) | 99 m |
| Period | 1994–2020 (the station’s own record) |
| Sunshine measured at | Saint-Gatien des B, 44 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 Saint-Léonard 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 Seine-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 |
|---|---|---|---|---|
| Saint-Léonard | Octeville | 21.2°C | 3.5°C | 791 mm |
| Fécamp 2.3 km | same station | 21.2°C about the same | 3.5°C about the same | 791 mm |
| Goderville 10 km | same station | 21.2°C about the same | 3.5°C about the same | 791 mm |
| Criquetot-l'Esneval 13 km | same station | 21.2°C about the same | 3.5°C about the same | 791 mm |
| Terres-de-Caux 20 km | Jumièges | 25.2°C 4°C warmer | 2.7°C 0.8°C colder | 844 mm |
| Bolbec 21 km | same station | 21.2°C about the same | 3.5°C about the same | 791 mm |
| Cany-Barville 21 km | Dieppe | 20.5°C 0.7°C cooler | 3.4°C about the same | 805 mm |
Saint-Léonard weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Octeville station; sunshine at Saint-Gatien des B.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.7°C | 3.5°C | 5.6°C | 68 mm | 67 |
| February | 8.4°C | 3.4°C | 5.9°C | 60 mm | 81 |
| March | 10.7°C | 4.8°C | 7.7°C | 53 mm | 128 |
| April | 13.5°C | 6.4°C | 10.0°C | 43 mm | 178 |
| May | 16.5°C | 9.4°C | 13.0°C | 59 mm | 190 |
| June | 19.5°C | 12.2°C | 15.8°C | 57 mm | 203 |
| July | 21.2°C | 14.3°C | 17.7°C | 50 mm | 205 |
| August | 21.4°C | 14.7°C | 18.1°C | 68 mm | 196 |
| September | 19.2°C | 12.5°C | 15.9°C | 66 mm | 160 |
| October | 15.7°C | 10.2°C | 12.9°C | 85 mm | 113 |
| November | 11.4°C | 6.9°C | 9.1°C | 87 mm | 71 |
| December | 8.4°C | 4.2°C | 6.3°C | 96 mm | 58 |
| Year | 14.5°C | 8.5°C | 11.5°C | 791 mm | 1,651 |
Where Saint-Léonard’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Octeville, 30 km away: statistics for 1991–2020 (the station’s own years, 1994–2020, where its record is shorter).
- 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, Saint-Gatien des B, 44 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 Seine-Maritime.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Saint-Léonard’s climate
How warm does Saint-Léonard get in summer?
August is the warmest month, with average highs of 21.4°C. About 16 days a year reach 25°C, fewer than 97% of mainland French towns, and about 3 reach 30°C.
How cold does Saint-Léonard get in winter?
February nights average 3.4°C. The air drops to 0°C or below on about 21 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Saint-Léonard get?
About 791 mm a year, more than 57% of mainland French towns. December is the wettest month (96 mm) and April the driest (43 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Gatien des B (44 km away), averages 1,651 hours of sunshine a year.
Are these figures for Saint-Léonard itself?
No: they are the normals of the Météo-France station matched to Saint-Léonard, Octeville, 30 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 OCTEVILLE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Saint-Léonard →
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.