Rétonval gets fewer days of 25 degrees or more than 92% of mainland French towns
January mornings start at about 1.9°C. Seasons differ by 21°C, from the coldest nights to the warmest afternoons. It is a wet place: more rain falls here than on 60% of mainland French towns. Homes need heating from November to March, the months averaging under 10°C.
These are the figures of Météo-France’s Oisemont station, 20 km north-east.
A year in Rétonval at a glance
Each month’s typical high and low in °C, at the Oisemont station.
What a year in Rétonval feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Oisemont.
About 801 mm of rain a year
December is the wettest month and April the driest. About 23 days a year bring 10 mm or more. 59th wettest of 76 towns of 2,500+ in Seine-Maritime.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Beauvais-Tillé
37 frosts and 29 days of 25°C a year
On about 37 nights a year the air drops to 0°C or below, and on about 4 days it stays below freezing all day. About 29 days a year reach 25°C, and 6 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Oisemont: 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 Oisemont
Oisemont is 20 km north-east of Rétonval. Every figure on this page is the station’s, not a measurement in Rétonval itself.
| Station (Météo-France number) | Oisemont (80606002) |
| Distance from the town | 20 km north-east |
| Station altitude | 121 m |
| Town altitude (its center) | 158 m |
| Period | 1991–2020 |
| Nearest station of any kind | 12 km |
| Sunshine measured at | Beauvais-Tillé, 56 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 Rétonval 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 |
|---|---|---|---|---|
| Rétonval | Oisemont | 23.2°C | 1.9°C | 801 mm |
| Blangy-sur-Bresle 13 km | same station | 23.2°C about the same | 1.9°C about the same | 801 mm |
| Neufchâtel-en-Bray 15 km | same station | 23.2°C about the same | 1.9°C about the same | 801 mm |
| Forges-les-Eaux 23 km | Rouen-Boos | 23.4°C about the same | 1.6°C about the same | 848 mm |
| Saint-Nicolas-d'Aliermont 28 km | Dieppe | 20.5°C 2.7°C cooler | 3.4°C 1.5°C milder | 805 mm |
| Eu 28 km | Dieppe | 20.5°C 2.7°C cooler | 3.4°C 1.5°C milder | 805 mm |
Rétonval weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Oisemont station; sunshine at Beauvais-Tillé.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.9°C | 1.9°C | 4.4°C | 68 mm | 60 |
| February | 7.7°C | 1.9°C | 4.8°C | 59 mm | 79 |
| March | 11.2°C | 3.7°C | 7.4°C | 58 mm | 127 |
| April | 14.8°C | 5.2°C | 10.0°C | 49 mm | 179 |
| May | 18.0°C | 8.3°C | 13.2°C | 63 mm | 203 |
| June | 21.0°C | 11.3°C | 16.1°C | 58 mm | 209 |
| July | 23.2°C | 13.4°C | 18.3°C | 60 mm | 220 |
| August | 23.3°C | 13.5°C | 18.4°C | 72 mm | 208 |
| September | 20.1°C | 11.0°C | 15.5°C | 64 mm | 164 |
| October | 15.5°C | 8.4°C | 12.0°C | 73 mm | 112 |
| November | 10.5°C | 5.1°C | 7.8°C | 81 mm | 68 |
| December | 7.3°C | 2.6°C | 5.0°C | 97 mm | 55 |
| Year | 15.0°C | 7.2°C | 11.1°C | 801 mm | 1,682 |
Where Rétonval’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Oisemont, 20 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, Beauvais-Tillé, 56 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 Rétonval’s climate
How warm does Rétonval get in summer?
August is the warmest month, with average highs of 23.3°C. About 29 days a year reach 25°C, fewer than 92% of mainland French towns, and about 6 reach 30°C.
How cold does Rétonval get in winter?
January nights average 1.9°C. The air drops to 0°C or below on about 37 nights a year, and about 4 days a year stay below freezing all day.
How much rain does Rétonval get?
About 801 mm a year, more than 60% of mainland French towns. December is the wettest month (97 mm) and April the driest (49 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Beauvais-Tillé (56 km away), averages 1,682 hours of sunshine a year.
Are these figures for Rétonval itself?
No: they are the normals of the Météo-France station matched to Rétonval, Oisemont, 20 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 OISEMONT_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Rétonval →
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.