Summer warmth: Grébault-Mesnil logs fewer 25-degree days than 92% of mainland French towns
On a normal January night the air cools to about 1.9°C. Rain is plentiful here, more than falls on 60% of mainland French towns. From frosty January to warm July, readings climb 21°C. An umbrella earns its place on about 132 days a year with 1 mm of rain or more.
These are the figures of Météo-France’s Oisemont station, 8.1 km south-east.
A year in Grébault-Mesnil at a glance
Each month’s typical high and low in °C, at the Oisemont station.
What a year in Grébault-Mesnil 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. 7th wettest of 24 towns of 2,500+ in Somme.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Amiens-Glisy
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 8.1 km south-east of Grébault-Mesnil. Every figure on this page is the station’s, not a measurement in Grébault-Mesnil itself.
| Station (Météo-France number) | Oisemont (80606002) |
| Distance from the town | 8.1 km south-east |
| Station altitude | 121 m |
| Town altitude (its center) | 102 m |
| Period | 1991–2020 |
| Sunshine measured at | Amiens-Glisy, 50 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 Grébault-Mesnil 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 Somme.
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 |
|---|---|---|---|---|
| Grébault-Mesnil | Oisemont | 23.2°C | 1.9°C | 801 mm |
| Abbeville 12 km | Abbeville | 22.4°C 0.8°C cooler | 2.2°C about the same | 806 mm |
| Blangy-sur-Bresle 12 km | same station | 23.2°C about the same | 1.9°C about the same | 801 mm |
| Friville-Escarbotin 14 km | Abbeville | 22.4°C 0.8°C cooler | 2.2°C about the same | 806 mm |
| Eu 22 km | Dieppe | 20.5°C 2.7°C cooler | 3.4°C 1.5°C milder | 805 mm |
| Mers-les-Bains 24 km | Dieppe | 20.5°C 2.7°C cooler | 3.4°C 1.5°C milder | 805 mm |
| Le Tréport 25 km | Dieppe | 20.5°C 2.7°C cooler | 3.4°C 1.5°C milder | 805 mm |
Grébault-Mesnil weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Oisemont station; sunshine at Amiens-Glisy.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.9°C | 1.9°C | 4.4°C | 68 mm | 64 |
| February | 7.7°C | 1.9°C | 4.8°C | 59 mm | 87 |
| March | 11.2°C | 3.7°C | 7.4°C | 58 mm | 147 |
| April | 14.8°C | 5.2°C | 10.0°C | 49 mm | 206 |
| 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 | 220 |
| July | 23.2°C | 13.4°C | 18.3°C | 60 mm | 224 |
| August | 23.3°C | 13.5°C | 18.4°C | 72 mm | 188 |
| September | 20.1°C | 11.0°C | 15.5°C | 64 mm | 168 |
| October | 15.5°C | 8.4°C | 12.0°C | 73 mm | 117 |
| November | 10.5°C | 5.1°C | 7.8°C | 81 mm | 71 |
| December | 7.3°C | 2.6°C | 5.0°C | 97 mm | 67 |
| Year | 15.0°C | 7.2°C | 11.1°C | 801 mm | 1,761 |
Where Grébault-Mesnil’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Oisemont, 8.1 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, Amiens-Glisy, 50 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 Somme.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Grébault-Mesnil’s climate
How warm does Grébault-Mesnil 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 Grébault-Mesnil 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 Grébault-Mesnil 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, Amiens-Glisy (50 km away), averages 1,761 hours of sunshine a year.
Are these figures for Grébault-Mesnil itself?
No: they are the normals of the Météo-France station matched to Grébault-Mesnil, Oisemont, 8.1 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 Grébault-Mesnil →
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.