Rainfall in Hermé trails that of 86% of mainland French towns: 636 mm a year
Peak summer warmth arrives in July, with afternoons near 26.3°C. Of all months, October brings the most rain and March the least. About 53 nights a year bring a frost, more than in 74% of mainland French towns. The outdoor season runs from May to September, with highs of 20–26°C.
These are the figures of Météo-France’s Bouy-sur-Orvin station, 12 km south-east.
A year in Hermé at a glance
Each month’s typical high and low in °C, at the Bouy-sur-Orvin station.
What a year in Hermé feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Bouy-sur-Orvin.
About 636 mm of rain a year
October is the wettest month and March the driest. About 15 days a year bring 10 mm or more. 117th wettest of 116 towns of 2,500+ in Seine-et-Marne.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Melun
A frosty town: 53 frosts and 57 days of 25°C a year
On about 53 nights a year the air drops to 0°C or below, and on about 6 days it stays below freezing all day. About 57 days a year reach 25°C, and 17 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Bouy-sur-Orvin: 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 Bouy-sur-Orvin
Bouy-sur-Orvin is 12 km south-east of Hermé. Every figure on this page is the station’s, not a measurement in Hermé itself.
| Station (Météo-France number) | Bouy-sur-Orvin (10057001) |
| Distance from the town | 12 km south-east |
| Station altitude | 102 m |
| Town altitude (its center) | 62 m |
| Period | 1991–2020 |
| Sunshine measured at | Melun, 51 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 Hermé 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-et-Marne.
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 |
|---|---|---|---|---|
| Hermé | Bouy-sur-Orvin | 26.3°C | 1.3°C | 636 mm |
| Provins 9 km | Voulton | 25.6°C 0.7°C cooler | 1.2°C about the same | 741 mm |
| Nogent-sur-Seine 11 km | same station | 26.3°C about the same | 1.3°C about the same | 636 mm |
| Donnemarie-Dontilly 16 km | La Brosse-Mx | 26.4°C about the same | 2.0°C 0.7°C milder | 653 mm |
| Villenauxe-la-Grande 19 km | Romilly | 26.2°C about the same | 0.8°C 0.5°C colder | 620 mm |
| Pont-sur-Yonne 25 km | La Brosse-Mx | 26.4°C about the same | 2.0°C 0.7°C milder | 653 mm |
| Nangis 26 km | Nangis | 25.3°C 1°C cooler | 1.3°C about the same | 704 mm |
Hermé weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Bouy-sur-Orvin station; sunshine at Melun.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 6.5°C | 1.3°C | 3.9°C | 48 mm | 60 |
| February | 7.9°C | 1.1°C | 4.5°C | 45 mm | 83 |
| March | 12.2°C | 2.8°C | 7.5°C | 44 mm | 143 |
| April | 16.0°C | 4.6°C | 10.3°C | 49 mm | 188 |
| May | 19.7°C | 8.3°C | 14.0°C | 59 mm | 216 |
| June | 23.4°C | 11.1°C | 17.2°C | 57 mm | 226 |
| July | 26.3°C | 13.2°C | 19.8°C | 50 mm | 235 |
| August | 26.0°C | 13.3°C | 19.6°C | 59 mm | 225 |
| September | 21.6°C | 10.3°C | 16.0°C | 50 mm | 180 |
| October | 16.2°C | 7.8°C | 12.0°C | 61 mm | 119 |
| November | 10.4°C | 4.3°C | 7.3°C | 54 mm | 68 |
| December | 7.1°C | 2.0°C | 4.6°C | 59 mm | 54 |
| Year | 16.1°C | 6.7°C | 11.4°C | 636 mm | 1,798 |
Where Hermé’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Bouy-sur-Orvin, 12 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, Melun, 51 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-et-Marne.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Hermé’s climate
How warm does Hermé get in summer?
July is the warmest month, with average highs of 26.3°C. About 57 days a year reach 25°C, fewer than 57% of mainland French towns, and about 17 reach 30°C.
How cold does Hermé get in winter?
February nights average 1.1°C. The air drops to 0°C or below on about 53 nights a year, and about 6 days a year stay below freezing all day.
How much rain does Hermé get?
About 636 mm a year, less than 86% of mainland French towns. October is the wettest month (61 mm) and March the driest (44 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Melun (51 km away), averages 1,798 hours of sunshine a year.
Are these figures for Hermé itself?
No: they are the normals of the Météo-France station matched to Hermé, Bouy-sur-Orvin, 12 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 BOUY-SUR-ORVIN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Hermé →
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.