Weather without surprises: Issé keeps close to the norm for mainland French towns
July afternoons reach 25.4°C on a typical day and January nights drop to 2.8°C; 826 mm of rain falls in a year. By January nights alone, it runs milder than 69% of mainland French towns. Only 23°C separates winter nights from summer afternoons. Wet days, with 1 mm of rain or more, come about 124 times a year.
These are the figures of Météo-France’s Soudan station, 18 km north-east.
A year in Issé at a glance
Each month’s typical high and low in °C, at the Soudan station.
What a year in Issé feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Soudan.
About 826 mm of rain a year
December is the wettest month and July the driest. About 24 days a year bring 10 mm or more. 36th wettest of 133 towns of 2,500+ in Loire-Atlantique.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Nantes-Bouguenais
41 frosts and 53 days of 25°C a year
On about 41 nights a year the air drops to 0°C or below, and on about 1 days it stays below freezing all day. About 53 days a year reach 25°C, and 12 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Soudan: 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 Soudan
Soudan is 18 km north-east of Issé. Every figure on this page is the station’s, not a measurement in Issé itself.
| Station (Météo-France number) | Soudan (44199002) |
| Distance from the town | 18 km north-east |
| Station altitude | 77 m |
| Town altitude (its center) | 32 m |
| Period | 1994–2020 (the station’s own record) |
| Sunshine measured at | Nantes-Bouguenais, 54 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 Issé 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 Loire-Atlantique.
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 |
|---|---|---|---|---|
| Issé | Soudan | 25.4°C | 2.8°C | 826 mm |
| Erbray 10 km | same station | 25.4°C about the same | 2.8°C about the same | 826 mm |
| Châteaubriant 12 km | same station | 25.4°C about the same | 2.8°C about the same | 826 mm |
| Joué-sur-Erdre 13 km | Nort-sur-Erdre | 25.6°C about the same | 3.0°C about the same | 760 mm |
| Nozay 14 km | Nort-sur-Erdre | 25.6°C about the same | 3.0°C about the same | 760 mm |
| Derval 18 km | La Noë-Blanche | 25.0°C about the same | 3.2°C about the same | 781 mm |
| Saffré 18 km | Nort-sur-Erdre | 25.6°C about the same | 3.0°C about the same | 760 mm |
Issé weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Soudan station; sunshine at Nantes-Bouguenais.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.0°C | 2.8°C | 5.9°C | 90 mm | 73 |
| February | 10.3°C | 2.6°C | 6.5°C | 73 mm | 102 |
| March | 13.3°C | 3.9°C | 8.6°C | 58 mm | 147 |
| April | 16.2°C | 5.3°C | 10.7°C | 59 mm | 183 |
| May | 19.6°C | 8.6°C | 14.1°C | 62 mm | 203 |
| June | 23.2°C | 11.5°C | 17.3°C | 57 mm | 213 |
| July | 25.4°C | 13.1°C | 19.2°C | 47 mm | 229 |
| August | 25.4°C | 13.0°C | 19.2°C | 49 mm | 233 |
| September | 22.3°C | 10.5°C | 16.4°C | 61 mm | 199 |
| October | 17.6°C | 8.7°C | 13.2°C | 81 mm | 123 |
| November | 12.6°C | 5.4°C | 9.0°C | 89 mm | 91 |
| December | 9.5°C | 3.1°C | 6.3°C | 100 mm | 78 |
| Year | 17.0°C | 7.4°C | 12.2°C | 826 mm | 1,873 |
Where Issé’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Soudan, 18 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, Nantes-Bouguenais, 54 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 Loire-Atlantique.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Issé’s climate
How warm does Issé get in summer?
July is the warmest month, with average highs of 25.4°C. About 53 days a year reach 25°C, fewer than 64% of mainland French towns, and about 12 reach 30°C.
How cold does Issé get in winter?
February nights average 2.6°C. The air drops to 0°C or below on about 41 nights a year, and about 1 days a year stay below freezing all day.
How much rain does Issé get?
About 826 mm a year, more than 67% of mainland French towns. December is the wettest month (100 mm) and July the driest (47 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Nantes-Bouguenais (54 km away), averages 1,873 hours of sunshine a year.
Are these figures for Issé itself?
No: they are the normals of the Météo-France station matched to Issé, Soudan, 18 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 SOUDAN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Issé →
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.