Irais is among the driest of mainland French towns: 584 mm of rain a year
January nights here settle around 2.1°C. About 51 nights a year bring a frost, more than in 72% of mainland French towns. Expect the heaviest rain in October and the lightest in August. An umbrella earns its place on about 106 days a year with 1 mm of rain or more.
Figures from Météo-France’s Martaizé station, 9.7 km north-east.
A year in Irais at a glance
Each month’s typical high and low in °C, at the Martaizé station.
What a year in Irais feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Martaizé.
About 584 mm of rain a year
October is the wettest month and August the driest. About 16 days a year bring 10 mm or more. 23rd wettest of 24 towns of 2,500+ in Deux-Sèvres.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Loudun
A frosty town: 51 frosts and 69 days of 25°C a year
On about 51 nights a year the air drops to 0°C or below, and on about 3 days it stays below freezing all day. About 69 days a year reach 25°C, and 19 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Martaizé: 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 Martaizé
Martaizé is 9.7 km north-east of Irais. Every figure on this page is the station’s, not a measurement in Irais itself.
| Station (Météo-France number) | Martaizé (86149001) |
| Distance from the town | 9.7 km north-east |
| Station altitude | 61 m |
| Town altitude (its center) | 97 m |
| Period | 1993–2016 (the station’s own record) |
| Sunshine measured at | Loudun, 23 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 Irais 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 Deux-Sèvres.
Nearby towns’ climate
The nearest towns of 2,500+ within 29 km, each with its own matched station.
| Town | Station | July high | January low | Rain a year |
|---|---|---|---|---|
| Irais | Martaizé | 26.8°C | 2.1°C | 584 mm |
| Airvault 7.2 km | Glénay | 27.1°C about the same | 2.5°C about the same | 648 mm |
| Thouars 15 km | Thouars-Stna | 27.5°C 0.7°C warmer | 2.9°C 0.8°C milder | 576 mm |
| Loudun 20 km | Loudun | 26.0°C 0.8°C cooler | 2.7°C 0.6°C milder | 632 mm |
| Loretz-d'Argenton 24 km | Thouars-Stna | 27.5°C 0.7°C warmer | 2.9°C 0.8°C milder | 576 mm |
| Châtillon-sur-Thouet 27 km | Parthenay | 26.6°C about the same | 2.5°C about the same | 831 mm |
| Argentonnay 28 km | Nueil-les-Aubiers | 25.8°C 1°C cooler | 2.3°C about the same | 812 mm |
Irais weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Martaizé station; sunshine at Loudun.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 8.6°C | 2.1°C | 5.3°C | 51 mm | 70 |
| February | 10.1°C | 1.6°C | 5.9°C | 40 mm | 105 |
| March | 14.0°C | 2.6°C | 8.3°C | 40 mm | 156 |
| April | 17.0°C | 4.6°C | 10.8°C | 47 mm | 198 |
| May | 20.8°C | 8.3°C | 14.5°C | 49 mm | 229 |
| June | 24.8°C | 11.3°C | 18.0°C | 50 mm | 247 |
| July | 26.8°C | 12.9°C | 19.8°C | 42 mm | 260 |
| August | 26.7°C | 12.7°C | 19.7°C | 38 mm | 237 |
| September | 23.0°C | 9.6°C | 16.3°C | 45 mm | 206 |
| October | 18.3°C | 8.3°C | 13.3°C | 64 mm | 130 |
| November | 12.4°C | 4.6°C | 8.5°C | 60 mm | 87 |
| December | 9.0°C | 2.4°C | 5.7°C | 59 mm | 78 |
| Year | 17.6°C | 6.8°C | 12.2°C | 584 mm | 2,003 |
Where Irais’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Martaizé, 9.7 km away: statistics for 1991–2020 (the station’s own years, 1993–2016, 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, Loudun, 23 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 Deux-Sèvres.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Irais’s climate
How warm does Irais get in summer?
July is the warmest month, with average highs of 26.8°C. About 69 days a year reach 25°C, more than 61% of mainland French towns, and about 19 reach 30°C.
How cold does Irais get in winter?
February nights average 1.6°C. The air drops to 0°C or below on about 51 nights a year, and about 3 days a year stay below freezing all day.
How much rain does Irais get?
About 584 mm a year, less than 97% of mainland French towns. October is the wettest month (64 mm) and August the driest (38 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Loudun (23 km away), averages 2,003 hours of sunshine a year.
Are these figures for Irais itself?
No: they are the normals of the Météo-France station matched to Irais, Martaizé, 9.7 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 MARTAIZE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Irais →
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.