Few mainland French towns get more rain than Ilhet: 1,220 mm a year
The coldest hours of a January night bottom out at 0.8°C on average. Summers stay cool: July afternoons here are cooler than in 85% of mainland French towns. The rainiest month is November; the driest is August. Plan time outside from May to October, when highs sit at 18–24°C.
These are the figures of Météo-France’s Lannemezan station, 17 km north.
A year in Ilhet at a glance
Each month’s typical high and low in °C, at the Lannemezan station.
What a year in Ilhet feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Lannemezan.
About 1,220 mm of rain a year
November is the wettest month and August the driest. About 41 days a year bring 10 mm or more. The wettest of 14 towns of 2,500+ in Hautes-Pyrénées.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Campistrous
44 frosts and 48 days of 25°C a year
On about 44 nights a year the air drops to 0°C or below, and on about 3 days it stays below freezing all day. About 48 days a year reach 25°C, and 9 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Lannemezan: 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 Lannemezan
Lannemezan is 17 km north of Ilhet. Every figure on this page is the station’s, not a measurement in Ilhet itself.
| Station (Météo-France number) | Lannemezan (65258001) |
| Distance from the town | 17 km north |
| Station altitude | 638 m |
| Town altitude (its center) | 653 m |
| Period | 1991–2020 |
| Nearest station of any kind | 11 km |
| Sunshine measured at | Campistrous, 18 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 Ilhet 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 Hautes-Pyrénées.
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 |
|---|---|---|---|---|
| Ilhet | Lannemezan | 23.8°C | 0.8°C | 1,220 mm |
| Lannemezan 17 km | Campistrous | 23.7°C about the same | 1.1°C about the same | 1,140 mm |
| Montréjeau 20 km | Clarac | 26.0°C 2.2°C warmer | 0.1°C 0.7°C colder | 805 mm |
| Bagnères-de-Bigorre 22 km | Campistrous | 23.7°C about the same | 1.1°C about the same | 1,140 mm |
Ilhet weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Lannemezan station; sunshine at Campistrous.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.3°C | 0.8°C | 5.1°C | 113 mm | 108 |
| February | 10.1°C | 1.1°C | 5.6°C | 92 mm | 134 |
| March | 13.3°C | 3.5°C | 8.4°C | 101 mm | 164 |
| April | 15.1°C | 5.3°C | 10.2°C | 122 mm | 168 |
| May | 18.4°C | 8.9°C | 13.6°C | 130 mm | 184 |
| June | 21.9°C | 12.3°C | 17.1°C | 92 mm | 202 |
| July | 23.8°C | 14.1°C | 19.0°C | 83 mm | 210 |
| August | 24.3°C | 14.4°C | 19.4°C | 72 mm | 204 |
| September | 21.3°C | 11.4°C | 16.3°C | 77 mm | 192 |
| October | 17.7°C | 8.4°C | 13.0°C | 90 mm | 160 |
| November | 12.3°C | 3.9°C | 8.1°C | 137 mm | 118 |
| December | 10.2°C | 1.8°C | 6.0°C | 112 mm | 117 |
| Year | 16.5°C | 7.2°C | 11.8°C | 1,220 mm | 1,960 |
Where Ilhet’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Lannemezan, 17 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, Campistrous, 18 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 Hautes-Pyrénées.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Ilhet’s climate
How warm does Ilhet get in summer?
August is the warmest month, with average highs of 24.3°C. About 48 days a year reach 25°C, fewer than 71% of mainland French towns, and about 9 reach 30°C.
How cold does Ilhet get in winter?
January nights average 0.8°C. The air drops to 0°C or below on about 44 nights a year, and about 3 days a year stay below freezing all day.
How much rain does Ilhet get?
About 1,220 mm a year, more than 97% of mainland French towns. November is the wettest month (137 mm) and August the driest (72 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Campistrous (18 km away), averages 1,960 hours of sunshine a year.
Are these figures for Ilhet itself?
No: they are the normals of the Météo-France station matched to Ilhet, Lannemezan, 17 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 LANNEMEZAN, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Ilhet →
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.