Ailhon sits near the top of mainland French towns for rain, with 1,900 mm a year
In January the night’s low is typically 1.0°C. The gap between a January night and a July afternoon is 27°C. Its July heat outdoes that of 76% of mainland French towns. Comfortable outdoor weather, highs of 17–25°C, belongs to May, June, September and October.
Figures from Météo-France’s Barnas Rad station, 16 km north-west.
A year in Ailhon at a glance
Each month’s typical high and low in °C, at the Barnas Rad station.
What a year in Ailhon feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Barnas Rad.
About 1,900 mm of rain a year
November is the wettest month and July the driest. About 39 days a year bring 10 mm or more. The wettest of 22 towns of 2,500+ in Ardèche.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Lanas Syn
40 frosts and 77 days of 25°C a year
On about 40 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 77 days a year reach 25°C, and 26 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Barnas Rad: 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 Barnas Rad
Barnas Rad is 16 km north-west of Ailhon. Every figure on this page is the station’s, not a measurement in Ailhon itself.
| Station (Météo-France number) | Barnas Rad (07025001) |
| Distance from the town | 16 km north-west |
| Station altitude | 480 m |
| Town altitude (its center) | 441 m |
| Period | 1991–2020 |
| Nearest station of any kind | 6.1 km |
| Sunshine measured at | Lanas Syn, 7.5 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 Ailhon 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 Ardèche.
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 |
|---|---|---|---|---|
| Ailhon | Barnas Rad | 27.8°C | 1.0°C | 1,900 mm |
| Saint-Étienne-de-Fontbellon 3.6 km | Aubenas Sa | 30.4°C 2.6°C warmer | 1.0°C about the same | 1,061 mm |
| Aubenas 4.9 km | Vals-les-Bains | 29.7°C 1.9°C warmer | 1.6°C 0.6°C milder | 1,250 mm |
| Vals-les-Bains 7.6 km | Vals-les-Bains | 29.7°C 1.9°C warmer | 1.6°C 0.6°C milder | 1,250 mm |
| Villeneuve-de-Berg 14 km | Mirabel Sa | 29.5°C 1.7°C warmer | 1.2°C about the same | 998 mm |
| Privas 25 km | Chomérac Sa | 29.0°C 1.2°C warmer | 1.1°C about the same | 1,105 mm |
| Les Vans 27 km | Grospierres | 31.9°C 4.1°C warmer | 0.1°C 0.9°C colder | 1,095 mm |
Ailhon weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Barnas Rad station; sunshine at Lanas Syn.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 7.6°C | 1.0°C | 4.3°C | 153 mm | 131 |
| February | 9.3°C | 1.1°C | 5.2°C | 99 mm | 153 |
| March | 13.6°C | 3.8°C | 8.7°C | 105 mm | 208 |
| April | 16.4°C | 6.2°C | 11.3°C | 155 mm | 208 |
| May | 20.4°C | 9.2°C | 14.8°C | 140 mm | 246 |
| June | 24.9°C | 12.6°C | 18.8°C | 88 mm | 286 |
| July | 27.8°C | 14.8°C | 21.3°C | 68 mm | 314 |
| August | 27.5°C | 14.5°C | 21.0°C | 78 mm | 284 |
| September | 22.2°C | 11.3°C | 16.8°C | 199 mm | 220 |
| October | 17.0°C | 8.5°C | 12.8°C | 287 mm | 154 |
| November | 11.5°C | 4.6°C | 8.1°C | 332 mm | 125 |
| December | 7.7°C | 1.7°C | 4.7°C | 196 mm | 120 |
| Year | 17.2°C | 7.4°C | 12.3°C | 1,900 mm | 2,447 |
Where Ailhon’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Barnas Rad, 16 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, Lanas Syn, 7.5 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 Ardèche.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Ailhon’s climate
How warm does Ailhon get in summer?
July is the warmest month, with average highs of 27.8°C. About 77 days a year reach 25°C, more than 70% of mainland French towns, and about 26 reach 30°C.
How cold does Ailhon get in winter?
January nights average 1.0°C. The air drops to 0°C or below on about 40 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Ailhon get?
About 1,900 mm a year, more than almost every mainland French town. November is the wettest month (332 mm) and July the driest (68 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Lanas Syn (7.5 km away), averages 2,447 hours of sunshine a year.
Are these figures for Ailhon itself?
No: they are the normals of the Météo-France station matched to Ailhon, Barnas Rad, 16 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 BARNAS RAD, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Ailhon →
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.