Hardly any mainland French towns wake to more frost than Montseron
Peak summer warmth arrives in July, with afternoons near 26.4°C. By rainfall alone, it ranks wetter than 91% of mainland French towns. The gap between a January night and a July afternoon is 28°C. An umbrella earns its place on about 126 days a year with 1 mm of rain or more.
Figures from Météo-France’s La Bastide de S station, 5.3 km east.
A year in Montseron at a glance
Each month’s typical high and low in °C, at the La Bastide de S station.
What a year in Montseron feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at La Bastide de S.
About 1,091 mm of rain a year
May is the wettest month and July the driest. About 38 days a year bring 10 mm or more. 3rd wettest of 11 towns of 2,500+ in Ariège.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Saint-Girons
A frosty town: 85 frosts and 79 days of 25°C a year
On about 85 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 79 days a year reach 25°C, and 26 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at La Bastide de S: 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 La Bastide de S
La Bastide de S is 5.3 km east of Montseron. Every figure on this page is the station’s, not a measurement in Montseron itself.
| Station (Météo-France number) | La Bastide de S (09042003) |
| Distance from the town | 5.3 km east |
| Station altitude | 420 m |
| Town altitude (its center) | 474 m |
| Period | 1991–2020 |
| Sunshine measured at | Saint-Girons, 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 Montseron 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 Ariège.
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 |
|---|---|---|---|---|
| Montseron | La Bastide de S | 26.4°C | −1.1°C | 1,091 mm |
| Saint-Girons 15 km | Saint-Girons | 25.5°C 0.9°C cooler | 0.5°C 1.6°C milder | 973 mm |
| Montesquieu-Volvestre 22 km | Saint-Ybars | 27.1°C 0.7°C warmer | 2.7°C 3.8°C milder | 797 mm |
| Foix 24 km | same station | 26.4°C about the same | −1.1°C about the same | 1,091 mm |
| Varilhes 25 km | Saint-Ybars | 27.1°C 0.7°C warmer | 2.7°C 3.8°C milder | 797 mm |
| Saint-Jean-du-Falga 26 km | Saint-Ybars | 27.1°C 0.7°C warmer | 2.7°C 3.8°C milder | 797 mm |
| Pamiers 26 km | Saint-Ybars | 27.1°C 0.7°C warmer | 2.7°C 3.8°C milder | 797 mm |
Montseron weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the La Bastide de S station; sunshine at Saint-Girons.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 10.3°C | −1.1°C | 4.6°C | 91 mm | 116 |
| February | 11.4°C | −0.6°C | 5.4°C | 79 mm | 129 |
| March | 14.7°C | 1.6°C | 8.2°C | 76 mm | 169 |
| April | 17.1°C | 4.0°C | 10.5°C | 111 mm | 171 |
| May | 20.5°C | 7.9°C | 14.2°C | 120 mm | 183 |
| June | 24.0°C | 11.5°C | 17.8°C | 96 mm | 193 |
| July | 26.4°C | 13.4°C | 19.9°C | 72 mm | 211 |
| August | 26.7°C | 13.1°C | 19.9°C | 79 mm | 209 |
| September | 23.4°C | 9.5°C | 16.5°C | 80 mm | 193 |
| October | 19.5°C | 6.6°C | 13.0°C | 90 mm | 157 |
| November | 13.7°C | 2.1°C | 7.9°C | 110 mm | 119 |
| December | 10.9°C | −0.6°C | 5.1°C | 88 mm | 113 |
| Year | 18.2°C | 5.6°C | 11.9°C | 1,091 mm | 1,964 |
Where Montseron’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for La Bastide de S, 5.3 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, Saint-Girons, 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 Ariège.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Montseron’s climate
How warm does Montseron get in summer?
August is the warmest month, with average highs of 26.7°C. About 79 days a year reach 25°C, more than 71% of mainland French towns, and about 26 reach 30°C.
How cold does Montseron get in winter?
January nights average −1.1°C. The air drops to 0°C or below on about 85 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Montseron get?
About 1,091 mm a year, more than 91% of mainland French towns. May is the wettest month (120 mm) and July the driest (72 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Saint-Girons (18 km away), averages 1,964 hours of sunshine a year.
Are these figures for Montseron itself?
No: they are the normals of the Météo-France station matched to Montseron, La Bastide de S, 5.3 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 LA BASTIDE DE S, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Montseron →
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.