Ice rarely forms: Castillon-Debats sees fewer frosts than 85% of mainland French towns
Peak summer warmth arrives in July, with afternoons near 27.3°C. Expect the heaviest rain in November and the lightest in July. Warm days come often: about 86 a year reach 25°C, more than in 77% of mainland French towns. Homes need heating from November to February, the months averaging under 10°C.
Figures from Météo-France’s Lupiac station, 6.5 km south-west.
A year in Castillon-Debats at a glance
Each month’s typical high and low in °C, at the Lupiac station.
What a year in Castillon-Debats feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Lupiac.
About 880 mm of rain a year
November is the wettest month and July the driest. About 28 days a year bring 10 mm or more. The wettest of 11 towns of 2,500+ in Gers.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Auch
24 frosts and 86 days of 25°C a year
On about 24 nights a year the air drops to 0°C or below, and on about 2 days it stays below freezing all day. About 86 days a year reach 25°C, and 29 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Lupiac: 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 Lupiac
Lupiac is 6.5 km south-west of Castillon-Debats. Every figure on this page is the station’s, not a measurement in Castillon-Debats itself.
| Station (Météo-France number) | Lupiac (32219001) |
| Distance from the town | 6.5 km south-west |
| Station altitude | 245 m |
| Town altitude (its center) | 193 m |
| Period | 1991–2020 |
| Sunshine measured at | Auch, 31 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 Castillon-Debats 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 Gers.
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 |
|---|---|---|---|---|
| Castillon-Debats | Lupiac | 27.3°C | 2.9°C | 880 mm |
| Vic-Fezensac 6.9 km | Beaucaire | 28.2°C 0.9°C warmer | 2.3°C 0.6°C colder | 776 mm |
| Eauze 17 km | Parleboscq | 27.4°C about the same | 2.1°C 0.8°C colder | 874 mm |
| Condom 28 km | Beaucaire | 28.2°C 0.9°C warmer | 2.3°C 0.6°C colder | 776 mm |
| Mirande 28 km | Mirande | 27.8°C 0.5°C warmer | 1.9°C 1°C colder | 819 mm |
Castillon-Debats weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Lupiac station; sunshine at Auch.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 9.8°C | 2.9°C | 6.4°C | 83 mm | 89 |
| February | 11.4°C | 3.0°C | 7.2°C | 65 mm | 115 |
| March | 15.1°C | 5.1°C | 10.1°C | 69 mm | 168 |
| April | 17.6°C | 7.1°C | 12.3°C | 86 mm | 180 |
| May | 21.4°C | 10.6°C | 16.0°C | 87 mm | 201 |
| June | 25.0°C | 13.9°C | 19.4°C | 71 mm | 213 |
| July | 27.3°C | 15.7°C | 21.5°C | 54 mm | 240 |
| August | 27.8°C | 15.7°C | 21.7°C | 59 mm | 231 |
| September | 24.5°C | 13.0°C | 18.7°C | 64 mm | 203 |
| October | 19.7°C | 10.4°C | 15.0°C | 69 mm | 152 |
| November | 13.5°C | 6.1°C | 9.8°C | 92 mm | 99 |
| December | 10.6°C | 3.6°C | 7.1°C | 80 mm | 85 |
| Year | 18.6°C | 8.9°C | 13.8°C | 880 mm | 1,976 |
Where Castillon-Debats’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Lupiac, 6.5 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, Auch, 31 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 Gers.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Castillon-Debats’s climate
How warm does Castillon-Debats get in summer?
August is the warmest month, with average highs of 27.8°C. About 86 days a year reach 25°C, more than 77% of mainland French towns, and about 29 reach 30°C.
How cold does Castillon-Debats get in winter?
January nights average 2.9°C. The air drops to 0°C or below on about 24 nights a year, and about 2 days a year stay below freezing all day.
How much rain does Castillon-Debats get?
About 880 mm a year, more than 75% of mainland French towns. November is the wettest month (92 mm) and July the driest (54 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Auch (31 km away), averages 1,976 hours of sunshine a year.
Are these figures for Castillon-Debats itself?
No: they are the normals of the Météo-France station matched to Castillon-Debats, Lupiac, 6.5 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 LUPIAC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Castillon-Debats →
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.