Few mainland French towns have milder winter nights than Gastes
In July the day’s top temperature is typically 25.0°C. Seasons differ by 21°C, from the coldest nights to the warmest afternoons. Summers stay cool: July afternoons here are cooler than in 72% of mainland French towns. The outdoor season runs from May to October, with highs of 20–26°C.
These are the figures of Météo-France’s Biscarrosse station, 15 km north-west.
A year in Gastes at a glance
Each month’s typical high and low in °C, at the Biscarrosse station.
What a year in Gastes feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Biscarrosse.
About 852 mm of rain a year
November is the wettest month and July the driest. About 26 days a year bring 10 mm or more. 33rd wettest of 35 towns of 2,500+ in Landes.
Rain by month
Millimeters
Sunshine by month
Hours of sunshine at Biscarrosse
13 frosts and 53 days of 25°C a year
On about 13 nights a year the air drops to 0°C or below; days that stay below freezing are rare. About 53 days a year reach 25°C, and 12 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Biscarrosse: 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 Biscarrosse
Biscarrosse is 15 km north-west of Gastes. Every figure on this page is the station’s, not a measurement in Gastes itself.
| Station (Météo-France number) | Biscarrosse (40046001) |
| Distance from the town | 15 km north-west |
| Station altitude | 35 m |
| Town altitude (its center) | 27 m |
| Period | 1991–2020 |
| Sunshine measured at | the same station |
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 Gastes 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 Landes.
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 |
|---|---|---|---|---|
| Gastes | Biscarrosse | 25.0°C | 5.0°C | 852 mm |
| Parentis-en-Born 6.8 km | same station | 25.0°C about the same | 5.0°C about the same | 852 mm |
| Biscarrosse 9.4 km | same station | 25.0°C about the same | 5.0°C about the same | 852 mm |
| Mimizan 15 km | same station | 25.0°C about the same | 5.0°C about the same | 852 mm |
| Sanguinet 19 km | Cazaux | 26.2°C 1.2°C warmer | 2.9°C 2.1°C colder | 948 mm |
| Labouheyre 22 km | Sabres | 27.2°C 2.2°C warmer | 2.5°C 2.5°C colder | 1,101 mm |
Gastes weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Biscarrosse station.
| Month | High | Low | Mean | Rain | Sun (hours) |
|---|---|---|---|---|---|
| January | 11.4°C | 5.0°C | 8.2°C | 87 mm | 97 |
| February | 12.4°C | 5.0°C | 8.7°C | 65 mm | 120 |
| March | 15.1°C | 7.1°C | 11.1°C | 58 mm | 180 |
| April | 16.9°C | 9.1°C | 13.0°C | 66 mm | 198 |
| May | 20.3°C | 12.4°C | 16.3°C | 64 mm | 232 |
| June | 23.1°C | 15.3°C | 19.2°C | 61 mm | 243 |
| July | 25.0°C | 17.4°C | 21.2°C | 41 mm | 261 |
| August | 25.6°C | 17.5°C | 21.5°C | 56 mm | 252 |
| September | 23.5°C | 14.9°C | 19.2°C | 73 mm | 212 |
| October | 19.9°C | 12.3°C | 16.1°C | 78 mm | 150 |
| November | 15.0°C | 8.2°C | 11.6°C | 115 mm | 104 |
| December | 12.0°C | 5.8°C | 8.9°C | 89 mm | 89 |
| Year | 18.4°C | 10.8°C | 14.6°C | 852 mm | 2,137 |
Where Gastes’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Biscarrosse, 15 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, Biscarrosse, 15 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 Landes.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Gastes’s climate
How warm does Gastes get in summer?
August is the warmest month, with average highs of 25.6°C. About 53 days a year reach 25°C, fewer than 65% of mainland French towns, and about 12 reach 30°C.
How cold does Gastes get in winter?
January nights average 5.0°C. The air drops to 0°C or below on about 13 nights a year, and about under 1 days a year stay below freezing all day.
How much rain does Gastes get?
About 852 mm a year, more than 70% of mainland French towns. November is the wettest month (115 mm) and July the driest (41 mm).
How sunny is it?
The nearest Météo-France station that records sunshine, Biscarrosse (15 km away), averages 2,137 hours of sunshine a year.
Are these figures for Gastes itself?
No: they are the normals of the Météo-France station matched to Gastes, Biscarrosse, 15 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 BISCARROSSE, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Gastes →
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.