Few mainland French towns get more rain than Geishouse: 2,282 mm a year
January nights here settle around −1.1°C. The rainiest month is December; the driest is June. Winter nights are cold: in January they are colder than in 94% of mainland French towns. Gritters and ice scrapers earn their keep on roughly 69 nights a year below 0°C.
Figures from Météo-France’s Sewen - Lac Alfeld station, 15 km south-west.
A year in Geishouse at a glance
Each month’s typical high and low in °C, at the Sewen - Lac Alfeld station.
What a year in Geishouse feels like
Typical highs and lows by season and by month, from Météo-France’s 1991–2020 normals at Sewen - Lac Alfeld.
About 2,282 mm of rain a year
December is the wettest month and June the driest. About 73 days a year bring 10 mm or more. The wettest of 52 towns of 2,500+ in Haut-Rhin.
Rain by month
Millimeters
A frosty town: 69 frosts and 44 days of 25°C a year
On about 69 nights a year the air drops to 0°C or below, and on about 16 days it stays below freezing all day. About 44 days a year reach 25°C, and 10 reach 30°C.
Day counts are Météo-France’s 1991–2020 normals at Sewen - Lac Alfeld: 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 Sewen - Lac Alfeld
Sewen - Lac Alfeld is 15 km south-west of Geishouse. Every figure on this page is the station’s, not a measurement in Geishouse itself.
| Station (Météo-France number) | Sewen - Lac Alfeld (68307001) |
| Distance from the town | 15 km south-west |
| Station altitude | 620 m |
| Town altitude (its center) | 694 m |
| Period | 1991–2020 |
| Nearest station of any kind | 4.8 km |
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 Geishouse 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 Haut-Rhin.
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 |
|---|---|---|---|---|
| Geishouse | Sewen - Lac Alfeld | 23.8°C | −1.1°C | 2,282 mm |
| Thann 9.2 km | Bits.-lès-Thann | 25.6°C 1.8°C warmer | −1.6°C 0.5°C colder | 1,309 mm |
| Vieux-Thann 10 km | Bits.-lès-Thann | 25.6°C 1.8°C warmer | −1.6°C 0.5°C colder | 1,309 mm |
| Buhl 11 km | Guebwiller | 26.0°C 2.2°C warmer | −0.6°C 0.5°C milder | 920 mm |
| Guebwiller 12 km | Guebwiller | 26.0°C 2.2°C warmer | −0.6°C 0.5°C milder | 920 mm |
| Cernay 12 km | Guebwiller | 26.0°C 2.2°C warmer | −0.6°C 0.5°C milder | 920 mm |
| Soultz-Haut-Rhin 13 km | Guebwiller | 26.0°C 2.2°C warmer | −0.6°C 0.5°C milder | 920 mm |
Geishouse weather by month
Average daily high and low, mean temperature and rain, 1991–2020, at the Sewen - Lac Alfeld station.
| Month | High | Low | Mean | Rain |
|---|---|---|---|---|
| January | 3.8°C | −1.1°C | 1.3°C | 285 mm |
| February | 5.0°C | −1.1°C | 2.0°C | 218 mm |
| March | 9.7°C | 1.9°C | 5.8°C | 215 mm |
| April | 14.0°C | 5.1°C | 9.5°C | 129 mm |
| May | 18.2°C | 8.8°C | 13.5°C | 161 mm |
| June | 22.1°C | 12.3°C | 17.2°C | 121 mm |
| July | 23.8°C | 14.1°C | 18.9°C | 132 mm |
| August | 24.1°C | 14.2°C | 19.2°C | 135 mm |
| September | 19.0°C | 10.7°C | 14.8°C | 140 mm |
| October | 13.7°C | 7.0°C | 10.4°C | 203 mm |
| November | 7.9°C | 2.7°C | 5.3°C | 220 mm |
| December | 4.7°C | 0.0°C | 2.3°C | 324 mm |
| Year | 13.8°C | 6.2°C | 10.0°C | 2,282 mm |
Where Geishouse’s numbers come from
Averages over 30 years, not a forecast.
- Temperature, rain and day counts: Météo-France’s fiche climatologique for Sewen - Lac Alfeld, 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.
- Comparisons: every town of 2,500 or more in mainland France, read the same way; the dots are the towns of 2,500+ in Haut-Rhin.
Météo-France fiches climatologiques · IGN RGE ALTI®. Licence Ouverte 2.0.
Questions about Geishouse’s climate
How warm does Geishouse get in summer?
August is the warmest month, with average highs of 24.1°C. About 44 days a year reach 25°C, fewer than 76% of mainland French towns, and about 10 reach 30°C.
How cold does Geishouse get in winter?
January nights average −1.1°C. The air drops to 0°C or below on about 69 nights a year, and about 16 days a year stay below freezing all day.
How much rain does Geishouse get?
About 2,282 mm a year, more than almost every mainland French town. December is the wettest month (324 mm) and June the driest (121 mm).
Are these figures for Geishouse itself?
No: they are the normals of the Météo-France station matched to Geishouse, Sewen - Lac Alfeld, 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 SEWEN - LAC ALFELD_SAPC, edited 15/10/2026); altitude: IGN, RGE ALTI®. Licence Ouverte 2.0. Today’s forecast for Geishouse →
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.