Altstätten Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Altstätten.
Climate overview of Altstätten
The climate in Altstätten, St.Gallen Canton, Switzerland, is marked by large temperature swings across the seasons, ranging from 23°C (73°F) in July to 4°C (39°F) in January.
The city has a wet climate, receiving around 1699 mm (67 in) of rain/snowfall per year. Despite the high annual total, it has a distinct rainy season from May to August, with warm summers and cold winters. June is the wettest month. Sunshine peaks in July, when the city sees around 7.6 hours of sunshine per day.
Altstätten Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Altstätten - and find the best time to visit.
Monthly Temperature in Altstätten
In Altstätten, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 23°C (73°F) in July to a chilly 4°C (39°F) in January.
Nighttime temperatures range from 13°C (55°F) in July to -4°C (25°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Altstätten
Altstätten experiences significant rain/snowfall throughout the year, averaging 1699 mm (67 in) of precipitation annually. The amount of precipitation varies moderately throughout the year. The wettest month, June, sees around 198 mm (7.8 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, January, still receives a respectable 106 mm (4.2 in) of snow/rainfall. For more details, please visit our Altstätten Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Altstätten
In Altstätten, summer days are longer and more sunny, with daily sunshine hours peaking at 7.6 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.6 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Altstätten by Month
The relative humidity is high throughout the year in Altstätten.
The city experiences its highest humidity in November, reaching 82%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Altstätten
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: A distinct rainy season from May to August, with warm summers and cold winters
- Coldest conditions: January, with freezing nights around -4°C (25°F).
Frequently asked questions about the climate in Altstätten
What is the best time to visit Altstätten?
May, June, July, August and September typically offer the most optimal weather in Altstätten. In contrast, January, February, March, November and December tend to have less optimal conditions. Altstätten has a distinct rainy season from May to August, with warm summers and cold winters.
What temperatures can I expect in Altstätten?
Daytime highs range from 4°C (39°F) in January to 23°C (73°F) in July. Nighttime lows range from -4°C (25°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Altstätten get?
Annual rainfall is around 1699 mm (67 in). June is the wettest month with 198 mm (7.8 in), while January is the driest with 106 mm (4.2 in).
How sunny is Altstätten?
Altstätten receives around 1,632 hours of sunshine per year. July is the sunniest month with 229 hours, while December is the cloudiest with just 48 hours.
Altstätten 3-Day Forecast
Altstätten on the map
Altstätten is highlighted - select any city to see its climate.
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