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Hourly Forecast
Daylight Hours
07:21
Sunrise
19:05
Sunset
Moon
Waxing Gibbous
18:36
Moonrise
05:37
Moonset
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View stargazing scoreWeather in Altnau today, September 25, 2026
Altnau starts September 25, 2026 under largely sunny skies, with bright spells setting the tone from the outset. Outdoor plans should enjoy long stretches of open sky as the day unfolds. The first half of the day looks overcast, as cloud amounts reach about 96% around 08:00. Brighter weather, if it comes, waits until later.
Temperatures climb from an overnight low near 11°C toward a daytime high of about 19°C. Expect humidity between 51% and 94%, most humid near 08:00. Expect gentle winds, highest near 21:00 at 1.3 km/h.
Later hours favour clearer intervals, as cloud stays near 9% around 18:00. The afternoon is the better half for outdoor time. Horizontal visibility sits around 34.5 km, briefly nearer 9.0 km. Daylight runs from 07:21 to 19:05, lasting 11 hours 44 minutes of sunlight today.
In short, September 25, 2026 looks like a fine day in Altnau for being outside, peaking around 19°C.
Frequently asked questions about weather in Altnau
How warm does it get in Altnau?
The warmest month in Altnau is July, with average high temperatures of 24°C. The average temperature during this period is around 19°C.
How cold does it get in Altnau?
The coldest month in Altnau is January, with average low temperatures of -2°C. The average temperature during this period is around 1°C.
What is the wettest time of year in Altnau?
The wettest month in Altnau is August, with an average of 193mm of precipitation.
What is the driest time of year in Altnau?
The driest month in Altnau is February, with an average of 80mm of precipitation.
