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Hourly Forecast
Daylight Hours
07:19
Sunrise
19:14
Sunset
Moon
Waxing Gibbous
17:43
Moonrise
02:04
Moonset
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View stargazing scoreWeather in Rapperswil today, September 22, 2026
Rapperswil starts September 22, 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.
Expect highs of 21°C and cooler readings close to 10°C. Moisture in the air spans 35%-80%, with the highest values around 23:00. Expect gentle winds, highest near 18:00 at 2.7 km/h.
Expect a more open afternoon, with limited cloud around 2% by 17:00. Residual damp risk should be lower than earlier. Visibility stays generally good near 41.8 km on average, though it can drop toward 34.3 km in thicker cloud or showers. Sunrise is at 07:19 and sunset at 19:14, giving 11 hours 54 minutes of sunlight today.
Overall, Rapperswil on September 22, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 21°C.
Frequently asked questions about weather in Rapperswil
How warm does it get in Rapperswil?
The warmest month in Rapperswil is July, with average high temperatures of 23°C. The average temperature during this period is around 18°C.
How cold does it get in Rapperswil?
The coldest month in Rapperswil is January, with average low temperatures of -2°C. The average temperature during this period is around 0°C.
What is the wettest time of year in Rapperswil?
The wettest month in Rapperswil is May, with an average of 173mm of precipitation.
What is the driest time of year in Rapperswil?
The driest month in Rapperswil is February, with an average of 90mm of precipitation.
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