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Rapperswil-Jona Weather in September
Rapperswil-Jona in September sees pleasant daytime temperatures of 18°C (64°F) and nighttime lows of 9°C (48°F). Rainfall is fairly high this month at around 152 mm (6 in), so pack a rain jacket to stay dry.
Rainfall in Rapperswil-Jona in September
Typically, about 13 days will experience rainfall, with an average of 152 mm (6 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Rapperswil-Jona in September
Daytime highs in Rapperswil-Jona in September reach 18°C (64°F), with nights around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Rapperswil-Jona in September
You can expect a moderate amount of sunlight, with approximately 166 hours. This means a pleasant mix of sun and overcast.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Rapperswil-Jona.
Rapperswil-Jona Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
18°C (64°F)
Chance of Rain
44%
Precipitation
152 mm (6 in)
Rainy days
13 days
Humidity
78% *
Sunshine
166 hours *
Percentage Sunshine
48% *
* Data from: Zürich, Switzerland (25 KM, 15 Miles).
Rapperswil-Jona Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rapperswil-Jona - and find the best time to visit.
Best Places in Switzerland in September
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Rapperswil-Jona in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Rapperswil-Jona in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Camping3/10
Rapperswil-Jona 3-Day Forecast
More climate data for Rapperswil-Jona
Temperature Rainfall Sunshine Humidity
See the full Rapperswil-Jona climate overview or explore weather in Switzerland.
Popular in September
Where to go in September - average daytime high across popular destinations.
Zürich
20°C (68°F) Crans-Montana15°C (59°F) Engelberg
15°C (59°F) Nendaz15°C (59°F) Saas-Fee12°C (54°F) Davos13°C (55°F) Grindelwald13°C (55°F) Zermatt11°C (52°F) Bucket list
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The 5 most scenic train journeys in Switzerland
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