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.

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• January
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For a detailed overview over the year and the best time to visit Switzerland, check out our Rapperswil-Jona's climate page.

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).

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.

Swimming

6/10

Camping

3/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Rapperswil-Jona's climate page.

More climate data for Rapperswil-Jona

Temperature Rainfall Sunshine Humidity

See the full Rapperswil-Jona climate overview or explore weather in Switzerland.