Isone Weather in September

September in Isone averages 19°C (66°F) during the day and 10°C (50°F) at night. September is part of the rainy season, with around 172 mm (6.8 in) of rainfall and frequent showers.

Rainfall in Isone in September

Isone is in the rainy season in September, with rain on around 13 days and an average of 172 mm (6.8 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.

Temperature in Isone in September

In September, expect pleasant temperatures in Isone, with highs of 19°C (66°F) and lows of 10°C (50°F) at night. Conditions are often most pleasant around the middle of the day. With lows of 10°C (50°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Isone in September

With approximately 198 hours of sunshine, the days are filled with clear skies during the day. Rain typically falls in the afternoon or evening, keeping mornings and early parts of the day sunny.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Isone.

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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 Isone's climate page.

Isone Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 19°C (66°F)  

Chance of Rain 43%  

Precipitation 172 mm (6.8 in)  

Rainy days 13 days  

Humidity 70% *  

Sunshine 198 hours *  

Percentage Sunshine 57% *  

* Data from: Locarno, Switzerland (15 KM, 9 Miles).

What to Wear in Isone 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! And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Isone in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Camping

6/10

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 Isone's climate page.

More climate data for Isone

Temperature Rainfall Sunshine Humidity

See the full Isone climate overview or explore weather in Switzerland.