Olten Weather in September

September in Olten brings pleasant temperatures around 20°C (68°F) during the day, dropping to 10°C (50°F) at night, with quite a bit of rainfall expected, averaging around 117 mm (4.6 in) for the month.

Rainfall in Olten in September

Looking at the last 30 years, the data shows about 13 days with rain, averaging 117 mm (4.6 in) for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Olten in September

In September, expect pleasant temperatures in Olten, with highs of 20°C (68°F) and lows of 10°C (50°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights cool down to 10°C (50°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Olten in September

The area experiences a moderate amount of sunshine, with approximately 162 hours of sunlight expected. This means a decent mix of sun and overcast.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Olten.

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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 Olten's climate page.

Olten Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 43%  

Precipitation 117 mm (4.6 in)  

Rainy days 13 days  

Humidity 77% *  

Sunshine 162 hours *  

Percentage Sunshine 47% *  

* Data from: Basel, Switzerland (33 KM, 20 Miles).

What to Wear in Olten 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. Prepare for significant rainfall with proper waterproof clothing and shoes. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Olten in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

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 Olten's climate page.

More climate data for Olten

Temperature Rainfall Sunshine Humidity

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