Twann Weather in September

September in Twann typically sees daytime highs of 20°C (68°F) and nighttime lows of 10°C (50°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in Twann in September

The climate data from previous years indicates about 13 days of rain, averaging 115 mm (4.5 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Twann in September

Expect highs of 20°C (68°F) in Twann in September, with nights dropping to around 10°C (50°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 10°C (50°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Twann in September

You can expect a moderate amount of sunlight, with approximately 176 hours. This means a pleasant mix of sun and overcast.

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

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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 Twann's climate page.

Twann Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 43%  

Precipitation 115 mm (4.5 in)  

Rainy days 13 days  

Humidity 79% *  

Sunshine 176 hours *  

Percentage Sunshine 49% *  

* Data from: Bern, Switzerland (27 KM, 16 Miles).

What to Wear in Twann in September

For Twann in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Twann 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

3/10

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 Twann's climate page.

More climate data for Twann

Temperature Rainfall Sunshine Humidity

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