Troistorrents Weather in September

Thinking of visiting Troistorrents in September? Expect moderate temperatures reaching 16°C (61°F) during the day, dropping to 5°C (41°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Troistorrents in September

Past climate data indicates that roughly 13 days will see rain, totalling around 145 mm (5.7 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 Troistorrents in September

Daytime temperatures in Troistorrents reach 16°C (61°F) in September, dropping to 5°C (41°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With lows around 5°C (41°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Troistorrents in September

Expect a lot of sunshine this month, with about 210 hours of sun. These sunny conditions add to the overall experience.

Should you favor a climate that's both dry and comfortably warm, August typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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

Troistorrents Temperature in September

Min Temperature 5°C (41°F)  

Max Temperature 16°C (61°F)  

Chance of Rain 44%  

Precipitation 145 mm (5.7 in)  

Rainy days 13 days  

Humidity 71% *  

Sunshine 210 hours *  

Percentage Sunshine 65% *  

* Data from: Sion, Switzerland (32 KM, 19 Miles).

What to Wear in Troistorrents in September

For Troistorrents 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Troistorrents in September

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

Cycling

5/10

Walking

5/10

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 Troistorrents's climate page.

More climate data for Troistorrents

Temperature Rainfall Sunshine Humidity

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