Monthey Weather in September

During September, Monthey experiences moderate daytime temperatures of 16°C (61°F) and cooler nights around 5°C (41°F). Expect quite a bit of rainfall. Around 148 mm (5.8 in) is typical.

Rainfall in Monthey in September

This month experiences about 13 days of rain according to historical data, averaging 148 mm (5.8 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Monthey in September

September in Monthey sees highs of 16°C (61°F) and lows of 5°C (41°F) overnight. Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Monthey in September

With approximately 210 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If your ideal day consists of dry skies and pleasant temperatures, August typically offers the best circumstances for Monthey.

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• January
• February
• March
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• May
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• July
• August

• September
• October
• November
• December

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

Monthey Temperature in September

Min Temperature 5°C (41°F)  

Max Temperature 16°C (61°F)  

Chance of Rain 44%  

Precipitation 148 mm (5.8 in)  

Rainy days 13 days  

Humidity 71% *  

Sunshine 210 hours *  

Percentage Sunshine 65% *  

* Data from: Sion, Switzerland (29 KM, 18 Miles).

What to Wear in Monthey in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Monthey 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 Monthey's climate page.

More climate data for Monthey

Temperature Rainfall Sunshine Humidity

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