Grimentz Weather in September

Thinking of visiting Grimentz in September? Expect moderate temperatures reaching 13°C (55°F) during the day, dropping to 2°C (36°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Grimentz in September

Typically around 15 days of rainfall are expected, averaging 118 mm (4.6 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Grimentz in September

Daytime highs in Grimentz in September reach 13°C (55°F), with nights around 2°C (36°F). The difference between afternoon and evening temperatures is usually noticeable. At 2°C (36°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Grimentz in September

The city usually sees around 210 hours of sunlight, indicating many sunny days despite the cool temperatures, making it a good month for sightseeing.

Wind Speed in Grimentz in September

Average wind conditions reach 2 m/s (4 knots) in September. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Grimentz. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Grimentz Temperature in September

Min Temperature 2°C (36°F)  

Max Temperature 13°C (55°F)  

Chance of Rain 49%  

Precipitation 118 mm (4.6 in)  

Rainy days 15 days  

Humidity 71% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 210 hours *  

Percentage Sunshine 65% *  

* Data from: Sion, Switzerland (19 KM, 11 Miles).

What to Wear in Grimentz in September

Pack for changing conditions in Grimentz in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Grimentz in September

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

Swimming

4/10

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 Grimentz's climate page.

More climate data for Grimentz

Temperature Rainfall Sunshine Humidity Wind Speed

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