Susten Weather in September

Susten in September sees moderate daytime temperatures of 14°C (57°F) and nighttime lows of 3°C (37°F). Rainfall is fairly high this month at around 122 mm (4.8 in), so pack a rain jacket to stay dry.

Rainfall in Susten in September

Rain is expected on roughly 15 days, totalling around 122 mm (4.8 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 Susten in September

Susten in September gets highs of 14°C (57°F) during the day and drops to 3°C (37°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Susten in September

The month enjoys around 210 hours of sunshine, creating mostly sunny days despite the cool temperatures.

If your ideal day consists of dry skies and pleasant temperatures, July and August typically offer the best circumstances for Susten.

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 Susten's climate page.

Susten Temperature in September

Min Temperature 3°C (37°F)  

Max Temperature 14°C (57°F)  

Chance of Rain 49%  

Precipitation 122 mm (4.8 in)  

Rainy days 15 days  

Humidity 71% *  

Sunshine 210 hours *  

Percentage Sunshine 65% *  

* Data from: Sion, Switzerland (25 KM, 15 Miles).

What to Wear in Susten in September

The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. 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 Susten 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 Susten's climate page.

More climate data for Susten

Temperature Rainfall Sunshine Humidity

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