Weather in September 2025

Sarnen weather in September 2025

The weather in Sarnen in September is very cold with temperatures between 4°C and 13°C, warm clothes are a must.

You can expect rain for roughly half of the month of September in Sarnen. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.

Our weather forecast can give you a great sense of what weather to expect in Sarnen in September 2025.

If you’re planning to visit Sarnen in the near future, we highly recommend that you review the 14 day weather forecast for Sarnen before you arrive.

Temperatures
Temperatures
13° / 4°
Rainy Days
Rainy Days
10
Snowy Days
Snowy Days
0
Dry Days
Dry Days
20
Rainfall
Rainfall
152
mm
10.2
Sun Hours
10.2
Hrs

Sarnen annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January -2° / -10° 9 7 15 149 mm
Awful
February -1° / -9° 9 5 15 115 mm
Awful
March 2° / -6° 11 10 11 144 mm
Awful
April 6° / -3° 12 14 4 172 mm
Awful
May 9° / 1° 19 11 1 294 mm
Bad
June 14° / 5° 18 12 0 294 mm
Ok
July 17° / 7° 17 14 0 287 mm
Ok
August 17° / 8° 16 15 0 274 mm
Ok
September 13° / 4° 10 20 0 152 mm
Bad
October 8° / 0° 8 22 1 146 mm
Bad
November 3° / -4° 8 15 7 139 mm
Awful
December -1° / -8° 8 11 12 129 mm
Awful
Temperatures in Sarnen in September
Rain in Sarnen in September

Recommended Hotels in Sarnen

We know that finding the ideal hotel in Sarnen can be a hard task...

That’s why we run our special tools and found the best hotels in Sarnen. Click on hotel for more details.

Weather in Sarnen in September - FAQ

What is the average temperature in Sarnen in September?
The average temperature in Sarnen in September is 4/13° C.
What is the chance of rain in Sarnen in September?
On average, there are 10 rainy days in Sarnen during September.
Weather wise, is September a good time to visit Sarnen?
The weather in Sarnen in September is bad.
Can it snow in Sarnen in September?
On average, there are 0 snowy days in Sarnen in September.
More about the weather in Sarnen