Weather in September 2025

Basel weather in September 2025

The temperatures in Basel in September are comfortable with low of 10°C and and high up to 21°C.

You can expect about 3 to 8 days of rain in Basel during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

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

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

Temperatures
Temperatures
21° / 10°
Rainy Days
Rainy Days
5
Snowy Days
Snowy Days
0
Dry Days
Dry Days
25
Rainfall
Rainfall
79
mm
10.7
Sun Hours
10.7
Hrs

Basel annual weather

Month Temperatures Rainy Days Dry Days Snowy Days Rainfall Weather More details
January 5° / -1° 9 13 10 105 mm
Awful
February 6° / -1° 8 12 9 94 mm
Awful
March 11° / 2° 8 19 4 84 mm
Awful
April 15° / 5° 6 23 1 87 mm
Good
May 18° / 8° 10 21 0 157 mm
Ok
June 22° / 11° 9 21 0 176 mm
Ok
July 24° / 13° 8 23 0 168 mm
Good
August 25° / 13° 8 23 0 140 mm
Good
September 21° / 10° 5 25 0 79 mm
Good
October 16° / 7° 6 25 0 98 mm
Good
November 10° / 3° 8 20 2 110 mm
Awful
December 6° / 0° 11 13 7 136 mm
Awful
Temperatures in Basel in September
Rain in Basel in September

Recommended Hotels in Basel

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

Weather in Basel in September - FAQ

What is the average temperature in Basel in September?
The average temperature in Basel in September is 10/21° C.
What is the chance of rain in Basel in September?
On average, there are 5 rainy days in Basel during September.
Weather wise, is September a good time to visit Basel?
The weather in Basel in September is good.
Can it snow in Basel in September?
On average, there are 0 snowy days in Basel in September.
More about the weather in Basel