The temperatures in Karjaa in September are usually low and can range between 12°C and 15°C.
You can expect about 3 to 8 days of rain in Karjaa 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 Karjaa in September 2026.
If you’re planning to visit Karjaa in the near future, we highly recommend that you review the 14 day weather forecast for Karjaa before you arrive.
Temperatures
15° / 12°
Rainy Days
7
Snowy Days
0
Dry Days
23
Rainfall
111
mm
Sun Hours
9.0
Hrs
