The temperatures in Karjaa in May are quite cold with temperatures between 7°C and 11°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Karjaa during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Please note that Karjaa can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in Karjaa in May 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
11° / 7°
Rainy Days
6
Snowy Days
1
Dry Days
24
Rainfall
71
mm
Sun Hours
9.5
Hrs