The temperatures in Helsinki 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 Helsinki 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 Helsinki can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in Helsinki in May 2025.
If you’re planning to visit Helsinki in the near future, we highly recommend that you review the 14 day weather forecast for Helsinki before you arrive.
Temperatures
11° / 7°
Rainy Days
5
Snowy Days
1
Dry Days
25
Rainfall
60
mm
Sun Hours
9.5
Hrs
