The temperatures in Hamm in May are quite cold with temperatures between 8°C and 17°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Hamm 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.
Our weather forecast can give you a great sense of what weather to expect in Hamm in May 2025.
If you’re planning to visit Hamm in the near future, we highly recommend that you review the 14 day weather forecast for Hamm before you arrive.
Temperatures
17° / 8°
Rainy Days
7
Snowy Days
0
Dry Days
24
Rainfall
102
mm
Sun Hours
9.0
Hrs
