The weather in Trondheim in May is very cold with temperatures between 4°C and 12°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Trondheim. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
You can expect a few days of snow in Trondheim during May. It’s important to get out your snow boots and warm mittens to stay warm while you explore Trondheim.
Our weather forecast can give you a great sense of what weather to expect in Trondheim in May 2025.
If you’re planning to visit Trondheim in the near future, we highly recommend that you review the 14 day weather forecast for Trondheim before you arrive.
Temperatures
12° / 4°
Rainy Days
8
Snowy Days
5
Dry Days
18
Rainfall
84
mm
Sun Hours
7.6
Hrs
