Overall on the next 14 days there will be 1 days with snow in Trondheim and a total of 0.7 cm of snow.
It will be snowy on the following days:
Trondheim weather in May 2026
Click on a day for an hourly weather forecast
Saturday
May 9
1.8 mm
10° / 5°
Sunday
May 10
0.7 cm
6° / 3°
Monday
May 11
0 mm
6° / 2°
Tuesday
May 12
1 mm
7° / 2°
Wednesday
May 13
0 mm
8° / 3°
Thursday
May 14
0 mm
9° / 3°
Friday
May 15
1 mm
12° / 4°
Saturday
May 16
0 mm
13° / 5°
Sunday
May 17
0 mm
9° / 6°
Monday
May 18
0 mm
15° / 6°
Tuesday
May 19
0 mm
14° / 6°
Wednesday
May 20
0 mm
17° / 6°
Thursday
May 21
12 mm
10° / 7°
Friday
May 22
0 mm
11° / 7°
🌨️ Snowy days in Trondheim 2026 (May)
The average weather in Trondheim in May
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 2026.
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
Historic average weather for May
Click on a day for an hourly weather forecast
Explore the weather in Trondheim in other months
Trondheim annual weather
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -7° | 6 | 11 | 14 | 92 mm | Awful | Trondheim in January |
| February | -2° / -6° | 6 | 7 | 15 | 92 mm | Awful | Trondheim in February |
| March | 2° / -4° | 9 | 6 | 17 | 131 mm | Awful | Trondheim in March |
| April | 6° / -1° | 8 | 12 | 10 | 88 mm | Awful | Trondheim in April |
| May | 12° / 4° | 8 | 18 | 5 | 84 mm | Awful | Trondheim in May |
| June | 16° / 8° | 9 | 21 | 0 | 118 mm | Ok | Trondheim in June |
| July | 19° / 10° | 8 | 23 | 0 | 108 mm | Ok | Trondheim in July |
| August | 18° / 9° | 8 | 23 | 0 | 132 mm | Ok | Trondheim in August |
| September | 14° / 7° | 8 | 22 | 0 | 121 mm | Ok | Trondheim in September |
| October | 8° / 3° | 9 | 20 | 2 | 110 mm | Awful | Trondheim in October |
| November | 2° / -1° | 7 | 17 | 6 | 80 mm | Awful | Trondheim in November |
| December | -2° / -5° | 10 | 8 | 13 | 96 mm | Awful | Trondheim in December |
Temperatures in Trondheim in May
Rain in Trondheim in May
Recommended Hotels in Trondheim
Weather in Trondheim in May - FAQ
What is the average temperature in Trondheim in May?
The average temperature in Trondheim in May is 4/12° C.
What is the chance of rain in Trondheim in May?
On average, there are 8 rainy days in Trondheim during May.
Weather wise, is May a good time to visit Trondheim?
The weather in Trondheim in May is awful.
Can it snow in Trondheim in May?
On average, there are 5 snowy days in Trondheim in May.
More about the weather in Trondheim