Trondheim Weather in May
In Trondheim, May brings moderate daytime temperatures around 14°C (57°F), with nights cooling to 5°C (41°F). Expect quite a bit of rainfall this month.
Rainfall in Trondheim in May
This month experiences about 15 days of rain according to historical data, averaging 84 mm (3.3 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Trondheim in May
Daytime highs in Trondheim in May reach 14°C (57°F), with nights around 5°C (41°F). The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Trondheim in May
With approximately 239 hours of sunshine, the days are filled with clear skies. Despite it being a cool month, it makes for pleasant days outside.If you prefer enjoying temperate temperatures and rain-free days, July typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Norway, check out our Trondheim's climate page.
Trondheim Temperature in May
Min Temperature
5°C (41°F)
Max Temperature
14°C (57°F)
Chance of Rain
50%
Precipitation
84 mm (3.3 in)
Rainy days
15 days
Humidity
73% *
Sunshine
239 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Trondheim typically rise from around 10°C (50°F) at the start of May to approximately 15°C (59°F) by the end. Nights are cold, with lows typically ranging from 3°C (37°F) to 7°C (45°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Trondheim in May
Browse day-by-day weather records for Trondheim spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Trondheim historical weather extremes in May
Our historical data for Trondheim spans 1976 to 2026, revealing these weather extremes.
- The hottest May day on record in Trondheim reached 28°C (82°F) (May 28, 1988).
- The lowest daytime temperature in May was 2°C (36°F), recorded on May 13, 2020.
- Nighttime temperatures dropped to -4°C (25°F) on May 7, 1999, marking the coldest May night on record.
Best Places in Norway in May
Find out more about the weather in Norway and which places have the best travel conditions in this month. See all of Norway in May →
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What to Wear in Trondheim in May
The weather can swing between comfortable and chilly in May, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Trondheim in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Norway, check out our Trondheim's climate page.
Temperature Rainfall Sunshine Humidity
See the full Trondheim climate overview or explore weather in Norway.
