SeasonMapTrondheim weather in May
Norway
May in Trondheim: cool, a little rain, with clean air — an excellent time to visit.
#4 of 12 months in Trondheim · #743 of 1383 destinations to visit in May · comfort 80/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Trondheim in May
Other months in Trondheim
June in Trondheim barely gets dark — over twenty hours of daylight — and the forum's own saying is that if you are not happy with the weather, give it five minutes. Expect 10 to 20°C, some nights down to 5, occasional days above 25, and the honest possibility of cold, windy and rainy instead. They call June relatively dry, though the record still shows rain on about thirteen days. The packing list is a list precisely because you may need all of it: windproof and waterproof shell, a woollen sweater, long trousers, hiking shoes, and shorts. June versus July is not worth agonising over — the difference is statistical.
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Trondheim climate normals — May
| Daytime high | 15°C / 58°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 43°F | |
| Feels like (high) | 13°C / 55°F | |
| Sea temperature | 9°C / 48°F | 🥶 cold sea |
| Rainfall | 53 mm / 2.1 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | 4°C / 40°F | |
| Sunshine | 11.8 h/day | |
| Daylight | 18.2 h | |
| Wind | 13 km/h / 8 mph | |
| Snowfall | 2.8 cm / 1.1 in | |
| Air quality (US AQI) | 37 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Trondheim in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Shoulder seasonschool holidays in 4 of the markets that fill it, an ordinary month(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Trondheim's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherTrondheim's weather peaks June–August, best around July.
Best weatherFair weatherToughest weather
Nearby, and something's on
Within 300 km of Trondheim — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Trondheim?
Trondheim in May — FAQ
- Is May a good time to visit Trondheim?
- May in Trondheim: cool, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Trondheim on SeasonMap's comfort score (80/100).
- What is the weather like in Trondheim in May?
- In May, Trondheim averages a daily high of 14.7°C and a low of 5.9°C, with about 53.4 mm of rain over roughly 10.6 rainy days.
- What is the air quality in Trondheim in May?
- Trondheim has a mean US Air Quality Index of about 37 in May.
- Does it snow in Trondheim in May?
- Trondheim sees roughly 2.8 cm of snowfall in May.
Other months in Trondheim
Compare Trondheim in May
Warmer or cooler than Trondheim in May
Similar destinations in Northern Europe — May
Within 300 km: Geiranger's Dalsnibba and Eagle Road open around 20 May – 5 Nov, and Åre's Ski season around 5 Dec – 3 May.