Year-round weather and climate in Trondheim, Norway
Average temperatures in Trondheim run from an average low of -4°C25°F in December up to an average high of 18°C64°F in June. December is the driest month at 13 rainy days; July the wettest at 21. Here is the annual climate data, so you know what you are packing for.
Good to know
- Population
- 217K
- Currency
- NOK
- Language
- Norwegian Nynorsk / Norwegian Bokmål
- Time zone
- Oslo
Best time to visit
For the warmest temperatures and best chance of outdoor activities, plan your trip around June, July, and August.
Rain character
Tropical Downpours: Expect intense bursts of rain during wetter months. Pack quick-drying footwear and a compact umbrella.
Day-to-night swing
Evening Chill: Temperatures drop by a noticeable 8°C14°F when the sun goes down. A light sweater or jacket is usually all you need for evening plans.
Seasonality Profile
Deep Continental: Dominated by long, freezing winters. Summers are brief but pleasantly mild.
Evening vibe
Cozy Indoor Culture: Evenings are generally crisp, damp, or sweltering. Nightlife centers around indoor venues.
Sightseeing stamina
All-Day Strolling: Weather is generally forgiving for long walking days. Comfortable sneakers are your most important packing item.
Average temperatures, sunshine, and rainfall
Average monthly weather in Trondheim, based on recent historical data. Essential insights on temperature swings, expected rainfall, and daily sunshine.
Bars span the average daily low to high. Dec is typically driest at 13 days (101mm); Jul the wettest at 21 days (135mm).
| Month | Average high | Average low | Sunshine hours | Rainy days | Total rainfall |
|---|---|---|---|---|---|
| Jan | 1°C / 34°F | -4°C / 25°F | 2h | 18 | 131mm |
| Feb | 2°C / 35°F | -4°C / 25°F | 4h | 17 | 101mm |
| Mar | 5°C / 41°F | -2°C / 28°F | 7h | 16 | 94mm |
| Apr | 7°C / 45°F | 0°C / 32°F | 9h | 14 | 78mm |
| May | 13°C / 56°F | 5°C / 41°F | 12h | 16 | 71mm |
| Jun | 18°C / 65°F | 10°C / 50°F | 12h | 14 | 91mm |
| Jul | 18°C / 64°F | 12°C / 53°F | 11h | 21 | 135mm |
| Aug | 17°C / 63°F | 11°C / 52°F | 10h | 17 | 142mm |
| Sep | 14°C / 57°F | 8°C / 47°F | 7h | 17 | 147mm |
| Oct | 9°C / 48°F | 4°C / 40°F | 4h | 21 | 152mm |
| Nov | 4°C / 40°F | 0°C / 32°F | 3h | 15 | 113mm |
| Dec | 1°C / 33°F | -4°C / 25°F | 1h | 13 | 101mm |
Weather data by Open-Meteo.com (opens in a new tab)
Frequently Asked Questions
When is the sunniest time of year to visit Trondheim?
The most sunshine in Trondheim comes around June, averaging 12 hours a month. If you're heading there then, pack your sunglasses and sunscreen.
What clothes should I pack for Trondheim?
Your packing list depends entirely on when you travel. Temperatures in Trondheim swing from an average low of -4°C25°F in December up to 18°C64°F in June. The Packola app builds a tailored packing list for you based on the live weather forecast for your exact travel dates.
Do I need to pack an umbrella for Trondheim?
Trondheim gets rain on about 199 days out of the year. The wettest month is July. If you're traveling during the rainy season, you'll definitely want to pack an umbrella and a light rain jacket.
Pack smarter.
Averages get you close, but the week you travel is what matters. Get the live forecast, a smart packing list, and discover the best local spots and activities in Trondheim with Packola.
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