Winter (December to February)
Sharp cold with highs around 1° and lows near -4°, very frequent rain (15 rainy days per month on average). Not an ideal time for a leisure trip.
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When to visit Norway
Climate · 10-year averages
When to visit Trondheim?
No month ticks every box in Trondheim, so here's the month-by-month breakdown to help you pick the least bad time.
Best time to go
No ideal time
Hottest month
July · 19°
Coldest month
January · -5°
Wettest month
September · 135 mm
Climate month by month
Bars: monthly rainfall. Lines: average highs and lows. Month color: our travel comfort index.
- JanuaryÀ éviter
0° / -5°
- Rain
- 98 mm · 16 d
- Sunshine
- 2.0 h/day
- Humidity
- 75%
- FebruaryÀ éviter
2° / -4°
- Rain
- 78 mm · 14 d
- Sunshine
- 4.1 h/day
- Humidity
- 76%
- MarchÀ éviter
4° / -3°
- Rain
- 97 mm · 16 d
- Sunshine
- 6.6 h/day
- Humidity
- 75%
- AprilÀ éviter
8° / 0°
- Rain
- 77 mm · 15 d
- Sunshine
- 9.6 h/day
- Humidity
- 75%
- MayÀ éviter
13° / 4°
- Rain
- 77 mm · 16 d
- Sunshine
- 11.4 h/day
- Humidity
- 73%
- JuneMitigé
17° / 9°
- Rain
- 91 mm · 15 d
- Sunshine
- 11.6 h/day
- Humidity
- 75%
- JulyMitigé
19° / 11°
- Rain
- 101 mm · 17 d
- Sunshine
- 11.7 h/day
- Humidity
- 77%
- AugustMitigé
18° / 11°
- Rain
- 123 mm · 16 d
- Sunshine
- 10.0 h/day
- Humidity
- 80%
- SeptemberÀ éviter
15° / 8°
- Rain
- 135 mm · 16 d
- Sunshine
- 7.3 h/day
- Humidity
- 81%
- OctoberÀ éviter
9° / 3°
- Rain
- 127 mm · 18 d
- Sunshine
- 4.9 h/day
- Humidity
- 84%
- NovemberÀ éviter
4° / -1°
- Rain
- 81 mm · 13 d
- Sunshine
- 2.8 h/day
- Humidity
- 81%
- DecemberÀ éviter
1° / -4°
- Rain
- 116 mm · 17 d
- Sunshine
- 0.9 h/day
- Humidity
- 81%
2014–2023 averages from the ERA5 reanalysis (Copernicus) via Open-Meteo. A day counts as a “rainy day” from 1 mm of rain.
Our take, season by season
Spring (March to May)
Cool weather with highs around 8° and lows near 1°, very frequent rain (16 rainy days per month on average). Not an ideal time for a leisure trip.
Summer (June to August)
Mild weather with highs around 18° and lows near 10°, very frequent rain (16 rainy days per month on average). A decent time to go, as long as you're willing to make a few compromises.
Fall (September to November)
Cool weather with highs around 9° and lows near 4°, very frequent rain (15 rainy days per month on average). Not an ideal time for a leisure trip.
Frequently asked questions
- When is the best time to visit Trondheim?
- No month is ideal in Trondheim by our criteria (highs between 20 and 29 °C, little rain). The best-rated months are from June to August.
- What is the hottest month in Trondheim?
- July is the hottest month, with an average high of 19 °C.
- What is the coldest month in Trondheim?
- January is the coldest month, with an average low of -5 °C.
- When does it rain the most in Trondheim?
- September is the wettest month (135 mm, about 16 rainy days). The driest is May (77 mm).
- When should you avoid Trondheim?
- The least favorable months are from September to May: too hot, too cold, or too rainy to make the most of your trip.
When to visit other cities · Norway
The capital and the country's other major cities.
More practical info: Norway
- Country guideEverything about a country on one page: time, weather, currency, plugs, emergency numbers, tipping, visas.
- WeatherTemperature, rain, wind, and UV index for every capital.
- Air qualityPollution, fine particulate matter, and ozone, with a 36-hour forecast.
- Local timeLive clock, time zone, and time difference from where you are.
- Public holidaysEvery public holiday of the year, plus the next one coming up.
- Power OutletsPlug type, voltage, and whether your devices need an adapter.
- Driving SideWhich side of the road to drive on and which license you need before renting a car.
- Emergency NumbersPolice, ambulance, and fire department numbers for every country.
- TippingHow much to tip at restaurants, in taxis, and at hotels.
- Dialing CodesHow to call a country from abroad.
- Salat TimesFajr, Dhuhr, Asr, Maghrib, Isha, and Imsak times in every capital.
- QiblaReal-time compass pointing to the Kaaba from your GPS location.
- Visa requirements from FranceDo you need a visa for Norway?