City in Trøndelag, Norway
Trondheim weather by month and the best time to visit
When to go to Trondheim
May–Sep is mild and bright with outdoor life; June nights barely get dark. Winter is cold, snowy and dark, with Christmas markets in Dec.
Trondheim weather by month
Average daily high, rainfall and conditions.
- Jan0°129 mm
- Feb0°112 mm
- Mar3°117 mm
- Apr8°94 mm
- May13°94 mm
- Jun17°134 mm
- Jul20°133 mm
- Aug18°136 mm
- Sep14°148 mm
- Oct8°123 mm
- Nov3°122 mm
- Dec1°140 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 0°C32°F | -4°C25°F | 129 mm | 95% | Freezing |
| February | 0°C33°F | -4°C24°F | 112 mm | 95% | Freezing |
| March | 3°C37°F | -3°C27°F | 117 mm | 93% | Freezing |
| April | 8°C46°F | 1°C34°F | 94 mm | 86% | Cold |
| May | 13°C55°F | 5°C41°F | 94 mm | 80% | Cool |
| June | 17°C62°F | 9°C48°F | 134 mm | 81% | Cool |
| July | 20°C67°F | 12°C53°F | 133 mm | 83% | Pleasant |
| August | 18°C65°F | 11°C52°F | 136 mm | 86% | Pleasant |
| September | 14°C57°F | 8°C47°F | 148 mm | 88% | Cool |
| October | 8°C47°F | 3°C38°F | 123 mm | 92% | Cold |
| November | 3°C38°F | 0°C31°F | 122 mm | 95% | Cold |
| December | 1°C34°F | -3°C27°F | 140 mm | 96% | Freezing |
Best months across Norway
Quick answers
What is the best month to visit Trondheim?
May–Sep. May–Sep is mild and bright with outdoor life; June nights barely get dark. Winter is cold, snowy and dark, with Christmas markets in Dec.
When is the rainy season in Trondheim?
Rain peaks in September with about 148 mm. No month averages 150 mm or more.
What is the hottest month in Trondheim?
July, with average highs of 20°C (67°F).
How cold does Trondheim get?
The coolest nights are in February, averaging -4°C (24°F).
More about Trondheim
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Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 1.6°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.