Trondheim Climate by Month
Trondheim, Trøndelag, Norway
Mild summers and cold winters, with rain spread through the year.
Trondheim has mild summers and cold winters, with rain spread through the year. July is the warmest month, with highs around 67°F (19°C); December is the coolest at 37°F (3°C), and nights dip to 28°F (-2°C). About 38 in (962 mm) of rain falls in a typical year, with no clear rainy season.
- Warmest month
- 67°F(19°C)
- Average high, July
- Coldest nights
- 28°F(-2°C)
- Average low, February
- Rain per year
- 38 in(962 mm)
- No clear rainy season
- Humidity
- 77%
- Sunniest: June
Best and worst months in Trondheim
Best for weatherJuly and August are the best time for weather in Trondheim: highs near 66°F (19°C) and about 3.3 in (84 mm) of rain a month.
Least pleasantFebruary and December are the least pleasant; December is the coldest, with highs of only 37°F (3°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Trondheim weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 37°F(3°C) | 28°F(-2°C) | 3.4 in(87 mm) | 79% | 0.2 |
| FebFebruary | 37°F(3°C) | 28°F(-2°C) | 3.2 in(81 mm) | 81% | 0.7 |
| MarMarch | 41°F(5°C) | 30°F(-1°C) | 3.1 in(79 mm) | 71% | 1.9 |
| AprApril | 49°F(10°C) | 35°F(2°C) | 2.1 in(54 mm) | 66% | 3.6 |
| MayMay | 55°F(13°C) | 41°F(5°C) | 2.3 in(58 mm) | 70% | 4.9 |
| JunJune | 61°F(16°C) | 46°F(8°C) | 3.2 in(82 mm) | 71% | 5.3 |
| JulJulyBest | 67°F(19°C) | 51°F(11°C) | 3.1 in(79 mm) | 76% | 5.3 |
| AugAugustBest | 66°F(19°C) | 51°F(10°C) | 3.5 in(89 mm) | 78% | 3.9 |
| SepSeptember | 59°F(15°C) | 46°F(8°C) | 3.7 in(95 mm) | 83% | 2.3 |
| OctOctober | 48°F(9°C) | 37°F(3°C) | 3.6 in(91 mm) | 86% | 1.1 |
| NovNovember | 41°F(5°C) | 33°F(0°C) | 3.0 in(75 mm) | 81% | 0.3 |
| DecDecember | 37°F(3°C) | 28°F(-2°C) | 3.6 in(92 mm) | 81% | 0.1 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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