Weather in Trondheim Today
Current temperature in Trondheim: 7°C (45°F). Overcast. Today's high 16°C (61°F), low 6°C (43°F).
Today's Daylight Forecast
Moon & Islamic Calendar
Air quality and UV are both favourable great conditions for a walk, run, or outdoor activity.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 13°C.
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Health & Activity Advice
UV index is 3 today — low. Minimal sun protection is needed for most outdoor activity.
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Conditions are comfortable for outdoor activity at most points during the day today.
It will feel cold outside — dress in layers if you're heading out.
Nearby Regional Outlook
Trondheim Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in Trondheim?
The hottest month in Trondheim is typically July, with daytime highs averaging around 18.8°C (66°F), based on 10 years of historical weather data. Overnight lows during this period average near 11.7°C (53°F).
What is the coldest month in Trondheim?
The coldest month in Trondheim is typically January, with overnight lows averaging around -4.5°C (24°F) and daytime highs near 0.6°C (33°F), based on 10 years of historical weather data. Freezing overnight temperatures are common during this month, so plan for icy conditions in the early morning.
Does Trondheim have a rainy season?
Trondheim doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. September is the wettest month on average (about 142 mm), while May is the driest (about 77 mm).
What's the best time of year to visit Trondheim?
The best time to visit Trondheim is typically June to July, when daytime highs average a comfortable 17.9°C (64°F). Rainfall during this window averages around 102 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.
Is Trondheim's air quality safe right now?
As of the latest reading, Trondheim's air quality index (AQI) is 12, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.