Trondheim weather in August 2025

Expect 17°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Trondheim in August. Check more long-term weather averages for Trondheim in August before you book your next holiday to Norway in 2025/2026.

  • 17°C maximum daytime temperature in August in Trondheim17
    17°C max day temperature
  • 5 hours of sunshine per day
  • 19 days with some rainfall in August in Trondheim19
    19 days with some rainfall
  • 9°C minimum night-time temperature in August in Trondheim9
    9°C min night temperature
  • 16 hours of daylight per day in August in Trondheim16
    16 hours of daylight per day
  • No heat & humidity in August in Trondheim0
    No heat & humidity
  • 77 mm monthly rainfall in August in Trondheim77
    77 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in August in Trondheim3
    3 (Moderate) UV index
  • 14°C sea temperature in August in Trondheim14
    14°C sea temperature

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The August weather guide for Norway (Trondheim) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Norway

How warm is it in Trondheim in August?

Daytime temperatures usually reach 17°C in Trondheim in August, falling to 9°C at night.

How sunny is it in Trondheim in August?

There are normally 5 hours of bright sunshine each day in Trondheim in August - that's 33% of daylight hours.

How warm is the sea around Trondheim in August?

The average sea temperature around Trondheim in August is 14°C.

Does it rain in Trondheim in August?

There are usually 19 days with some rain in Trondheim in August and the average monthly rainfall is 77mm.

Trondheim August sunrise & sunset times

Browse the sunrise and sunset times for Trondheim in August 2025. Select a month to view Trondheim sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 03:33 21:15
Saturday, 16th August 2025 04:17 20:26
Sunday, 31st August 2025 05:01 19:35

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