Cool
Average highs are around 17°C, so pack for cooler days.
August verdict
Poor for holiday weather
Average highs are around 17°C, so pack for cooler days. Sunshine averages 5.3h per day, enough for a balanced month. Rainfall averages 77mm, which is relatively low for holiday planning.
Monthly averages
Temp
17°C
Rain
77mm
Sun
5.3h
Sea
14°C
Weather score
28
Poor
Cool
Average highs are around 17°C, so pack for cooler days.
Drier
Rainfall averages 77mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.3h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Compare Trondheim, Norway with nearby places by weather score, rain, sun, temperature, and swim conditions.
August17°C average high
August is one of Trondheim's hottest months, so shade and slower afternoons matter.
Warmest monthsJune to August
This stretch sets the upper range for average daytime heat.
August77mm average rain
August sits on the drier side of Trondheim's year, which helps with sightseeing and transfers.
Driest monthsFebruary to August
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
August5.3 hours average sun
August is brighter than Trondheim's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
August14°C average sea
August is one of Trondheim's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 13°C in this stretch, so swimming comfort is at its strongest.
August28 weather score
August scores above Trondheim's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsMay to August
These months have the strongest weather score in the monthly averages.