Best time to visit Trondheim

Trondheim is a city of two halves. July scores 63 and January scores 9 — a 54-point swing, which is the difference between a holiday and an endurance test. The month you pick matters more here than almost anywhere. The good window runs June to August — 3 months within ten points of the best.

July is the warmest month at 19.3 °C and January the coolest at -0.2 °C — a 19.5 °C spread across the year. It never reaches 30 °C in an average year, which takes heat off the list of reasons to avoid any particular month. At the other end, 116 nights a year fall below freezing: the winter here is a real one.

Rain is spread evenly through the year — between 16 and 20 wet days in every month — so there is no dry season to aim for and no wet one to dodge. Whatever you plan, the odds of rain are much the same.

The sea peaks at just 14.2 °C, which is wetsuit territory even at its warmest — a coast to look at rather than swim in. Daylight swings hard — 20.5 hours at midsummer against 4.6 at midwinter. That 15.9-hour difference changes how much fits into a day more than the temperature does.

The three strongest months are July, August, June. The one to think twice about is January. Each month below has its own page with rainfall reliability, extremes, daylight, sea temperature and crowd levels.

Trondheim month by month