The climate of Trondheim in September is humid. An average of 121 mm precipitation is recorded over 18 days. The situation is drier than the previous month: in August, the average recorded is 132 mm over 19 days.
Temperatures are rather cool in Trondheim in September, but remain tolerable with appropriate clothing. The average maximum temperature reaches 14°C, while the minimum falls to about 8°C. The month's average temperature is 11°C. These normals should be compared with the records recorded in Trondheim in September: 22°C as a maximum in 2009 and -1°C as a minimum in 2009. We can expect about 6 days with temperatures above 18°, i.e. 20% of the month.
In September, the days last on average 13:00 in Trondheim. The sun rises around 05:43 and sets around 18:43.
With only fair weather, the month of September is not the best month of the year, but a stay to Trondheim in Norway remains possible depending on your priorities.
In September, the most favorable activities in Trondheim are: Cultural visits and heritage and Gastronomy.
Some activities remain possible even if conditions are not optimal: Northern or Southern Lights, Beach and swimming, Hiking and trekking, Animal observation, Nature and landscapes, Nightlife and Boat trip and cruise.
By contrast, these activities are not recommended or are ill-suited in Trondheim in September: Winter sports and snow.
