The climate of Arendal in September is humid. An average of 145 mm precipitation is recorded over 14 days. The situation is drier than the previous month: in August, the average recorded is 149 mm over 15 days.
Temperatures are rather cool in Arendal in September, but remain tolerable with appropriate clothing. The average maximum temperature reaches 16°C, while the minimum falls to about 12°C. The month's average temperature is 14°C. These normals should be compared with the records recorded in Arendal in September: 26°C as a maximum in 2021 and 5°C as a minimum in 2009. We can expect about 7 days with temperatures above 18°, i.e. 23% of the month.
In September, the days last on average 12:49 in Arendal. The sun rises around 05:55 and sets around 18:44.
With favorable weather, the month of September is a good month to travel to Arendal in Norway.
In September, the most favorable activities in Arendal are: Hiking and trekking, Cultural visits and heritage, Nature and landscapes, Gastronomy and Boat trip and cruise.
Some activities remain possible even if conditions are not optimal: Beach and swimming and Animal observation.