Weather in Trondheim in September
Trondheim, Norway averages a high of 14.2°C (57.6°F) and low of 7.7°C (45.9°F) in September, with 15 rain days and 7.5 hours of daily sunshine. Travel score: 57/100 (Mixed). The best time to visit Trondheim is July.
High
14°C58°F
Low
8°C46°F
🌧️
15
rain days
☀️
7.5
hrs/day sunshine
💧
83%
humidity
57— Mixed
September in Trondheim is cool and occasionally wet — mixed conditions — plan indoor alternatives.
What are the average temperatures in Trondheim?
How much does it rain in Trondheim in September?
Trondheim receives an average of 109.3mm of rainfall across 15 rainy days in September. The annual total is 1070mm.
What should I pack for Trondheim in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 14°C
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Sweaters and warm layers
Layer up for comfort
Traveling to Norway in September?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31