Norway in September: where is it warmest?
In September, Oslo is the warmest place with 16 °C by day, Tromsø the coolest with 11 °C. 1 of 3 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
Norway in September: quick answers
Norway in September: where is it warmest?
The warmest places in September are Oslo (16 °C), Bergen (14 °C) and Tromsø (11 °C).
Norway in September: where is the sea warmest?
The sea is warmest at Oslo (16 °C), Bergen (15 °C) and Tromsø (10 °C).
Norway in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Oslo, Bergen and Tromsø.
Norway month by month
Norway: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)