Is Oslo hot in September?
Days are typically cool at 16.4°C, while nights average 8.6°C.
Norway · 1991–2020 normal
Oslo in
September.
Typical September weather in Oslo: 16.4°C by day, 8.6°C at night, 83 mm of rain over 9.2 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high16.4°C
Typical low8.6°C
Rain83 mm
Wet days9.2
In the year-round weather comparison, September scores 51 out of 100 (July leads the year at 78). Daylight is calculated as 12 h 45 from latitude 59.91°.
September at a glance
What is Oslo like in September?
Plain answers from the measured climate record—not a forecast or a promise about a particular trip.
Does it rain much?
The measured monthly average is 83 mm across about 9 wet days.
How much daylight is there?
There are about 12 h 45 between sunrise and sunset at mid-month, calculated from the place latitude.
Is September a good time to visit?
September ranks 5 of 12 in our weather comparison; July ranks first.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 3143244
- NOAA station
- NOM00001492 · OSLO BLINDERN
- Station distance
- 3.6 km from the place centre
- Coverage
- Strong coverage · 30 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Oslo is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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