Weather in Iceland in September
September in Iceland is a coat month. Treat it as cities, food and short walks, not as a terrace holiday.
A country pin in September is a warning: one region of Iceland will not match another. Use a city page if you already know where you are going. Compared with July and February, September sits in the middle of Iceland's year.
- Average temp
- 9°C
5–12°C
- Rainfall
- 51 mm
Showers likely
- Sunshine
- 3 h
hours per day
What to expect
Daytime
You want a proper coat in Iceland in September, not a festival jacket. Wind makes the same afternoon feel sharper than the map suggests.
Outdoor time is the middle of the day. Finish plans before the light goes. Evenings are for indoors.
Rain
September is the wet side of the year in Iceland. Days can be heavy. Plans that cannot survive rain are the wrong plans.
This is not a reason to skip Iceland if you like the place. It is a reason to pack for weather and to stop treating every grey hour as a failed holiday.
Evening
Evenings are cooler. A layer helps after sunset.
What to pack
Rain jacket
A layer for cooler evenings
Where to stay in Iceland
Featured stays on trip1. Dates are a starting point for September.
Travel guides for Iceland
What to read before you book.
Average weather in Iceland
TemperatureRainfall
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FAQs about Iceland
Climate averages for Iceland, 1991–2020.
The best time to visit Iceland is between April and September, the most comfortable stretch of the year on these averages.
July is the hottest month, with an average around 12°C.
October is the wettest month, with about 78 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
