Daytime highs, nighttime lows and the warmest cities in Capital Region, Iceland this September.
Capital Region, Iceland, a region in Iceland, typically experiences mild weather in September, with maximum daytime temperatures around 12°C (54°F) and nighttime temperatures around 6°C (43°F) in Reykjavík.
Discover the typical September temperatures for the most popular locations of Capital Region on the map below. Detailed insights are just a click away.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Capital Region.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Daytime temperatures in Reykjavík typically peak at 12°C (54°F) in September, putting it in the moderate range.
After dark, Reykjavík cools to about 6°C (43°F) on an average September night.
Most cities enjoy a balanced amount of sunshine, with around 121 hours of sunlight anticipated in Reykjavík. This ensures the days are neither too dim nor excessively sunny.
The water temperature averages approximately 10°C (50°F) in Reykjavík this month, generally too cold for comfortable swimming.
We have much more information about the climate in Capital Region.
Weather and climate has detailed information for every country in the world. Are you going to Iceland? Get detailed historical weather averages for many cities in Iceland.
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