Reykjavík weather in September (Capital Region, Iceland)

Planning a trip to Reykjavík in September? Wondering if it's the right time to visit? Browse this page for a comprehensive overview of the weather conditions for that month.

In September, Reykjavík generally has moderate temperatures and high rainfall. Daytime temperatures hover around 12°C, while nights can cool down to about 6°C.

Reykjavík in September usually receives high rainfall, averaging around 145 mm for the month. Delving into the climate records from the past 30 years, one can predict that nearly 18 days of the month will see rainfall.

The city usually sees around 121 hours of sunlight, indicating a moderately sunny period.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Reykjavík. June and July typically offer the best circumstances. While January, February, March, April, September, October, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Reykjavík climate page with graphs.

 

Reykjavík, monthly averages in September

Min TemperatureMin Temperature 6°C  
Max TemperatureMax Temperature 12°C  
Water TemperatureWater Temperature 10°C  
Chance of RainChance of Rain 60%  
PrecipitationPrecipitation 145 mm  
Rainy daysRainy days 18 days  
HumidityHumidity 79%  
WindspeedWindspeed 18 km/h  
SunshineSunshine 121 hours  
Percentage SunshinePercentage Sunshine 30%  

Where to go in Iceland in September

Find out more about the weather in Iceland in September and which places have the best weather conditions in this month.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Reykjavík in September?

Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay. With a water temperature of around 10°C there is no need to bring your swimwear.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do in September.

Swimming
5/10
Cycling
5/10
Walking
5/10
Camping
3/10
Outdoor sports
5/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Reykjavík.

Our site offers climate and forecast data for every country in the world. Are you going to Iceland? On this website you can find historical weather averages for many cities in Iceland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.