Keflavík weather in September (Reykjanes, Iceland)

Will it be rainy or sunny in Keflavík this September? Curious if the timing is right for your trip? Our page offers an in-depth look at the monthly weather conditions.

Temperatures

In September, Keflavík usually has low temperatures and high rainfall. Anticipate daytime highs near 12°C, and cooler nights with temperatures around 8°C.

Precipitation

Keflavík in September usually receives high rainfall, averaging around 149 mm for the month. As the month with the highest rainfall, make sure to have an umbrella to manage the showers. Historically, approximately 18 days this month are expected to have rain.

Average sunshine

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 Keflavík. July generally stands out with the best circumstances. While January, February, March, April, May, August, September, October, November and December tend to showcase less optimal conditions.

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

 

Keflavík, monthly averages in September

Min Temperature 8°C  

Max Temperature 12°C  

Chance of Rain 61%  

Precipitation 149 mm  

Rainy days 18 days  

Humidity 79% *  

Sunshine 121 hours *  

Percentage Sunshine 30% *  

Data from: Reykjavík, Iceland (34 KM, 21 Miles).

Where to go in Iceland in September

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

Weather conditions Weather

Temperatures

Precipitation

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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 this month?

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.

What To Do

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

Outdoor sports

5/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Keflavík.

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 travel conditions. Find out where to go with our weather planner.