Grindavík weather in September (Reykjanes, Iceland)

What can you expect from the weather in Grindavík during September? Check out this comprehensive weather guide.

In September, Grindavík typically experiences low temperatures and high rainfall. Throughout the day, temperatures typically settle at around 12°C. But by evening, they drop to around 8°C.

Grindavík in September usually receives high rainfall, averaging around 150 mm for the month. Since this is the rainiest month of the year, it's a good idea to carry an umbrella just in case. When we look at the climate data from the last 30 years, we can expect around 18 days of rain.

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

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Grindavík. July typically offers the most optimal weather. In contrast, January, February, March, April, May, September, October, November and December tend to have less optimal conditions.

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

 

Grindavík, monthly averages in September

Min TemperatureMin Temperature 8°C  
Max TemperatureMax Temperature 12°C  
Chance of RainChance of Rain 61%  
PrecipitationPrecipitation 150 mm  
Rainy daysRainy days 18 days  
HumidityHumidity 79% *  
SunshineSunshine 121 hours *  
Percentage SunshinePercentage Sunshine 30% *  
* Data from: Reykjavík, Iceland (41 KM, 25 Miles).

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.

Map not visible? Whoops sorry! Please refresh the page.
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 Grindavík 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.

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 Grindavík.

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.