Average Weather during September in Grindavík (Reykjanes), Iceland

The average minimum temperature (usually the minimum temperature is noted during the night) in Grindavík in September is 5.6°C (42.08°F). The amount of rain in September is normal with an average of 73mm (2.9in). This month is known as a chilly month. The average maximum temperature lies around 11.0°C (51.8°F). With a water temperature of around 10.0°C (50°F), this is not the best month to swim. You will see the sun occasionally during this month, it has 121 hours of sun.

So what to wear in September? Visitors traveling to Grindavík should plan on bringing a totally waterproof rain jacket since it will often be raining. Also plan on bringing your warm clothes, it can be a bit chilly during this period. Since climate change is one of the main problems the world faces these days we recommend to buy sustainable or second hand cloths. We made a deal with our partner praNa which means this month you get 70% off the original price of Women’s Dresses + Free shipping with code DRESS70.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.

For other monthly average weather and what to do in September look at the numbers below.

Monthly Averages

Show in Fahrenheit

Min Temperature 5 °C
Max Temperature 11 °C
Water Temperature 10 °C
Chance of Rain 43%
Precipitation 73mm
Rainy Days 13
Sunshine Hours 121

What To Do

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

Swimming
5/10
Cycling
6/10
Walking
6/10
Camping
4/10
Outdoor sports
6/10

More Climate Information For Grindavík

Weather and Climate offers all the information you need to know about the climate in Grindavík.

We collected past weather data from many thousand weather stations around the world. So find on this website the historical weather averages in other cities in Iceland and climate and forecast data for all other countries in the world.