The climate in Grindavík during October can be summarized as cool and wet.
October is in the fall / autumn in Grindavík and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cold 7°C (44°F), whilst at night 2°C (36°F) is normal.
|Daytime temperature||6.6°C 43.8°F|
|Nightly temperature||2.3°C 36.1°F|
|Average temperature||4.4°C 39.9°F|
|Daily sunshine||2.6 hrs|
|Avg rainfall||124 mm 4.9 ins|
|Rainy days||21 days|
|Sea temperature||9.4°C 48.9°F|
|Windspeed||22kph 14 mph|
On average October is the wettest month of the year in Grindavík with around 124mm 4.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.6 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Grindavík in October 2021.
|Hottest month:||July||12.8°C 55°F|
|Driest month:||July||67mm 2.6ins|
|Coldest month:||January||1.7°C 35.1°F|
|Wettest month:||October||124mm 4.9ins|