Selfoss Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from moderate to chilly in Selfoss. Average daytime temperatures reach a moderate 15°C (59°F) in July. In February, the coolest month of the year, temperatures drop to a chilly 4°C (39°F).

At night, temperatures range from around 10°C (50°F) in July to -2°C (28°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Selfoss has a relatively rain/snowy climate with high precipitation levels, averaging 1668 mm (66 in) of rain/snowfall annually. Selfoss experiences moderate seasonal variation in rainfall, with monthly averages ranging from 177 mm (7 in) in September, the wettest month, and 89 mm (3.5 in) in June, the driest month. For more details, please visit our Selfoss Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Selfoss can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 6.7 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 0.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Selfoss.

The city experiences its highest humidity in July, reaching 81%. In May, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year