Keflavík Weather & Climate: Best Time to Visit

The climate in Keflavík experiences moderate temperature changes, with mild shifts between seasons. Typically, average maximum daytime temperatures range from a moderate 14°C (57°F) in July to a chilly 5°C (41°F) in the coolest month, February.

Nights vary from 10°C (50°F) in July to around 0°C (32°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Keflavík has a notably wet climate with abundant precipitation, recording 1408 mm (55 in) of rain/snowfall per year. Keflavík offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month September (149 mm (5.9 in)) and the driest month June (77 mm (3 in)) is not too significant. For more details, please visit our Keflavík Precipitation page.

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

The average number of days each month with precipitation

For those who appreciate different seasons, Keflavík serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 6.7 hours of sunshine daily, and embrace the darker days in January, offering only 0.7 hours of daily sunlight.

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 Keflavík.

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