Grundarfjordur Weather & Climate: Best Time to Visit

The climate in Grundarfjordur experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a moderate 13°C (55°F) in July, the warmest time of the year, to a chilly 3°C (37°F) during cooler months like February.

At night, you can expect temperatures ranging from 9°C (48°F) in July to around -1°C (30°F) during February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Grundarfjordur has a relatively rain/snowy climate with high precipitation levels, averaging 1238 mm (49 in) of rain/snowfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, September it receives high rainfall, averaging 136 mm (5.4 in) of precipitation, recorded across 17 rainy days. In contrast, the driest month June brings less rainfall, with 59 mm (2.3 in) over 15 rainy days. For more details, please visit our Grundarfjordur Precipitation page.

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

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Grundarfjordur. While May receives considerable daily sunshine with up to 6.1 hours, December marks the darkest time of the year, where sunshine is scarce with only 0.3 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 Grundarfjordur.

The city experiences its highest humidity in August, reaching 81%. In May, the humidity drops to its lowest level at 78%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year