Mosterøy Weather & Climate: Best Time to Visit

The climate in Mosterøy is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a pleasant 19°C (66°F) in August to a chilly 5°C (41°F) in February.

Nighttime temperatures range from 13°C (55°F) in August to 1°C (34°F) in February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Mosterøy has a notably wet climate with abundant precipitation, recording 2057 mm (81 in) of rain/snowfall per year. The seasons in Mosterøy bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 239 mm (9.4 in) of precipitation. This rainfall is distributed across 25 rainy days.

In contrast, the driest month, May, experiences much less rainfall, totaling 99 mm (3.9 in) over 17 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Mosterøy Precipitation page.

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

The average number of days each month with precipitation

In Mosterøy, summer days are longer and more sunny, with daily sunshine hours peaking at 7.5 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.1 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Mosterøy.

The city experiences its highest humidity in January, reaching 82%. 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