Sommeri Weather & Climate: Best Time to Visit

Visitors to Sommeri can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 24°C (75°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 4°C (39°F).

At night, temperatures range from around 15°C (59°F) in July to -2°C (28°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Sommeri is known for its substantial rain/snowfall, with annual precipitation reaching 1470 mm (58 in). Sommeri experiences moderate seasonal variation in rainfall, with monthly averages ranging from 169 mm (6.7 in) in June, the wettest month, and 89 mm (3.5 in) in February, the driest month. For more details, please visit our Sommeri Precipitation page.

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

The average number of days each month with precipitation

Sommeri can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 7.6 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.6 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 Sommeri.

The city experiences its highest humidity in November, reaching 82%. In April, the humidity drops to its lowest level at 68%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year