Solothurn Weather & Climate: Best Time to Visit

The climate in Solothurn is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 25°C (77°F) in July to a chilly 5°C (41°F) in January.

Nighttime temperatures range from 14°C (57°F) in July to -2°C (28°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Solothurn has a notably wet climate with abundant precipitation, recording 1392 mm (55 in) of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, May, sees around 148 mm (5.8 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 88 mm (3.5 in) of snow/rainfall. For more details, please visit our Solothurn Precipitation page.

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

The average number of days each month with precipitation

In Solothurn, summer days are longer and more sunny, with daily sunshine hours peaking at 8.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.8 hours per average 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 Solothurn.

The city experiences its highest humidity in October, reaching 85%. In April, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year