Affoltern (BERN) Weather & Climate: Best Time to Visit

Visitors to Affoltern can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 24°C (75°F) in July, the warmest time of the year, to a chilly 4°C (39°F) during cooler months like January.

At night, you can expect temperatures ranging from 13°C (55°F) in July to around -2°C (28°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Affoltern is known for its substantial rain/snowfall, with annual precipitation reaching 1393 mm (55 in). Year-round, Affoltern has a balanced climate with minimal variation in precipitation. The difference between the wettest month, June, with 147 mm (5.8 in), and the driest month, February, with 92 mm (3.6 in), is minimal. For more details, please visit our Affoltern 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 Affoltern. While July receives considerable daily sunshine with up to 8.1 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.8 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 Affoltern.

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