Ollon Weather & Climate: Best Time to Visit

The climate in Ollon is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a pleasant 21°C (70°F) in July to a very cold 0°C (32°F) in the coolest month, January.

Nights vary from 9°C (48°F) in July to around -9°C (16°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Ollon has a notably wet climate with abundant precipitation, recording 1873 mm (74 in) of rain/snowfall per year. Ollon offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between the wettest month June (206 mm (8.1 in)) and the driest month October (123 mm (4.8 in)) is not too significant. For more details, please visit our Ollon Precipitation page.

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

The average number of days each month with precipitation

For those who appreciate different seasons, Ollon serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.0 hours of sunshine daily, and embrace the darker days in December, offering only 2.3 hours of daily sunlight.

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 Ollon.

The city experiences its highest humidity in December, reaching 83%. In April, the humidity drops to its lowest level at 59%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year