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Ollon Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Ollon.
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Climate overview of Ollon
Temperatures in Ollon, Vaud, Switzerland, vary greatly throughout the year. July is the hottest month at 21°C (70°F), while January is the coldest at 0°C (32°F).
The city receives considerable rain/snowfall, with around 1873 mm (74 in) annually. June is the wettest month. It has a distinct rainy season from May to August, with pleasant summers and very cold winters. July is the sunniest month, averaging 9.0 hours of sunshine per day.
Ollon Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Ollon - and find the best time to visit.
Monthly Temperature in Ollon
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
Rainfall in Ollon
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
Sunshine Hours in Ollon
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
Data from: Sion, Switzerland (27 KM, 17 Miles).
Daily hours of sunshine
Data from: Sion, Switzerland (27 KM, 17 Miles).
Daily percentage of sunshine
Data from: Sion, Switzerland (27 KM, 17 Miles).
Humidity in Ollon by Month
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
Data from: Sion, Switzerland (27 KM, 17 Miles).
Best Time to Visit Ollon
For the most comfortable conditions available during the year, consider visiting Ollon in August. Conditions are usually least comfortable in January, February, March, April, May, June, October, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
wet
Apr
wet
May
wet
Jun
very wet
Jul
mixed
Aug
good
Sep
mixed
Oct
wet
Nov
wet
Dec
cold
- Best overall: August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: A distinct rainy season from May to August, with pleasant summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in Ollon
What is the best time to visit Ollon?
August typically offers the most optimal weather in Ollon. In contrast, January, February, March, April, May, June, October, November and December tend to have less optimal conditions. Ollon has a distinct rainy season from May to August, with pleasant summers and very cold winters.
What temperatures can I expect in Ollon?
Daytime highs range from 0°C (32°F) in January to 21°C (70°F) in July. Nighttime lows range from -9°C (16°F) to 9°C (48°F). Temperatures vary considerably through the year.
How much rain does Ollon get?
Annual rainfall is around 1873 mm (74 in). June is the wettest month with 206 mm (8.1 in), while October is the driest with 123 mm (4.8 in).
How sunny is Ollon?
Ollon receives around 2,171 hours of sunshine per year. July is the sunniest month with 270 hours, while December is the cloudiest with just 70 hours. Overall, Ollon enjoys abundant sunshine.
Ollon 3-Day Forecast
Ollon on the map
Ollon is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Zürich
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