Château-dʼOlonne Weather & Climate: Best Time to Visit

The climate in Château-dʼOlonne is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 23°C (73°F) in August to a chilly 11°C (52°F) in the coolest month, January.

Nights vary from 17°C (63°F) in August to around 6°C (43°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Château-dʼOlonne receives mid-range precipitation levels, with 861 mm (34 in) annually. The climate in Château-dʼOlonne shows significant variation throughout the year. Expect high rainfall in November, the wettest month, with an average of 111 mm (4.4 in) of precipitation over 16 rainy days.

In contrast, the driest month July offers drier and sunnier days, with around 39 mm (1.5 in) of rainfall over 10 rainy days. For more details, please visit our Château-dʼOlonne 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, Château-dʼOlonne serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.1 hours of sunshine daily, and embrace the darker days in December, offering only 2.5 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The city experiences its highest humidity in December, reaching 88%. In July, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year