Castellanza Weather & Climate: Best Time to Visit

In Castellanza, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 30°C (86°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 8°C (46°F).

At night, temperatures range from around 20°C (68°F) in July to 1°C (34°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Castellanza experiences significant rain/snowfall throughout the year, averaging 1434 mm (56 in) of precipitation annually. Castellanza can be quite wet during November, receiving approximately 172 mm (6.8 in) of precipitation over 13 rainy days.

In contrast, during the driest month (January), you will experience much drier conditions, with 67 mm (2.6 in) of precipitation spread across 11 rainy days days. For more details, please visit our Castellanza Precipitation page.

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

The average number of days each month with precipitation

Castellanza can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.5 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.3 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 Castellanza.

The city experiences its highest humidity in January, reaching 86%. In March, 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