Castel San Giorgio Weather & Climate: Best Time to Visit

In Castel San Giorgio, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in August, the warmest time of the year, to a moderate 12°C (54°F) during cooler months like February.

At night, you can expect temperatures ranging from 21°C (70°F) in August to around 6°C (43°F) during February.

Check out our detailed temperature page for more information.

Temperature ranges by month

Castel San Giorgio experiences significant rainfall throughout the year, averaging 1329 mm (52 in) of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, November it receives heavy rainfall, averaging 208 mm (8.2 in) of precipitation, recorded across 14 rainy days. In contrast, the driest month July brings less rainfall, with 23 mm (0.9 in) over 5 rainy days. For more details, please visit our Castel San Giorgio 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 Castel San Giorgio. While July receives considerable daily sunshine with up to 10.7 hours, January marks the darkest time of the year, where sunshine is scarce with only 3.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Castel San Giorgio.

The city experiences its highest humidity in January, reaching 80%. In June, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year