Castel Porziano Weather & Climate: Best Time to Visit

The climate in Castel Porziano is known for significant temperature differences throughout the year, making the weather dynamic. Average daytime temperatures reach a comfortable 29°C (84°F) in August. In January, the coolest month of the year, temperatures drop to a moderate 13°C (55°F).

At night, temperatures range from around 22°C (72°F) in August to 7°C (45°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Castel Porziano receives mid-range precipitation levels, with 943 mm (37 in) annually. Castel Porziano can be quite wet during November, receiving approximately 159 mm (6.3 in) of precipitation over 15 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 18 mm (0.7 in) of precipitation spread across 4 rainy days. For more details, please visit our Castel Porziano Precipitation page.

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

The average number of days each month with precipitation

Castel Porziano can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 11.1 hours of sunshine daily. In contrast, the city experiences much darker days in December, 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 Porziano.

The city experiences its highest humidity in November, reaching 77%. In July, the humidity drops to its lowest level at 72%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The mean wind speed varies between 3 m/s (6 knots) and 4 m/s (8 knots) throughout the year. It is lowest in August and highest during December. What does this mean?

The mean monthly wind speed over the year (meters per second)