Nettuno Weather & Climate: Best Time to Visit

Depending on the time of the year, temperatures range from comfortable to moderate in Nettuno. Average daytime temperatures reach a comfortable 28°C (82°F) in August. In January, the coolest month of the year, temperatures drop to a moderate 14°C (57°F).

At night, temperatures range from around 23°C (73°F) in August to 8°C (46°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Nettuno has a moderate amount of precipitation, averaging 984 mm (39 in) of rainfall annually. Nettuno can be quite wet during November, receiving approximately 167 mm (6.6 in) of precipitation over 15 rainy days.

In contrast, during the driest month (July), you will experience much drier conditions, with 17 mm (0.7 in) of precipitation spread across 4 rainy days. For more details, please visit our Nettuno Precipitation page.

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

The average number of days each month with precipitation

Nettuno 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 Nettuno.

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