Piraeus Weather & Climate: Best Time to Visit

The climate in Piraeus is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 33°C (91°F) in July to a moderate 14°C (57°F) in the coolest month, January.

Nights vary from 23°C (73°F) in July to around 7°C (45°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Piraeus maintains relatively dry conditions year-round, recording average annual precipitation of 399 mm (16 in). The climate in Piraeus shows significant variation throughout the year. Expect moderate rainfall in December, the wettest month, with an average of 65 mm (2.6 in) of precipitation over 10 rainy days.

In contrast, the driest month August offers drier and sunnier days, with around 4.3 mm (0.2 in) of rainfall over 2 rainy days. For more details, please visit our Piraeus 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, Piraeus serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 12.1 hours of sunshine daily, and embrace the darker days in December, offering only 4.2 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The mean water temperature over the year ranges from 14°C (57°F) in January to 24°C (75°F) in July.

Water temperature over the year

The relative humidity is high throughout the year in Piraeus.

The city experiences its highest humidity in November, reaching 73%. In July, the humidity drops to its lowest level at 43%. 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 1 m/s (2 knots) and 2 m/s (4 knots) throughout the year. It is lowest in April, May, June, September and November and highest during January, February, March, July, August, October and December. What does this mean?

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