The highest day temperature in July 2025 was 104°F. The lowest night temperature was 75°F. The average values for day and night temperatures during July were 95.0°F и 81.5°F respectivly.

The average sea surface temperature in July 2025 for Piraeus was 82.2°F. The maximum and minimum values were 79.0°F and 87.0°F respectively.

Almost all days in July are sunny. There is very low probability of clouds or gloomy days.

Precipitation total in July for Piraeus is 0.2 in. It makes july one of the least rainy months of the year.

The average wind speed in July is 9.3 mph. It makes July one of the most windy months of the year for Piraeus.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Piraeus in July is 13.6 hours.