Measurements:
°C
°F
Piraeus
60°F
W 7 mph
Feels like: 58°F
Precip: 100%
World Resorts Greece Piraeus Weather September Weather in Piraeus

Piraeus Weather: September

Average Day Temperature: 87.1°F
Average Night Temperature: 73.9°F
Sea Water Temperature: 81.5°F
Number of Sunny Days: 25 days
Sunshine Hours: 11.8 - 13.0 hours
Number of Rainy Days: 2 days
Precipitation Totals: 0.7 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 95°F. The lowest night temperature was 65°F. The average values for day and night temperatures during September were 84.3°F и 73.8°F respectivly.

Piraeus Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Piraeus was 81.4°F. The maximum and minimum values were 78.2°F and 83.2°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Piraeus is 0.7 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 8.9 mph.

Average Sunny Hours Per Day

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 September is 10.7 hours.

Best Time to Visit Piraeus
The most sunny months:
July 30 days
August 30 days
June 27 days
The most warm months:
July 95.7 °F
August 94.4 °F
June 89.2 °F
Warmest sea temperature:
August 83.6 °F
July 82.2 °F
September 81.5 °F
The most cold months:
January 54.7 °F
February 57.0 °F
December 58.5 °F
The most rainy months:
February 3 days
January 3 days
December 3 days
The most windy months:
August 11 mph
July 9 mph
February 9 mph

Piraeus on the Weather Map

Greece Resorts:
NAME
Athenes +60
Athos +58
Bali Gr +62
Chalkidiki +60
Chania +54
Corfu +56
Crete +56
Hanioti +58
Heraklion +62
Hersonissos +58
Paralia Katerini +52
Rhodes +64
Santorini +68
Thasos +62
Thessaloniki +52
24 Hours Weather Forecast
Piraeus
Local time: 07:16
05 dec, friday
0900 58°F
S
3 mph
1200 62°F
SE
6 mph
1500 62°F
SE
6 mph
1800 58°F
SE
7 mph
2100 58°F
SE
6 mph
06 dec, saturday
0000 56°F
SE
4 mph
0300 56°F
SE
2 mph
0600 56°F
S
6 mph