Measurements:
°C
°F
CURRENT WEATHER
02:57
Piraeus
74°F
SW 4 mph
Feels like: 74°F
Precip: 6%
World Resorts Greece Piraeus Weather

7 Day Weather Forecast

09.14
mon
DAY
82°F
SW 10 mph
precip
2%
NIGHT
72°F
S 4 mph
precip
11%
09.15
tue
DAY
82°F
SW 14 mph
precip
1%
NIGHT
72°F
S 6 mph
precip
10%
09.16
wed
DAY
80°F
SW 17 mph
precip
8%
NIGHT
68°F
S 6 mph
precip
2%
09.17
thu
DAY
82°F
S 11 mph
precip
1%
NIGHT
72°F
S 4 mph
precip
1%
09.18
fri
DAY
84°F
S 2 mph
precip
0%
NIGHT
74°F
E 3 mph
precip
4%
09.19
sat
DAY
84°F
NE 4 mph
precip
1%
NIGHT
74°F
E 3 mph
precip
3%
09.20
sun
DAY
86°F
S 11 mph
precip
9%
NIGHT
70°F
SE 6 mph
precip
9%

Piraeus Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Piraeus was 25.7°F. The maximum and minimum values were 24.1°F and 26.6°F respectively.

Piraeus on the Weather Map

Best Time to Visit Piraeus
The most sunny months:
July 30 days
August 30 days
June 27 days
The most warm months:
July 95.3 °F
August 94.4 °F
June 89.0 °F
Warmest sea temperature:
August 83.6 °F
July 82.3 °F
September 81.5 °F
The most cold months:
January 54.7 °F
February 57.1 °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
more details