16.05
sat
sat
Day
70°F
NE 6 mph
Precip.
0%
0%
Night
64°F
SE 6 mph
Precip.
0%
0%
17.05
sun
sun
Day
72°F
SE 14 mph
Precip.
0%
0%
Night
64°F
NW 2 mph
Precip.
0%
0%
18.05
mon
mon
Day
72°F
NE 2 mph
Precip.
0%
0%
Night
64°F
NE 3 mph
Precip.
0%
0%
19.05
tue
tue
Day
70°F
N 7 mph
Precip.
0%
0%
Night
64°F
S 7 mph
Precip.
100%
100%
20.05
wed
wed
Day
73°F
S 13 mph
Precip.
0%
0%
Night
66°F
N 0 mph
Precip.
0%
0%
21.05
thu
thu
Day
73°F
SE 4 mph
Precip.
75%
75%
Night
66°F
SE 4 mph
Precip.
0%
0%
22.05
fri
fri
Day
72°F
E 2 mph
Precip.
100%
100%
Night
64°F
W 2 mph
Precip.
0%
0%
23.05
sat
sat
Day
72°F
NE 6 mph
Precip.
100%
100%
Night
66°F
NW 1 mph
Precip.
0%
0%
24.05
sun
sun
Day
73°F
NE 6 mph
Precip.
100%
100%
Night
66°F
NE 2 mph
Precip.
0%
0%
25.05
mon
mon
Day
75°F
NE 4 mph
Precip.
100%
100%
Night
68°F
SE 2 mph
Precip.
0%
0%
26.05
tue
tue
Day
70°F
E 4 mph
Precip.
100%
100%
Night
63°F
S 8 mph
Precip.
78%
78%
27.05
wed
wed
Day
66°F
S 14 mph
Precip.
66%
66%
Night
61°F
SW 6 mph
Precip.
0%
0%
28.05
thu
thu
Day
68°F
NE 2 mph
Precip.
0%
0%
Night
66°F
NE 2 mph
Precip.
0%
0%
29.05
fri
fri
Day
73°F
S 1 mph
Precip.
0%
0%
Night
70°F
W 2 mph
Precip.
0%
0%
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 63.6°F. The highest and lowest sea temperatures during the month were 66.0°F and 61.2°F.
Air temperature in Piraeus, °F
Precipitation total in Piraeus, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Piraeus
Piraeus on a weather map
Places in Greece:
Name
°F
24 Hours Forecast
Piraeus
Local time: 13:38
May 16, saturday
1500
70°F
N
4 mph
4 mph
1800
68°F
E
9 mph
9 mph
2100
64°F
SE
4 mph
4 mph
May 17, sunday
0000
64°F
SE
6 mph
6 mph
0300
64°F
E
6 mph
6 mph
0600
63°F
E
7 mph
7 mph
0900
66°F
E
14 mph
14 mph
1200
72°F
SE
14 mph
14 mph
