Current sea water temperature:
+66.2°F
| Minimum sea water temperature in December: | 69.1°F |
| Maximum sea water temperature in December: | 59.4°F |
| Average sea water temperature in December: | 64.2°F |
| more information | |
14 days
forecast
forecast
| Piraeus |
monthly
weather
weather
| Piraeus |
Sea water temperature for the last 10 days:
| December 14 | 66.2°F | December 9 | 66.6°F |
| December 13 | 66.2°F | December 8 | 66.6°F |
| December 12 | 66.2°F | December 7 | 66.7°F |
| December 11 | 66.4°F | December 6 | 66.9°F |
| December 10 | 66.2°F | December 5 | 66.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Piraeus?
Based on the data about daily sea water temperature for the last three years the warmest sea in Piraeus was noticed in August, July and September.
Monthly Sea Temperatures in Piraeus, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 79.6°F. The highest and lowest sea temperatures during the month were 81.3°F and 78.1°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 79.0°F. The highest and lowest sea temperatures during the month were 83.3°F and 76.1°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 78.2°F. The highest and lowest sea temperatures during the month were 79.9°F and 75.4°F.
current
weather
weather
| Piraeus |
weather in
December
December
| Piraeus |
Best time for vacation in Piraeus
Piraeus on a weather map
Places in Greece:
Name
°F
24 Hours Forecast
Piraeus
Local time: 04:17
December 15, monday
0600
50°F
S
7 mph
7 mph
0900
52°F
S
7 mph
7 mph
1200
57°F
S
7 mph
7 mph
1500
57°F
S
9 mph
9 mph
1800
54°F
S
8 mph
8 mph
2100
52°F
S
8 mph
8 mph
December 16, tuesday
0000
50°F
S
7 mph
7 mph
0300
50°F
S
7 mph
7 mph
