Sea temperature in Piraeus in June
The sea around Piraeus averages 23°C in June, usually between 20°C and 26°C. That is pleasant for swimming, refreshing at first.
Average23°CRefreshing
Usual range20°C–26°C80% of readings
vs May+4.4°warmer
vs July+3.2°warmer next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–October.
June in recent years
| 2023 | 23°C |
|---|---|
| 2024 | 24°C |
| 2025 | 23°C |
Nearby in June
Beaches in Piraeus
104 of 104 beaches have an Excellent EU water-quality grade. See which ones are calm today.