Sea temperature in Skiathos in August
The sea around Skiathos averages 27°C in August, usually between 26°C and 28°C. That is warm enough for most people to swim comfortably.
Average27°CWarm
Usual range26°C–28°C80% of readings
vs July−0.2°cooler
vs September−1.7°cooler next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–October.
August in recent years
| 2023 | 27°C |
|---|---|
| 2024 | 28°C |
| 2025 | 26°C |
Nearby in August
Beaches in Skiathos
13 of 13 beaches have an Excellent EU water-quality grade. See which ones are calm today.