Sea temperature in Kos in July
The sea around Kos averages 25°C in July, usually between 23°C and 27°C. That is warm enough for most people to swim comfortably.
Average25°CWarm
Usual range23°C–27°C80% of readings
vs June+2.3°warmer
vs August+1.4°warmer next month
Through the year
Monthly averages 2023–2025. Water at 22°C or warmer: June–November.
July in recent years
| 2023 | 24°C |
|---|---|
| 2024 | 25°C |
| 2025 | 25°C |
Nearby in July
Beaches in Kos
15 of 16 beaches have an Excellent EU water-quality grade. See which ones are calm today.