This is a climate-model estimate, not a measurement: we have no measured water temperature for rivers, lakes and reservoirs yet. Real measurements are available for seas only.
Bite in Kos today — good 🎣
Pressure is steady, water +29° — most active: mullet and horse mackerel. Forecast by fish species and for the week ahead.
Bite forecast →
Water bodies in Kos 🌊
Map of water bodies in Kos
Water temperature in Kos for a month
There is no exact monthly water forecast — the reference is the climate normal: in summer the water warms to about +18°. The monthly normal is below.
Monthly water temperature in Kos 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +9 | +10 | +9 | +10 | +12 | +16 | +18 | +18 | +19 | +17 | +13 | +11 |
Climate normal (model estimate).
Water temperature archive in Kos on this day
| Year | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Water | +29° | +30° | +31° | +30° | +30° | +29° | +29° | +30° | +30° | +31° |
Climate normal (model estimate for this date), not a measurement archive.
When to swim in Kos 🏖️
Where else to swim nearby 🏝️
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FAQ about water in Kos ❓
What is the water temperature in Kos now?
Now +31° — Warm water.
When to swim in Kos?
Comfortable season — from July to October.
When is the water in Kos warmest?
Warmest in September — up to +19°.
What bodies of water are there in Kos?
Mediterranean Sea.
Water temperature in Kos — in detail
A summary page of water temperature across all bodies of water in Kos: Mediterranean Sea. Now about +31°. For seas the temperature is measured SST; for rivers and lakes it is a climate estimate.