Ionian Sea water temperature

Ionian Sea, Kalamata · Sea/Coast

The current water temperature at Ionian Sea is 28.5 °C (as of September 1, 2026, source: Open-Meteo marine model).

The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.

28.5 °C

Measured: September 1, 2026 · continuously updated

💧 Water 28.5° · ☀️ Air 25.2° · high today 31.0°

Temperature trend of recent weeks

Water quality

EU classification: excellent

Measurement series & statistics

This measurement series includes 595 data points since July 3, 2026.

Lowest recorded value: 26.4 °C on July 3, 2026 · highest value: 29.6 °C on July 22, 2026.

Nearby waters

Ionian Sea, Costa Navarino · 36.9 km away28.6 °C Mediterranean, Gythio · 50.8 km away27.7 °C Mediterranean, Nafplio · 85.1 km away27.9 °C Mediterranean, Tolo · 85.4 km away27.8 °C Mediterranean, Monemvasia · 92.2 km away27.0 °C

More measuring points: Ionian Sea

Scilla30.2 °C Taranto30.0 °C Porto Cesareo29.7 °C Preveza29.7 °C Santa Maria di Leuca29.7 °C Tropea29.7 °C

Frequently asked questions

Can you swim at Ionian Sea right now?
The current water temperature is 28.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Ionian Sea?
Currently 28.5 °C (updated continuously).

How is the water quality at Ionian Sea?
The official classification is: excellent.

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