Ionian Sea water temperature

Ionian Sea, Porto Cesareo · Sea/Coast

The current water temperature at Ionian Sea is 29.7 °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.

29.7 °C

Measured: September 1, 2026 · continuously updated

💧 Water 29.7° · ☀️ Air 26.5° · high today 33.0°

Temperature trend of recent weeks

Ionian Sea — Photo: Yellow.Cat from Roma, Italy · CC BY 2.0 · Wikimedia Commons

Water quality

EU classification: excellent

Measurement series & statistics

This measurement series includes 596 data points since July 3, 2026.

Lowest recorded value: 25.0 °C on July 6, 2026 · highest value: 30.4 °C on August 29, 2026.

Nearby waters

Ionian Sea, Gallipoli · 24.3 km away29.5 °C Adriatic Sea, Otranto · 52.0 km away29.1 °C Adriatic Sea, Otranto · 52.4 km away28.0 °C Ionian Sea, Taranto · 61.9 km away30.0 °C Ionian Sea, Santa Maria di Leuca · 64.8 km away29.7 °C

More measuring points: Ionian Sea

Scilla30.2 °C Taranto30.0 °C Preveza29.7 °C Santa Maria di Leuca29.7 °C Tropea29.7 °C Giardini Naxos / Taormina29.6 °C

Frequently asked questions

Can you swim at Ionian Sea right now?
The current water temperature is 29.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Ionian Sea?
Currently 29.7 °C (updated continuously).

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

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