Ionian Sea water temperature
Ionian Sea, Borsh · Sea/Coast
The current water temperature at Ionian Sea is 23.6 °C (as of October 16, 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.
Water quality
EU classification: excellentMeasurement series & statistics
This measurement series includes 799 data points since August 17, 2026.
Lowest recorded value: 23.5 °C on October 16, 2026 · highest value: 29.9 °C on August 29, 2026.
In October, temperatures have ranged between 23.5 °C and 25.1 °C.
The current value is 0.8 °C below the October average of this series.
Nearby waters
More measuring points: Ionian Sea
Frequently asked questions
Can you swim at Ionian Sea right now?
The current water temperature is 23.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Ionian Sea?
Currently 23.6 °C (updated continuously).
How warm is at Ionian Sea in October?
In October, the water temperature recently averaged 24.4 °C.
When is the water warmest at Ionian Sea?
Across the measurement record, August is on average the warmest month (29.1 °C).
How is the water quality at Ionian Sea?
The official classification is: excellent.
