Baltic Sea water temperature

Baltic Sea, Tofta · Sea/Coast

The current water temperature at Baltic Sea is 18.3 °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.

18.3 °C

Measured: September 1, 2026 · continuously updated

💧 Water 18.3° · ☀️ Air 15.4° · high today 18.6°

Temperature trend of recent weeks

Measurement series & statistics

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

Lowest recorded value: 8.5 °C on July 9, 2026 · highest value: 21.1 °C on July 3, 2026.

Nearby waters

Baltic Sea, Norderstrand (Visby) · 16.5 km away18.2 °C Baltic Sea, Böda Sand · 72.0 km away17.0 °C Baltic Sea, Böda Riviera/ Kyrketorps familjecamping · 72.6 km away17.0 °C Baltic Sea, Böda hamn · 72.8 km away17.0 °C Baltic Sea, Sudersand (Fårö) · 73.0 km away18.4 °C

More measuring points: Baltic Sea

Färjestaden, Granudden/Talludd22.0 °C Hägernäsbadet22.0 °C Näsaängsbadet22.0 °C Eriksöre camping, Eriksöre21.0 °C Nickstabadet21.0 °C Saxnäs21.0 °C

Frequently asked questions

Can you swim at Baltic Sea right now?
The current water temperature is 18.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Baltic Sea?
Currently 18.3 °C (updated continuously).

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