Baltic Sea water temperature

Baltic Sea, Gdańsk · River

The current water temperature at Baltic Sea is 18.5 °C (as of August 31, 2026, source: IMGW).

A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.

18.5 °C

Measured: August 31, 2026 · continuously updated

💧 Water 18.5° · ☀️ Air 16.7° · high today 18.9°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 55 data points since July 8, 2026.

Lowest recorded value: 17.8 °C on July 8, 2026 · highest value: 20.4 °C on August 7, 2026.

Nearby waters

Baltic Sea, Sopot · 9.9 km away19.2 °C Baltic Sea, Gdynia · 16.1 km away19.0 °C Baltic Sea, Gdynia · 16.1 km away19.2 °C Baltic Sea, Hel · 23.5 km away19.0 °C Baltic Sea, Jastarnia · 33.4 km away19.0 °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 18.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Baltic Sea?
Currently 18.5 °C (updated continuously).

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