Baltic Sea water temperature

Baltic Sea, Tanto, strand 1 · Sea/Coast

The current water temperature at Baltic Sea is 18.0 °C (as of August 9, 2026, source: official monitoring networks).

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

18.0 °C

Measured: August 9, 2026 · continuously updated

💧 Water 18.0° · ☀️ Air 16.9° · high today 20.1°

Temperature trend of recent weeks

Baltic Sea — Photo: Jules Verne Times Two · CC BY-SA 4.0 · Wikimedia Commons

Water quality

EU classification: excellent

Measurement series & statistics

This measurement series includes 8 data points since July 5, 2026.

Lowest recorded value: 18.0 °C on August 9, 2026 · highest value: 25.0 °C on July 15, 2026.

Nearby waters

Tanto, brygga · 0.1 km away18.0 °C Baltic Sea, Tanto, strand 2 · 0.1 km away18.0 °C Marieviksbadet: barnbassäng · 0.4 km away19.0 °C Marieviksbadet: lekbassäng · 0.5 km away20.0 °C Sjövikskajens bryggbad · 0.6 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 18.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Baltic Sea?
Currently 18.0 °C (updated continuously).

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

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