Baltic Sea water temperature

Baltic Sea, Lysingsbadet, Judön sandstrand · Sea/Coast

The current water temperature at Baltic Sea is 9.5 °C (as of October 16, 2026, source: official monitoring networks).

Official sample from July 27, 2026: 20.0 °C · current reading from Västervik (1093 m away).

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

9.5 °C

Measured: October 16, 2026 · continuously updated

💧 Water 9.5° · ☀️ Air 14.9°

Baltic Sea — Photo: M-R.A · CC BY 3.0 · Wikimedia Commons

Water quality

EU classification: excellent

Nearby waters

Baltic Sea, Västervik · 1.1 km away9.5 °C Baltic Sea, Gränsö, Sandvikens badplats · 2.1 km away9.5 °C Baltic Sea, Gränsö, Bondbackens badplats · 3.1 km away9.5 °C Baltic Sea, Hallmare havsbad · 15.6 km away16.0 °C Baltic Sea, Tättö Havsbad · 16.9 km away16.0 °C

More measuring points: Baltic Sea

Färjestaden, Granudden/Talludd22.0 °C Hägernäsbadet22.0 °C Näsaängsbadet22.0 °C Eriksöre camping, Eriksöre21.0 °C Saxnäs21.0 °C Grisslinge havsbad20.3 °C

Frequently asked questions

Can you swim at Baltic Sea right now?
The current water temperature is 9.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Baltic Sea?
Currently 9.5 °C (updated continuously).

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

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