Baltic Water Temperature

Live Baltic Sea water temperatures for 53 cities across 9 countries and no accounts or logins required. Free, ad-free, and accurate — because the Baltic doesn't bluff.

Know before you go.

Baltic Water Temperature shows you the real sea surface temperature — pulled from oceanographic data sources, not estimated from air temperature. Open the app, see the map. Every pin shows today's water temperature. Tap to dive in

53 CITIES. 9 COUNTRIES.

Sweden, Finland, Denmark, Germany, Poland, Latvia, Lithuania, Estonia, Russia — every major coastal city and seaside resort along the Baltic is covered. From Saint Petersburg to Hanko, from Nida to Binz, from Sopot to Kuressaare.

BEACHES Each city includes a curated list of its most popular beaches, with photos, a map pin, and distance from the city centre. Tap once to open any beach in Apple Maps and get directions.

7-DAY CHART See the full temperature trend — not just today's number. Know whether the water is warming up or cooling off before you pack a bag.

9 LANGUAGES Every label, menu, and message is available in English, Russian, German, Polish, Lithuanian, Latvian, Finnish, Swedish, and Dutch. The app follows your iPhone's language automatically, and you can switch manually at any time.

FREE. AD-FREE. ALWAYS. Baltic Water Temperature is completely free and contains no advertising, no tracking, and no subscriptions. There's a fully optional tip jar if you'd like to support development — it unlocks nothing, because nothing is locked.

ALSO

• Three app icon styles — default, cold, or warm — or let the app choose automatically based on the current water temperature • Water-drop sound effects when browsing cities (can be toggled off) • A hidden easter egg. Five taps on the logo. You'll know it when you see it.

DATA SOURCES

Sea temperatures come from ERDDAP (NOAA/Copernicus oceanographic databases) and Open-Meteo — the same sources used by researchers, not a weather widget. Beach photos from Wikimedia Commons.