Water temperature of the Adriatic Sea in december Where to swim in the Adriatic Sea in december 2025?

Several countries border the seaside of the Adriatic Sea, including: Albania, Bosnia And Herzegovina, Corfu Island, Croatia, Croatian islands, Italy, Montenegro and Slovenia. We measure the water temperature daily in these countries and archive it in order to calculate monthly averages, like those of the month of december.

The seasonal average for the water temperature in the month of december is between 56°F and 63°F. The lowest sea temperature measured this month is 52°F and the highest is 67°F.

The sea temperature map of the Adriatic Sea in december

The map below presents a monthly average of the water temperature of the Adriatic Sea for the month of december for several coastal cities. You can zoom and move around on the map. By clicking on the markers, you can see sea temperature details by city in december.