#1 in December
16.2°C
NOAA Season Curve (May–Oct):
M
18.0°
J
21.9°
J
24.2°
A
24.8°
S
23.0°
O
20.9°
N
18.6°
NOAA SATELLITE DATA (1991–2020 30-YEAR CLIMATOLOGY)
HRCroatia Sea Temperature in December
Historical 30-year sea surface temperatures across 71 coastlines in Croatia for December. Derived from NOAA 0.25° blended satellite and in-situ marine observations.
Climatology Notice: Temperatures represent the 30-year long-term historical average (1991–2020 normal), not a live single-day sensor forecast.
14.7°C
Bracing / Crispaverage across 71 surveyed coastlines in Croatia, December
- Ranges 12.9°C at Sipar Beach (Mošćenička Draga) to 16.2°C at Zlatni Rat.
- None of Croatia’s 71 surveyed coastlines reach the 21°C swim threshold in December.
- On the national average, the water is above 21°C from 4 Jun to 7 Oct — about 124 days a year.
- 10.5°C cooler than Croatia’s August peak of 25.2°C (see August).
Select Month
View 12-Month Annual Overview →Adriatic Karst Inflows & Island Archipelago Circulation
The eastern Adriatic coast features deep karst topography with submerged freshwater springs (vrulje) that discharge cold mountain runoff into select coves. However, protected channels between the Dalmatian islands (Hvar, Brač, Korčula) trap summer solar heat, yielding comfortable 24.5–25.0°C August bathing temperatures.
Oceanographic Phenomenon:Subterranean Vrulja Springs & Island Shelter
Thermal Lag Characteristic:Moderate Adriatic thermal lag: the shallow basin warms rapidly in June and cools faster in late autumn under the influence of cold northeasterly Bora winds.
Peak Bathing Average:August (24.8°C)
Croatia Beaches in December
Individual coordinate lookups from NOAA 0.25° marine grid.
Showing 71 coastlines
Explore Sea Temperatures by Country
Spain(23.6°C)Italy(25.9°C)Turkey(27.3°C)France(22.4°C)Greece(25.4°C)Cyprus(27.7°C)Croatia(25.2°C)Albania(25.5°C)Montenegro(25.7°C)Malta(26.7°C)Bulgaria(25.1°C)Romania(24.7°C)Slovenia(25.4°C)Portugal(20.7°C)Poland(19°C)Sweden(18.3°C)Netherlands(18.5°C)Bosnia & Herzegovina(25.2°C)Monaco(24.6°C)Latvia(18.5°C)Estonia(18°C)Lithuania(18.8°C)Germany(18.6°C)Denmark(18°C)Norway(15.3°C)Belgium(18.7°C)Faroe Islands(10.9°C)United Kingdom(16.1°C)Ireland(15.9°C)Iceland(10.9°C)Finland(16.6°C)
