Average sea water temperature in December:
+56.3°F
| Minimum sea water temperature in December: | 61.0°F |
| Maximum sea water temperature in December: | 52.9°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 56.5°F. The highest and lowest sea temperatures during the month were 58.1°F and 55.6°F.
Monthly sea water temperature in Opatija, °F
Which Croatia resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Lastovo | 63.6°F | 62.8°F |
| Komiza | 63.0°F | 62.4°F |
| Korcula | 62.5°F | 62.1°F |
| Hvar | 62.4°F | 62.2°F |
| Klek | 62.2°F | 61.8°F |
| Mlini | 62.2°F | 61.9°F |
| Plat | 62.2°F | 61.9°F |
| Cavtat | 62.1°F | 61.8°F |
| Dubrovnik | 61.8°F | 61.6°F |
| Stari Grad | 61.6°F | 62.0°F |
| Dugi Otok | 61.4°F | 61.1°F |
| Molat | 60.5°F | 60.6°F |
| Biograd na Moru | 60.4°F | 60.0°F |
| Vodice | 60.3°F | 60.9°F |
| Skradin | 60.0°F | 61.0°F |
| Sibenik | 59.9°F | 60.9°F |
| Mali Losinj | 59.5°F | 60.1°F |
| Trogir | 59.1°F | 60.4°F |
| Supetar | 59.0°F | 60.8°F |
| Zadar | 58.9°F | 58.8°F |
Best time for vacation in Opatija
Opatija on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Opatija
Local time: 10:10
December 23, tuesday
1200
50°F
SW
2 mph
2 mph
1500
50°F
S
5 mph
5 mph
1800
48°F
SW
6 mph
6 mph
2100
46°F
SW
7 mph
7 mph
December 24, wednesday
0000
43°F
SW
11 mph
11 mph
0300
37°F
SW
11 mph
11 mph
0600
37°F
SW
12 mph
12 mph
0900
39°F
SW
12 mph
12 mph
