21.12
sun
sun
Day
46°F
SW 3 mph
Precip.
0%
0%
Night
39°F
SW 6 mph
Precip.
0%
0%
22.12
mon
mon
Day
52°F
W 1 mph
Precip.
0%
0%
Night
50°F
W 2 mph
Precip.
0%
0%
23.12
tue
tue
Day
50°F
SW 2 mph
Precip.
100%
100%
Night
45°F
SW 6 mph
Precip.
100%
100%
24.12
wed
wed
Day
43°F
SW 13 mph
Precip.
100%
100%
Night
36°F
SW 10 mph
Precip.
65%
65%
25.12
thu
thu
Day
41°F
SW 9 mph
Precip.
64%
64%
Night
34°F
SW 9 mph
Precip.
0%
0%
26.12
fri
fri
Day
43°F
SW 7 mph
Precip.
0%
0%
Night
36°F
SW 9 mph
Precip.
0%
0%
27.12
sat
sat
Day
41°F
SW 8 mph
Precip.
0%
0%
Night
34°F
SW 5 mph
Precip.
0%
0%
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.
Sea water temperature in January, °F
Show year:
2025
2024
2023
The average sea water temperature in January of 2025 was 53.6°F. The highest and lowest sea temperatures during the month were 55.2°F and 52.0°F.
Air temperature in Opatija, °F
Precipitation total in Opatija, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Opatija
Opatija on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Opatija
Local time: 12:33
December 21, sunday
1500
50°F
SW
2 mph
2 mph
1800
45°F
SW
6 mph
6 mph
2100
43°F
SW
6 mph
6 mph
December 22, monday
0000
39°F
SW
6 mph
6 mph
0300
37°F
SW
6 mph
6 mph
0600
37°F
SW
5 mph
5 mph
0900
41°F
SW
4 mph
4 mph
1200
52°F
W
1 mph
1 mph
