30.12
tue
tue
Day
41°F
SW 10 mph
Precip.
0%
0%
Night
32°F
SW 8 mph
Precip.
0%
0%
31.12
wed
wed
Day
36°F
SW 4 mph
Precip.
0%
0%
Night
32°F
S 1 mph
Precip.
0%
0%
01.01
thu
thu
Day
37°F
N 6 mph
Precip.
100%
100%
Night
39°F
NE 7 mph
Precip.
100%
100%
02.01
fri
fri
Day
37°F
NE 4 mph
Precip.
100%
100%
Night
39°F
NE 2 mph
Precip.
100%
100%
03.01
sat
sat
Day
46°F
N 22 mph
Precip.
100%
100%
Night
50°F
NE 19 mph
Precip.
100%
100%
04.01
sun
sun
Day
34°F
W 11 mph
Precip.
100%
100%
Night
27°F
SW 16 mph
Precip.
100%
100%
05.01
mon
mon
Day
27°F
SW 12 mph
Precip.
100%
100%
Night
25°F
SW 11 mph
Precip.
47%
47%
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 55.4°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: 05:34
December 30, tuesday
0600
34°F
SW
4 mph
4 mph
0900
36°F
SW
7 mph
7 mph
1200
41°F
SW
10 mph
10 mph
1500
41°F
SW
14 mph
14 mph
1800
36°F
SW
14 mph
14 mph
2100
34°F
W
12 mph
12 mph
December 31, wednesday
0000
32°F
SW
8 mph
8 mph
0300
27°F
SW
7 mph
7 mph
