Current sea water temperature:
+54.1°F
| Minimum sea water temperature in January: | 56.8°F |
| Maximum sea water temperature in January: | 50.2°F |
| Average sea water temperature in January: | 53.1°F |
| more information | |
14 days
forecast
forecast
| Opatija |
monthly
weather
weather
| Opatija |
Sea water temperature for the last 10 days:
| January 13 | 54.1°F | January 8 | 55.0°F |
| January 12 | 54.5°F | January 7 | 55.2°F |
| January 11 | 54.5°F | January 6 | 54.7°F |
| January 10 | 54.0°F | January 5 | 55.0°F |
| January 9 | 54.3°F | January 4 | 55.6°F |
Monthly sea water temperature, °F
When is the warmest sea in Opatija?
Based on the data about daily sea water temperature for the last three years the warmest sea in Opatija was noticed in August, July and September.
Monthly Sea Temperatures in Opatija, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.7°F. The highest and lowest sea temperatures during the month were 77.0°F and 71.8°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 75.8°F. The highest and lowest sea temperatures during the month were 77.2°F and 73.6°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 72.4°F. The highest and lowest sea temperatures during the month were 73.6°F and 70.9°F.
current
weather
weather
| Opatija |
weather in
January
January
| Opatija |
Best time for vacation in Opatija
Opatija on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Opatija
Local time: 19:09
January 13, tuesday
2100
41°F
N
1 mph
1 mph
January 14, wednesday
0000
43°F
N
2 mph
2 mph
0300
37°F
NE
2 mph
2 mph
0600
37°F
NE
2 mph
2 mph
0900
39°F
NE
2 mph
2 mph
1200
43°F
NE
3 mph
3 mph
1500
45°F
NE
3 mph
3 mph
1800
45°F
NE
2 mph
2 mph
