Current sea water temperature:
+54.5°F
| Minimum sea water temperature in April: | 63.9°F |
| Maximum sea water temperature in April: | 49.6°F |
| Average sea water temperature in April: | 55.8°F |
| more information | |
14 days
forecast
forecast
| Opatija |
monthly
weather
weather
| Opatija |
Sea water temperature for the last 10 days:
| April 6 | 54.5°F | April 1 | 54.0°F |
| April 5 | 54.3°F | March 31 | 53.8°F |
| April 4 | 53.4°F | March 30 | 54.0°F |
| April 3 | 53.2°F | March 29 | 54.1°F |
| April 2 | 54.0°F | March 28 | 54.5°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
April
April
| Opatija |
Best time for vacation in Opatija
Opatija on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Opatija
Local time: 11:59
April 06, monday
1200
64°F
NE
2 mph
2 mph
1500
64°F
NE
3 mph
3 mph
1800
61°F
N
2 mph
2 mph
2100
50°F
SW
2 mph
2 mph
April 07, tuesday
0000
50°F
S
3 mph
3 mph
0300
48°F
SW
3 mph
3 mph
0600
46°F
SW
4 mph
4 mph
0900
57°F
SW
3 mph
3 mph
