Sea temperature Opatija today
Updated 06.06.2026 18:15 • Live
Sea temperature
22,1°C
Waves 0,0 m · period 3,6 s
Wave height
0,0 m
Period 3,6 s
Wave direction
S
174°
Wind waves
0,0 m
Sea current
0,0 km/h
Direction E
Swell height
0,0 m
Swell direction
S
174°
Air temperature
24°C
Partly cloudy · Feels like: 25°C
Wind
5 km/h
S 188°
Wind gusts
14 km/h
Pressure 1013 hPa
Humidity
53 %
UV indeks
2,9
Moderate
Visibility
> 10 km
Cloud cover
59 %
Weather and sea for the next 7 days - Opatija
Today, 6.6
Light showers
Air
25°C
min 19°C
Sea temperature
21,9°C
min 21,0°C
Tomorrow, 7.6
Cloudy
Air
29°C
min 19°C
Sea temperature
22,4°C
min 21,1°C
Mon, 8.6
Cloudy
Air
30°C
min 20°C
Sea temperature
22,8°C
min 21,5°C
Tue, 9.6
Cloudy
Air
28°C
min 18°C
Sea temperature
23,2°C
min 22,0°C
Wed, 10.6
Light showers
Air
28°C
min 21°C
Sea temperature
23,2°C
min 22,5°C
Thu, 11.6
Thunderstorm
Air
21°C
min 18°C
Sea temperature
22,5°C
min 22,4°C
Fri, 12.6
Light showers
Air
18°C
min 17°C
Sea temperature
22,5°C
min 22,1°C
Sea temperature Opatija by month
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature | 13° | 12° | 12° | 14° | 18° | 22° | 25° | 25° | 23° | 20° | 17° | 15° |
When to swim in Opatija?
Swimming season
Jun – Oct
Sea temperature above 18 °C
Warmest month
Jul
Average 25°C
Coldest month
Feb
Average 12°C
Annual average
18°C
Average sea temperature