Current Sea Water Temperature:
+71.6°F
| Maximum Sea Water Temperature in October: | 73.6°F |
| Minimum Sea Water Temperature in October: | 62.2°F |
| Average water temperature in October: | 67.4°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| October 01 | 71.6°F | September 26 | 73.0°F |
| September 30 | 72.2°F | September 25 | 73.6°F |
| September 29 | 72.6°F | September 24 | 73.4°F |
| September 28 | 72.4°F | September 23 | 74.4°F |
| September 27 | 73.0°F | September 22 | 75.4°F |
When is the Warmest Sea for Opatija?
According to our data for the last three years for Opatija the highest average sea water temperature was in August, July and September.
Average Water Temperature by Month, °F
Sea Water Temperature in August
The average sea surface temperature in August 2026 for Opatija was 81.7°F. The maximum and minimum values were 78.2°F and 84.6°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2026 for Opatija was 79.9°F. The maximum and minimum values were 77.8°F and 83.2°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2026 for Opatija was 77.3°F. The maximum and minimum values were 72.2°F and 81.6°F respectively.
Croatia Resorts:
NAME
F°
| Baska Voda |  |
+68 |
| Brela | |
+68 |
| Crikvenica |  |
+62 |
| Dubrovnik | |
+64 |
| Istria |  |
+70 |
| Klek | |
+60 |
| Makarska | |
+54 |
| Omis | |
+64 |
| Porec | |
+70 |
| Pula | |
+64 |
| Rovinj | |
+66 |
| Split | |
+64 |
| Tucepi | |
+54 |
| Zadar | |
+70 |
| Zagreb | |
+62 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Opatija
Local time: 23:36
02 oct, friday
| 0000 |  |
64°F | SW 11 mph |
| 0300 | |
62°F | SW 11 mph |
| 0600 | |
62°F | SW 12 mph |
| 0900 | |
64°F | SW 9 mph |
| 1200 | |
72°F | SW 8 mph |
| 1500 |  |
74°F | SW 8 mph |
| 1800 | |
70°F | SW 9 mph |
| 2100 | |
64°F | SW 11 mph |