Current Sea Water Temperature:
+67.4°F
| Maximum Sea Water Temperature in October: | 73.6°F |
| Minimum Sea Water Temperature in October: | 62.2°F |
| Average water temperature in October: | 67.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| October 21 | 67.4°F | October 16 | 68.8°F |
| October 20 | 67.8°F | October 15 | 68.6°F |
| October 19 | 68.0°F | October 14 | 68.6°F |
| October 18 | 68.4°F | October 13 | 69.2°F |
| October 17 | 68.8°F | October 12 | 69.2°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 |  |
+64 |
| Brela | |
+64 |
| Dubrovnik | |
+60 |
| Istria |  |
+68 |
| Klek | |
+56 |
| Makarska |  |
+56 |
| Omis |  |
+60 |
| Porec | |
+68 |
| Pula | |
+64 |
| Rijeka | |
+64 |
| Rovinj | |
+66 |
| Split | |
+60 |
| Tucepi | |
+56 |
| Zadar |  |
+68 |
| Zagreb | |
+60 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Opatija
Local time: 04:14
22 oct, thursday
| 0600 |  |
62°F | N 5 mph |
| 0900 | |
60°F | W 9 mph |
| 1200 |  |
58°F | SW 14 mph |
| 1500 | |
54°F | SW 13 mph |
| 1800 | |
54°F | SW 11 mph |
| 2100 |  |
52°F | SW 11 mph |
23 oct, friday
| 0000 | |
50°F | SW 9 mph |
| 0300 | |
48°F | SW 9 mph |