Average sea water temperature in September:
+73.8°F
| Minimum sea water temperature in September: | 80.4°F |
| Maximum sea water temperature in September: | 68.7°F |
Daily sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 76.6°F. The highest and lowest sea temperatures during the month were 80.4°F and 72.5°F.
Monthly sea water temperature in Istria, °F
Which Croatia resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Plat | 79.6°F | 77.0°F |
| Mlini | 79.6°F | 77.0°F |
| Cavtat | 79.6°F | 77.0°F |
| Dubrovnik | 79.0°F | 76.7°F |
| Lastovo | 78.6°F | 76.8°F |
| Novigrad | 78.3°F | 75.8°F |
| Komiza | 78.2°F | 75.7°F |
| Rovinj | 78.1°F | 75.9°F |
| Porec | 78.1°F | 75.8°F |
| Umag | 78.1°F | 75.7°F |
| Vrsar | 78.0°F | 75.8°F |
| Pula | 77.8°F | 75.5°F |
| Hvar | 77.7°F | 75.6°F |
| Tucepi | 77.6°F | 74.7°F |
| Stari Grad | 77.5°F | 75.5°F |
| Korcula | 77.5°F | 75.9°F |
| Makarska | 77.5°F | 74.7°F |
| Dugi Otok | 77.4°F | 75.5°F |
| Split | 77.1°F | 74.6°F |
| Trogir | 77.0°F | 74.6°F |
Best time for vacation in Istria
Istria on a weather map
Places in Croatia:
Name
°F
24 Hours Forecast
Istria
Local time: 15:51
October 04, sunday
1800
70°F
SE
5 mph
5 mph
2100
66°F
SW
5 mph
5 mph
October 05, monday
0000
64°F
SW
6 mph
6 mph
0300
64°F
SW
5 mph
5 mph
0600
64°F
SW
4 mph
4 mph
0900
64°F
SW
3 mph
3 mph
1200
68°F
S
4 mph
4 mph
1500
68°F
S
6 mph
6 mph
