Average sea water temperature in July:
+78.4°F
| Minimum sea water temperature in July: | 85.5°F |
| Maximum sea water temperature in July: | 72.3°F |
Daily sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 79.0°F. The highest and lowest sea temperatures during the month were 81.9°F and 76.8°F.
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| Portoroz |
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Monthly sea water temperature in Portoroz, °F
Which Slovenia resorts have warmest sea in July?
| Place name | July 2025 | July 2024 |
|---|---|---|
| Portoroz | 79.0°F | 80.4°F |
| Piran | 79.0°F | 80.4°F |
| Strunjan | 78.9°F | 80.2°F |
| Isola | 78.8°F | 80.0°F |
| Koper | 78.7°F | 80.2°F |
| Cerkno | 77.4°F | 77.8°F |
| Bohinjsko Jezero | 77.3°F | 77.6°F |
| Dolenjske Toplice | 76.3°F | 78.5°F |
Best time for vacation in Portoroz
Portoroz on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Portoroz
Local time: 10:30
December 18, thursday
1200

54°F
N
2 mph
2 mph
1500

54°F
E
2 mph
2 mph
1800

52°F
N
2 mph
2 mph
2100

46°F
N
1 mph
1 mph
December 19, friday
0000

46°F
NE
2 mph
2 mph
0300

46°F
N
2 mph
2 mph
0600

46°F
N
2 mph
2 mph
0900

46°F
NE
1 mph
1 mph



























