Average sea water temperature in October:
+67.5°F
| Minimum sea water temperature in October: | 73.6°F |
| Maximum sea water temperature in October: | 61.7°F |
Daily sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 67.1°F. The highest and lowest sea temperatures during the month were 72.7°F and 63.0°F.
sea water
temperature
temperature
| Portoroz |
monthly
weather
weather
| Portoroz |
current
weather
weather
| Portoroz |
14 days
forecast
forecast
| Portoroz |
Monthly sea water temperature in Portoroz, °F
Which Slovenia resorts have warmest sea in October?
| Place name | October 2025 | October 2024 |
|---|---|---|
| Portoroz | 67.1°F | 67.1°F |
| Piran | 67.1°F | 67.1°F |
| Strunjan | 67.0°F | 67.0°F |
| Isola | 66.9°F | 67.0°F |
| Koper | 66.9°F | 66.8°F |
| Cerkno | 65.6°F | 65.6°F |
| Bohinjsko Jezero | 65.4°F | 65.5°F |
| Dolenjske Toplice | 65.4°F | 65.2°F |
Best time for vacation in Portoroz
Portoroz on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Portoroz
Local time: 02:03
June 11, thursday
0300

55°F
W
7 mph
7 mph
0600

52°F
W
7 mph
7 mph
0900

61°F
SW
9 mph
9 mph
1200

68°F
SW
12 mph
12 mph
1500

64°F
SW
14 mph
14 mph
1800

68°F
SW
13 mph
13 mph
2100

59°F
SW
9 mph
9 mph
June 12, friday
0000

54°F
SW
6 mph
6 mph


























