Current Sea Water Temperature:
+80.8°F
| Maximum Sea Water Temperature in July: | 89.4°F |
| Minimum Sea Water Temperature in July: | 74.8°F |
| Average water temperature in July: | 81.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| July 20 | 80.8°F | July 15 | 80.6°F |
| July 19 | 80.2°F | July 14 | 79.8°F |
| July 18 | 80.6°F | July 13 | 80.6°F |
| July 17 | 81.2°F | July 12 | 80.6°F |
| July 16 | 82.2°F | July 11 | 81.4°F |
When is the Warmest Sea for Portoroz?
According to our data for the last three years for Portoroz 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 2024 for Portoroz was 85.5°F. The maximum and minimum values were 83.4°F and 88.6°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Portoroz was 82.1°F. The maximum and minimum values were 79.8°F and 85.4°F respectively.
Sea Water Temperature in September
The average sea surface temperature in September 2024 for Portoroz was 78.8°F. The maximum and minimum values were 72.0°F and 86.6°F respectively.
Slovenia Resorts:
NAME
F°
| Bled |  |
+78 |
| Bohinjsko Jezero | |
+78 |
| Cerkno |  |
+86 |
| Dolenjske Toplice | |
+92 |
| Isola | |
+90 |
| Koper | |
+90 |
| Kranjska Gora | |
+78 |
| Ljubljana | |
+90 |
| Maribor | |
+88 |
| Piran | |
+90 |
| Portoroz | |
+90 |
| Postojna | |
+86 |
| Rogaska Slatina | |
+90 |
| Smarjeske Toplice | |
+92 |
| Strunjan | |
+90 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Portoroz
Local time: 12:05
20 jul, sunday
| 1500 |  |
88°F | E 6 mph |
| 1800 | |
84°F | E 4 mph |
| 2100 |  |
76°F | W 3 mph |
21 jul, monday
| 0000 | |
74°F | W 3 mph |
| 0300 | |
74°F | W 4 mph |
| 0600 | |
74°F | NW 5 mph |
| 0900 |  |
84°F | N 8 mph |
| 1200 |  |
88°F | NE 12 mph |