The Slovenia resorts with the warmest sea water temperature in November are Portoroz, Piran and Strunjan.
Below you can see a list of all popular Slovenia resorts and information about sea water temperature in November for the last two years.
| Resort Name | November 2025 | November 2024 | November 2023 |
|---|---|---|---|
| Portoroz | 62.9°F | 64.2°F | 65.1°F |
| Piran | 62.9°F | 64.2°F | 65.1°F |
| Strunjan | 62.5°F | 63.9°F | 64.7°F |
| Isola | 62.3°F | 63.6°F | 64.3°F |
| Koper | 62.1°F | 63.5°F | 63.9°F |
| Dolenjske Toplice | 61.7°F | 63.1°F | 64.1°F |
| Cerkno | 60.5°F | 61.3°F | 61.4°F |
| Bohinjsko Jezero | 60.2°F | 61.1°F | 61.2°F |
Please see following sea water temperature averages charts for the warmest Slovenia resorts in November.
You can also get the same information for the every other month of the year when the average sea water temperature is greater then 70°F.
Slovenia Resorts:
NAME
F°
| Bohinjsko Jezero |  |
+32 |
| Cerkno |  |
+42 |
| Dolenjske Toplice |  |
+34 |
| Isola | |
+42 |
| Koper | |
+42 |
| Kranjska Gora | |
+32 |
| Ljubljana | |
+36 |
| Maribor | |
+34 |
| Moravske Toplice | |
+38 |
| Piran | |
+42 |
| Portoroz | |
+42 |
| Rogaska Slatina | |
+34 |
| Strunjan | |
+42 |
| Terme Radenci | |
+34 |
| Zrece | |
+34 |
