In March warmest sea in Slovenia is usually observed in the following locations: Dolenjske Toplice, Portoroz, Piran.
Table below shows the average sea water temperature for marine resorts of Slovenia in March for the last three years.
| Place name | March 2026 | March 2025 | March 2024 |
|---|---|---|---|
| Dolenjske Toplice | 52.7°F | 52.4°F | 54.7°F |
| Portoroz | 52.1°F | 51.7°F | 53.6°F |
| Piran | 52.1°F | 51.7°F | 53.6°F |
| Strunjan | 52.0°F | 51.6°F | 53.4°F |
| Isola | 51.8°F | 51.4°F | 53.3°F |
| Koper | 51.8°F | 51.4°F | 53.4°F |
| Cerkno | 51.7°F | 50.8°F | 53.0°F |
| Bohinjsko Jezero | 51.7°F | 50.7°F | 52.9°F |
Charts below show average sea water temperature for Slovenia resorts with the warmest sea in March.
You can also check other months of the year to see sea temperature of Slovenia resorts at that time.
Places in Slovenia:
Name
°F
