In December warmest sea in Romania is usually observed in the following locations: Eforie Nord, Mangalia, Konstanta.
Table below shows the average sea water temperature for marine resorts of Romania in December for the last three years.
| Place name | December 2025 | December 2024 | December 2023 |
|---|---|---|---|
| Eforie Nord | 54.2°F | 50.6°F | 49.8°F |
| Mangalia | 53.9°F | 50.5°F | 49.6°F |
| Konstanta | 53.5°F | 49.7°F | 49.2°F |
| Mamaia | 53.5°F | 49.7°F | 49.3°F |
Charts below show average sea water temperature for Romania resorts with the warmest sea in December.
You can also check other months of the year to see sea temperature of Romania resorts at that time.
Places in Romania:
Name
°F
