In December warmest sea in San Marino is usually observed in the following locations: Borgo Maggiore, Chiesanuova, Acquaviva.
Table below shows the average sea water temperature for marine resorts of San Marino in December for the last three years.
| Place name | December 2025 | December 2024 | December 2023 |
|---|---|---|---|
| Borgo Maggiore | 50.9°F | 51.7°F | 52.1°F |
| Chiesanuova | 50.9°F | 51.7°F | 52.1°F |
| Acquaviva | 50.9°F | 51.7°F | 52.1°F |
| Serravalle | 50.9°F | 51.7°F | 52.1°F |
| San Marino | 50.8°F | 51.7°F | 52.1°F |
| Faetano | 50.8°F | 51.7°F | 52.1°F |
| Mentegiardino | 50.8°F | 51.7°F | 52.1°F |
| Domagnano | 50.8°F | 51.7°F | 52.1°F |
| Fiorentino | 50.8°F | 51.7°F | 52.1°F |
Charts below show average sea water temperature for San Marino resorts with the warmest sea in December.
You can also check other months of the year to see sea temperature of San Marino resorts at that time.
Places in San Marino:
Name
°F
