In December warmest sea in Monaco is usually observed in the following locations: Monaco, Monte Carlo, Fontvielle.
Table below shows the average sea water temperature for marine resorts of Monaco in December for the last three years.
| Place name | December 2025 | December 2024 | December 2023 |
|---|---|---|---|
| Monaco | 62.3°F | 61.4°F | 60.5°F |
| Monte Carlo | 62.3°F | 61.4°F | 60.5°F |
| Fontvielle | 62.3°F | 61.4°F | 60.5°F |
| La Condamine | 62.3°F | 61.4°F | 60.5°F |
Charts below show average sea water temperature for Monaco resorts with the warmest sea in December.
You can also check other months of the year to see sea temperature of Monaco resorts at that time.
