The Northern Mariana Islands resorts with the warmest sea water temperature in January are Rota, Saipan and Susupe.
Below you can see a list of all popular Northern Mariana Islands resorts and information about sea water temperature in January for the last two years.
| Resort Name | January 2026 | January 2025 | January 2024 |
|---|---|---|---|
| Rota | 87.2°F | 87.3°F | 86.9°F |
| Saipan | 87.1°F | 87.3°F | 86.5°F |
| Susupe | 87.1°F | 87.2°F | 86.5°F |
| Tinian | 87.1°F | 87.3°F | 86.5°F |
| Guam | 86.5°F | 87.1°F | 86.9°F |
Please see following sea water temperature averages charts for the warmest Northern Mariana Islands resorts in January.
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.
