The Puerto Rico resorts with the warmest sea water temperature in January are Aguadilla, San Juan and Arecibo.
Below you can see a list of all popular Puerto Rico resorts and information about sea water temperature in January for the last two years.
| Resort Name | January 2026 | January 2025 | January 2024 |
|---|---|---|---|
| Aguadilla | 85.0°F | 85.4°F | 85.2°F |
| San Juan | 85.0°F | 85.0°F | 84.6°F |
| Arecibo | 84.8°F | 84.9°F | 85.1°F |
| Isabella | 84.8°F | 85.1°F | 84.9°F |
| Mayaguez | 84.7°F | 85.3°F | 85.2°F |
| Ponce | 84.6°F | 85.4°F | 85.1°F |
Please see following sea water temperature averages charts for the warmest Puerto Rico 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.
