In October warmest sea in Puerto Rico is usually observed in the following locations: Aguadilla, Mayaguez, Ponce.
Table below shows the average sea water temperature for marine resorts of Puerto Rico in October for the last three years.
| Place name | October 2025 | October 2024 | October 2023 |
|---|---|---|---|
| Aguadilla | 85.8°F | 87.0°F | 86.6°F |
| Mayaguez | 85.8°F | 87.0°F | 86.8°F |
| Ponce | 85.7°F | 87.1°F | 87.2°F |
| San Juan | 85.5°F | 87.0°F | 86.1°F |
| Isabella | 85.5°F | 86.7°F | 86.2°F |
| Arecibo | 85.4°F | 86.6°F | 86.5°F |
Charts below show average sea water temperature for Puerto Rico resorts with the warmest sea in October.
You can also check other months of the year to see sea temperature of Puerto Rico resorts at that time.
Places in Puerto Rico:
Name
°F
