The Costa Rica resorts with the warmest sea water temperature in October are Limon, Puerto Limon and Puerto Viejo de Talamanca.
Below you can see a list of all popular Costa Rica resorts and information about sea water temperature in October for the last two years.
| Resort Name | October 2025 | October 2024 | October 2023 |
|---|---|---|---|
| Limon | 88.9°F | 89.5°F | 90.3°F |
| Puerto Limon | 88.9°F | 89.5°F | 90.3°F |
| Puerto Viejo de Talamanca | 88.8°F | 89.3°F | 90.2°F |
| Tortuguero | 88.8°F | 88.8°F | 89.7°F |
| Cahuita | 88.8°F | 89.3°F | 90.2°F |
| Playas del Coco | 87.2°F | 87.5°F | 89.7°F |
| Playa Flamingo | 86.8°F | 87.3°F | 89.4°F |
| Tamarindo | 86.7°F | 87.3°F | 89.6°F |
| Heredia | 86.5°F | 87.4°F | 89.0°F |
| Santa Teresa | 86.5°F | 87.4°F | 89.4°F |
| Samara | 86.5°F | 87.2°F | 89.2°F |
| Jaco | 86.5°F | 87.4°F | 88.9°F |
| Alajuela | 86.5°F | 87.3°F | 88.8°F |
| San Jose | 86.4°F | 87.5°F | 89.2°F |
| Quepos | 86.3°F | 87.4°F | 89.0°F |
| El Roble | 86.3°F | 87.4°F | 88.8°F |
| Cartago | 86.3°F | 87.4°F | 89.2°F |
Please see following sea water temperature averages charts for the warmest Costa Rica resorts in October.
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.
Sea Water
Temperature
Temperature
| Limon |
Sea Water
Temperature
Temperature
| Puerto Limon |
Sea Water
Temperature
Temperature
| Puerto Viejo de Talamanca |
Costa Rica Resorts:
NAME
F°
| Alajuela |  |
+58 |
| Cahuita |  |
+76 |
| Heredia | |
+58 |
| Jaco | |
+80 |
| Limon | |
+76 |
| Playa Flamingo |  |
+78 |
| Playas del Coco | |
+78 |
| Puerto Limon | |
+76 |
| Puerto Viejo de Talamanca | |
+74 |
| Quepos | |
+74 |
| Samara | |
+78 |
| San Jose | |
+54 |
| Santa Teresa | |
+82 |
| Tamarindo | |
+78 |
| Tortuguero | |
+76 |
