The Costa Rica resorts with the warmest sea water temperature at this moment are Quepos, Cartago and San Jose.
Below you can see a list of all popular Costa Rica resorts and information about current sea water temperature and averages for current and next months.
| Resort Name | Current Sea Water Temperature |
August 2025 | September 2025 |
|---|---|---|---|
| Quepos | 91.6°F | 88.1°F | 87.7°F |
| Cartago | 91.4°F | 88.2°F | 87.6°F |
| San Jose | 91.4°F | 88.2°F | 87.6°F |
| Heredia | 91.0°F | 88.2°F | 87.4°F |
| Alajuela | 90.8°F | 88.2°F | 87.5°F |
| Jaco | 90.8°F | 88.3°F | 87.5°F |
| El Roble | 90.8°F | 88.0°F | 87.5°F |
| Santa Teresa | 90.6°F | 88.1°F | 87.6°F |
| Samara | 90.4°F | 88.2°F | 87.4°F |
| Tamarindo | 89.2°F | 87.9°F | 87.6°F |
| Playa Flamingo | 88.8°F | 87.8°F | 87.5°F |
| Playas del Coco | 88.2°F | 87.8°F | 87.6°F |
| Limon | 87.0°F | 88.0°F | 88.5°F |
| Puerto Limon | 87.0°F | 88.0°F | 88.5°F |
| Puerto Viejo de Talamanca | 87.0°F | 87.9°F | 88.5°F |
| Tortuguero | 87.0°F | 87.6°F | 88.2°F |
| Cahuita | 87.0°F | 87.9°F | 88.5°F |
Please see following sea water temperature averages charts for the warmest Costa Rica resorts for more details.
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.
Costa Rica Resorts:
NAME
F°
| Alajuela |  |
+62 |
| Cahuita |  |
+80 |
| El Roble |  |
+80 |
| Heredia | |
+58 |
| Jaco | |
+82 |
| Limon |  |
+80 |
| Playa Flamingo | |
+80 |
| Playas del Coco | |
+80 |
| Puerto Limon | |
+80 |
| Puerto Viejo de Talamanca | |
+78 |
| Samara | |
+80 |
| San Jose | |
+58 |
| Santa Teresa | |
+82 |
| Tamarindo | |
+80 |
| Tortuguero | |
+78 |
