The Costa Rica resorts with the warmest sea water temperature in April are Cartago, San Jose and Quepos.
Below you can see a list of all popular Costa Rica resorts and information about sea water temperature in April for the last two years.
| Resort Name | April 2026 | April 2025 | April 2024 |
|---|---|---|---|
| Cartago | 90.8°F | 90.9°F | 90.3°F |
| San Jose | 90.7°F | 90.9°F | 90.2°F |
| Quepos | 90.7°F | 90.8°F | 90.4°F |
| Heredia | 90.4°F | 90.8°F | 90.0°F |
| Jaco | 90.2°F | 90.7°F | 89.9°F |
| Alajuela | 89.9°F | 90.5°F | 89.7°F |
| Samara | 89.9°F | 89.9°F | 88.4°F |
| Santa Teresa | 89.7°F | 90.1°F | 88.7°F |
| El Roble | 89.2°F | 89.9°F | 88.9°F |
| Tamarindo | 88.8°F | 89.0°F | 87.7°F |
| Playa Flamingo | 87.8°F | 88.2°F | 86.7°F |
| Playas del Coco | 87.7°F | 88.3°F | 86.3°F |
| Cahuita | 87.3°F | 86.7°F | 88.2°F |
| Limon | 87.2°F | 86.7°F | 88.5°F |
| Puerto Limon | 87.2°F | 86.7°F | 88.5°F |
| Puerto Viejo de Talamanca | 87.2°F | 86.7°F | 88.2°F |
| Tortuguero | 87.2°F | 86.8°F | 88.4°F |
Please see following sea water temperature averages charts for the warmest Costa Rica resorts in April.
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 |  |
+64 |
| Cahuita |  |
+80 |
| El Roble | |
+82 |
| Heredia | |
+62 |
| Jaco | |
+84 |
| Limon | |
+80 |
| Playa Flamingo |  |
+84 |
| Playas del Coco | |
+84 |
| Puerto Limon | |
+80 |
| Puerto Viejo de Talamanca |  |
+76 |
| Quepos | |
+76 |
| Samara | |
+84 |
| San Jose | |
+62 |
| Tamarindo | |
+84 |
| Tortuguero | |
+78 |
