The Costa Rica resorts with the warmest sea water temperature in March are Quepos, Cartago and San Jose.
Below you can see a list of all popular Costa Rica resorts and information about sea water temperature in March for the last two years.
| Resort Name | March 2026 | March 2025 | March 2024 |
|---|---|---|---|
| Quepos | 90.6°F | 90.4°F | 91.1°F |
| Cartago | 90.4°F | 90.3°F | 91.1°F |
| San Jose | 90.3°F | 90.3°F | 91.1°F |
| Heredia | 90.3°F | 90.0°F | 90.6°F |
| Jaco | 90.0°F | 89.7°F | 90.4°F |
| Alajuela | 89.6°F | 89.5°F | 90.1°F |
| Santa Teresa | 88.6°F | 88.8°F | 88.9°F |
| El Roble | 88.4°F | 88.5°F | 89.0°F |
| Samara | 87.9°F | 88.6°F | 88.4°F |
| Tamarindo | 86.8°F | 87.5°F | 87.2°F |
| Limon | 85.8°F | 87.2°F | 86.7°F |
| Puerto Limon | 85.8°F | 87.2°F | 86.7°F |
| Cahuita | 85.7°F | 87.2°F | 86.6°F |
| Puerto Viejo de Talamanca | 85.7°F | 87.2°F | 86.7°F |
| Tortuguero | 85.6°F | 87.2°F | 86.7°F |
| Playas del Coco | 85.0°F | 86.1°F | 86.7°F |
| Playa Flamingo | 84.9°F | 85.8°F | 86.3°F |
Please see following sea water temperature averages charts for the warmest Costa Rica resorts in March.
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 |  |
+84 |
| Cahuita |  |
+86 |
| El Roble |  |
+92 |
| Jaco | |
+88 |
| Limon | |
+84 |
| Playa Flamingo | |
+88 |
| Playas del Coco | |
+88 |
| Puerto Limon | |
+86 |
| Puerto Viejo de Talamanca | |
+84 |
| Quepos | |
+88 |
| Samara | |
+88 |
| San Jose | |
+80 |
| Santa Teresa | |
+88 |
| Tamarindo | |
+88 |
| Tortuguero | |
+84 |
