The Costa Rica resorts with the warmest sea water temperature in January are Quepos, Heredia and Cartago.
Below you can see a list of all popular Costa Rica resorts and information about sea water temperature in January for the last two years.
| Resort Name | January 2026 | January 2025 | January 2024 |
|---|---|---|---|
| Quepos | 88.1°F | 87.8°F | 90.3°F |
| Heredia | 87.9°F | 87.6°F | 90.0°F |
| Cartago | 87.9°F | 87.8°F | 90.3°F |
| Jaco | 87.9°F | 87.5°F | 89.9°F |
| San Jose | 87.9°F | 87.7°F | 90.2°F |
| Alajuela | 87.7°F | 87.2°F | 89.6°F |
| Santa Teresa | 87.4°F | 86.9°F | 89.3°F |
| Samara | 87.2°F | 86.8°F | 89.1°F |
| El Roble | 87.1°F | 86.3°F | 88.8°F |
| Tamarindo | 86.4°F | 85.5°F | 88.3°F |
| Playas del Coco | 85.4°F | 84.5°F | 86.8°F |
| Playa Flamingo | 85.2°F | 84.4°F | 86.8°F |
| Limon | 85.2°F | 85.0°F | 86.4°F |
| Puerto Limon | 85.2°F | 85.0°F | 86.4°F |
| Puerto Viejo de Talamanca | 85.1°F | 85.1°F | 86.4°F |
| Cahuita | 85.0°F | 85.0°F | 86.5°F |
| Tortuguero | 84.9°F | 84.8°F | 86.1°F |
Please see following sea water temperature averages charts for the warmest Costa Rica resorts in January.
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 |  |
+56 |
| Cahuita |  |
+74 |
| Cartago |  |
+50 |
| Jaco | |
+76 |
| Limon | |
+74 |
| Playa Flamingo | |
+76 |
| Playas del Coco | |
+76 |
| Puerto Limon | |
+74 |
| Puerto Viejo de Talamanca | |
+66 |
| Quepos | |
+66 |
| Samara | |
+78 |
| San Jose | |
+52 |
| Santa Teresa | |
+76 |
| Tamarindo | |
+76 |
| Tortuguero | |
+70 |
