The Costa Rica resorts with the warmest sea water temperature in September are Samara, Tamarindo and Playas del Coco.
Below you can see a list of all popular Costa Rica resorts and information about sea water temperature in September for the last two years.
| Resort Name | September 2023 | September 2022 | September 2021 |
|---|---|---|---|
| Samara | 90.3°F | 87.1°F | 87.0°F |
| Tamarindo | 90.3°F | 87.4°F | 87.0°F |
| Playas del Coco | 90.2°F | 87.6°F | 87.5°F |
| Playa Flamingo | 89.9°F | 87.5°F | 87.2°F |
| Limon | 89.8°F | 88.6°F | 88.3°F |
| Puerto Limon | 89.8°F | 88.6°F | 88.3°F |
| San Jose | 89.7°F | 87.6°F | 86.9°F |
| Santa Teresa | 89.7°F | 87.1°F | 86.5°F |
| Cartago | 89.7°F | 87.7°F | 87.0°F |
| Puerto Viejo de Talamanca | 89.7°F | 88.9°F | 88.1°F |
| Jaco | 89.7°F | 87.3°F | 86.8°F |
| Alajuela | 89.6°F | 87.2°F | 86.8°F |
| Quepos | 89.6°F | 87.6°F | 87.0°F |
| El Roble | 89.6°F | 87.3°F | 86.7°F |
| Heredia | 89.6°F | 87.2°F | 86.8°F |
| Cahuita | 89.6°F | 88.8°F | 88.1°F |
| Tortuguero | 89.5°F | 88.5°F | 88.2°F |
Please see following sea water temperature averages charts for the warmest Costa Rica resorts in September.
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 |  |
+82 |
| Cartago | |
+78 |
| El Roble |  |
+92 |
| Heredia | |
+82 |
| Jaco |  |
+88 |
| Limon | |
+90 |
| Playa Flamingo | |
+92 |
| Playas del Coco | |
+92 |
| Puerto Limon | |
+90 |
| Puerto Viejo de Talamanca | |
+92 |
| Quepos | |
+90 |
| Samara | |
+92 |
| San Jose | |
+82 |
| Santa Teresa | |
+88 |
| Tamarindo | |
+92 |
