The Portugal resorts with the warmest sea water temperature in September are Madeira, Funchal and Canico.
Below you can see a list of all popular Portugal resorts and information about sea water temperature in September for the last two years.
| Resort Name | September 2026 | September 2025 | September 2024 |
|---|---|---|---|
| Madeira | 79.8°F | 77.4°F | 77.5°F |
| Funchal | 79.8°F | 77.4°F | 77.5°F |
| Canico | 79.4°F | 77.0°F | 77.3°F |
| Corvo Island | 78.7°F | 75.1°F | 78.0°F |
| Sao Jorge | 78.5°F | 75.9°F | 78.1°F |
| Pico Island | 78.5°F | 75.7°F | 77.9°F |
| Faial Island | 78.5°F | 75.6°F | 78.0°F |
| Flores Island | 78.4°F | 75.4°F | 78.2°F |
| Porto Santo Island | 78.4°F | 76.8°F | 76.8°F |
| Santa Maria Island | 78.3°F | 76.4°F | 78.5°F |
| Graciosa | 78.2°F | 75.2°F | 77.8°F |
| Ponta Delgada | 78.2°F | 75.7°F | 78.7°F |
| Terceira Island | 78.0°F | 75.2°F | 77.4°F |
| Sao Miguel | 77.7°F | 75.5°F | 78.3°F |
| Tavira | 74.7°F | 68.4°F | 71.2°F |
| Faro | 74.0°F | 68.9°F | 70.3°F |
| Algarve | 74.0°F | 68.9°F | 70.3°F |
| Quarteira | 73.0°F | 67.8°F | 68.8°F |
| Albufeira | 72.6°F | 67.3°F | 68.5°F |
| Portimao | 72.3°F | 66.8°F | 68.7°F |
| Alvor | 72.1°F | 66.3°F | 68.3°F |
| Lagos | 71.2°F | 65.5°F | 67.3°F |
| Lisbon | 70.3°F | 67.7°F | 66.8°F |
| Sagres | 69.2°F | 63.6°F | 65.1°F |
| Setubal | 69.1°F | 66.3°F | 66.0°F |
| Cascais | 66.3°F | 64.0°F | 62.7°F |
| Estoril | 65.8°F | 63.9°F | 62.5°F |
| Sintra | 65.6°F | 64.0°F | 62.6°F |
| Peniche | 65.1°F | 64.2°F | 62.3°F |
| Porto | 64.8°F | 62.9°F | 60.1°F |
| Ericeira | 64.2°F | 63.2°F | 61.7°F |
Please see following sea water temperature averages charts for the warmest Portugal 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.
