The Portugal resorts with the warmest sea water temperature in December are Madeira, Funchal and Canico.
Below you can see a list of all popular Portugal resorts and information about sea water temperature in December for the last two years.
| Resort Name | December 2025 | December 2024 | December 2023 |
|---|---|---|---|
| Madeira | 71.7°F | 72.1°F | 73.4°F |
| Funchal | 71.7°F | 72.1°F | 73.4°F |
| Canico | 71.5°F | 71.9°F | 73.2°F |
| Porto Santo Island | 71.3°F | 71.4°F | 72.8°F |
| Santa Maria Island | 68.8°F | 68.8°F | 68.6°F |
| Faial Island | 66.5°F | 67.3°F | 66.2°F |
| Pico Island | 66.4°F | 67.2°F | 66.1°F |
| Sao Jorge | 66.3°F | 67.3°F | 66.0°F |
| Ponta Delgada | 66.1°F | 67.4°F | 67.5°F |
| Sao Miguel | 66.1°F | 67.2°F | 67.2°F |
| Flores Island | 65.9°F | 67.3°F | 65.7°F |
| Graciosa | 65.6°F | 67.3°F | 65.6°F |
| Terceira Island | 65.5°F | 66.8°F | 65.5°F |
| Corvo Island | 65.4°F | 66.7°F | 65.4°F |
| Faro | 63.6°F | 65.8°F | 64.7°F |
| Algarve | 63.6°F | 65.8°F | 64.7°F |
| Alvor | 63.1°F | 65.3°F | 63.5°F |
| Albufeira | 63.1°F | 65.0°F | 63.6°F |
| Portimao | 63.0°F | 65.0°F | 63.3°F |
| Quarteira | 63.0°F | 64.7°F | 63.6°F |
| Sagres | 63.0°F | 65.9°F | 64.6°F |
| Lagos | 63.0°F | 65.6°F | 63.8°F |
| Tavira | 62.9°F | 65.3°F | 64.5°F |
| Setubal | 61.8°F | 62.9°F | 62.8°F |
| Estoril | 61.8°F | 62.9°F | 62.9°F |
| Sintra | 61.7°F | 62.8°F | 62.6°F |
| Ericeira | 61.7°F | 62.9°F | 62.3°F |
| Cascais | 61.7°F | 62.9°F | 62.9°F |
| Peniche | 61.5°F | 62.1°F | 62.2°F |
| Lisbon | 60.8°F | 61.1°F | 60.9°F |
| Porto | 60.4°F | 60.3°F | 60.3°F |
Please see following sea water temperature averages charts for the warmest Portugal resorts in December.
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.
Portugal Resorts:
NAME
F°
| Albufeira |  |
+54 |
| Algarve |  |
+58 |
| Cascais | |
+54 |
| Faro | |
+58 |
| Funchal | |
+56 |
| Lagos | |
+56 |
| Lisbon | |
+52 |
| Madeira | |
+56 |
| Ponta Delgada | |
+58 |
| Portimao | |
+56 |
| Porto |  |
+52 |
| Porto Santo Island | |
+66 |
| Quarteira | |
+56 |
| Sao Miguel | |
+58 |
| Terceira Island | |
+56 |
