Current Sea Water Temperature:
+62.2°F
| Maximum Sea Water Temperature in December: | 68.0°F |
| Minimum Sea Water Temperature in December: | 58.0°F |
| Average water temperature in December: | 63.5°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| December 18 | 62.2°F | December 13 | 63.0°F |
| December 17 | 62.4°F | December 12 | 62.8°F |
| December 16 | 62.2°F | December 11 | 62.8°F |
| December 15 | 62.6°F | December 10 | 62.6°F |
| December 14 | 62.8°F | December 09 | 62.8°F |
When is the Warmest Sea for Portimao?
According to our data for the last three years for Portimao the highest average sea water temperature was in September, August and October.
Average Water Temperature by Month, °F
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Portimao was 66.8°F. The maximum and minimum values were 63.2°F and 69.6°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Portimao was 74.0°F. The maximum and minimum values were 68.6°F and 78.2°F respectively.
Sea Water Temperature in October
The average sea surface temperature in October 2025 for Portimao was 69.6°F. The maximum and minimum values were 66.6°F and 71.8°F respectively.
Portugal Resorts:
NAME
F°
| Albufeira |  |
+54 |
| Algarve |  |
+56 |
| Cascais | |
+58 |
| Faro | |
+56 |
| Funchal | |
+54 |
| Lagos | |
+56 |
| Lisbon | |
+52 |
| Madeira | |
+54 |
| Ponta Delgada |  |
+60 |
| Portimao | |
+52 |
| Porto | |
+50 |
| Porto Santo Island | |
+66 |
| Quarteira | |
+54 |
| Sao Miguel | |
+60 |
| Terceira Island | |
+54 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Portimao
Local time: 09:20
18 dec, thursday
| 1200 |  |
60°F | NW 7 mph |
| 1500 | |
62°F | N 8 mph |
| 1800 |  |
58°F | N 7 mph |
| 2100 | |
58°F | N 9 mph |
19 dec, friday
| 0000 |  |
58°F | N 8 mph |
| 0300 | |
58°F | N 7 mph |
| 0600 |  |
58°F | NE 9 mph |
| 0900 | |
58°F | SE 3 mph |