Current Sea Water Temperature:
+71.0°F
| Maximum Sea Water Temperature in May: | 72.0°F |
| Minimum Sea Water Temperature in May: | 59.2°F |
| Average water temperature in May: | 64.2°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 30 | 71.0°F | May 25 | 65.6°F |
| May 29 | 69.2°F | May 24 | 64.8°F |
| May 28 | 68.0°F | May 23 | 62.8°F |
| May 27 | 66.4°F | May 22 | 62.8°F |
| May 26 | 66.8°F | May 21 | 62.4°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 |  |
+82 |
| Algarve | |
+76 |
| Cascais | |
+70 |
| Faro | |
+76 |
| Funchal |  |
+70 |
| Lagos | |
+80 |
| Lisbon | |
+80 |
| Madeira | |
+70 |
| Ponta Delgada |  |
+68 |
| Portimao | |
+86 |
| Porto | |
+70 |
| Porto Santo Island | |
+68 |
| Quarteira | |
+80 |
| Sao Miguel | |
+68 |
| Setubal | |
+86 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Portimao
Local time: 13:42
30 may, saturday
| 1500 |  |
86°F | E 8 mph |
| 1800 | |
82°F | SE 14 mph |
| 2100 |  |
68°F | SE 12 mph |
31 may, sunday
| 0000 | |
66°F | S 9 mph |
| 0300 | |
62°F | S 9 mph |
| 0600 |  |
62°F | S 9 mph |
| 0900 | |
72°F | S 9 mph |
| 1200 | |
82°F | SE 6 mph |