Current Sea Water Temperature:
+61.4°F
| Maximum Sea Water Temperature in May: | 67.0°F |
| Minimum Sea Water Temperature in May: | 56.0°F |
| Average water temperature in May: | 60.9°F |
| detailed information | |
Sea Water Temperature for the Last 10 Days:
| May 09 | 61.4°F | May 04 | 63.4°F |
| May 08 | 61.8°F | May 03 | 63.0°F |
| May 07 | 61.6°F | May 02 | 62.8°F |
| May 06 | 63.4°F | May 01 | 62.0°F |
| May 05 | 63.8°F | April 30 | 61.2°F |
When is the Warmest Sea for Porto?
According to our data for the last three years for Porto the highest average sea water temperature was in September, August and July.
Average Water Temperature by Month, °F
Sea Water Temperature in September
The average sea surface temperature in September 2025 for Porto was 62.9°F. The maximum and minimum values were 57.0°F and 67.4°F respectively.
Sea Water Temperature in August
The average sea surface temperature in August 2025 for Porto was 64.7°F. The maximum and minimum values were 60.0°F and 69.4°F respectively.
Sea Water Temperature in July
The average sea surface temperature in July 2025 for Porto was 63.5°F. The maximum and minimum values were 58.6°F and 68.0°F respectively.
Portugal Resorts:
NAME
F°
| Albufeira |  |
+58 |
| Algarve |  |
+60 |
| Cascais | |
+58 |
| Faro | |
+60 |
| Funchal | |
+54 |
| Lagos | |
+58 |
| Lisbon | |
+56 |
| Madeira | |
+54 |
| Peniche | |
+52 |
| Ponta Delgada | |
+58 |
| Portimao | |
+58 |
| Porto | |
+52 |
| Porto Santo Island | |
+62 |
| Sao Miguel | |
+58 |
| Setubal | |
+56 |
Countries:
NAME
POPULARITY
24 Hours Weather Forecast
Porto
Local time: 05:18
10 may, sunday
| 0600 |  |
52°F | N 11 mph |
| 0900 |  |
56°F | N 13 mph |
| 1200 | |
60°F | N 19 mph |
| 1500 | |
62°F | N 19 mph |
| 1800 | |
58°F | N 17 mph |
| 2100 | |
58°F | N 14 mph |
11 may, monday
| 0000 | |
58°F | N 16 mph |
| 0300 | |
56°F | N 13 mph |