Average sea water temperature in September:
+63.4°F
| Minimum sea water temperature in September: | 71.1°F |
| Maximum sea water temperature in September: | 55.6°F |
Daily sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 61.6°F. The highest and lowest sea temperatures during the month were 65.7°F and 56.3°F.
Monthly sea water temperature in Porto, °F
Which Portugal resorts have warmest sea in September?
| Place name | September 2026 | September 2025 |
|---|---|---|
| Madeira | 77.4°F | 74.6°F |
| Funchal | 77.4°F | 74.6°F |
| Canico | 77.1°F | 74.3°F |
| Corvo Island | 76.2°F | 72.6°F |
| Sao Jorge | 76.0°F | 73.3°F |
| Santa Maria Island | 75.9°F | 73.7°F |
| Flores Island | 75.9°F | 72.8°F |
| Graciosa | 75.8°F | 72.7°F |
| Porto Santo Island | 75.7°F | 74.1°F |
| Pico Island | 75.6°F | 73.1°F |
| Faial Island | 75.6°F | 73.1°F |
| Terceira Island | 75.5°F | 72.6°F |
| Ponta Delgada | 75.3°F | 73.1°F |
| Sao Miguel | 75.3°F | 72.9°F |
| Tavira | 70.2°F | 66.5°F |
| Algarve | 69.6°F | 67.0°F |
| Faro | 69.6°F | 67.0°F |
| Quarteira | 68.7°F | 66.0°F |
| Lisbon | 68.5°F | 65.9°F |
| Albufeira | 68.1°F | 65.5°F |
Best time for vacation in Porto
Porto on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Porto
Local time: 00:27
September 15, tuesday
0300
68°F
S
1 mph
1 mph
0600
66°F
S
2 mph
2 mph
0900
68°F
SE
1 mph
1 mph
1200
79°F
E
6 mph
6 mph
1500
84°F
E
11 mph
11 mph
1800
79°F
SE
11 mph
11 mph
2100
70°F
E
2 mph
2 mph
September 16, wednesday
0000
66°F
SE
5 mph
5 mph
