Current sea water temperature:
+63.7°F
| Minimum sea water temperature in September: | 71.1°F |
| Maximum sea water temperature in September: | 55.6°F |
| Average sea water temperature in September: | 63.4°F |
| more information | |
14 days
forecast
forecast
| Porto |
monthly
weather
weather
| Porto |
Sea water temperature for the last 10 days:
| September 14 | 63.7°F | September 9 | 66.2°F |
| September 13 | 63.1°F | September 8 | 66.2°F |
| September 12 | 63.9°F | September 7 | 67.5°F |
| September 11 | 63.3°F | September 6 | 68.9°F |
| September 10 | 64.6°F | September 5 | 67.3°F |
Monthly sea water temperature, °F
When is the warmest sea in Porto?
Based on the data about daily sea water temperature for the last three years the warmest sea in Porto was noticed in September, August and July.
Monthly Sea Temperatures in Porto, °F
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.
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 66.5°F. The highest and lowest sea temperatures during the month were 69.3°F and 63.0°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 66.3°F. The highest and lowest sea temperatures during the month were 72.3°F and 61.5°F.
current
weather
weather
| Porto |
weather in
September
September
| Porto |
Best time for vacation in Porto
Porto on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Porto
Local time: 00:10
September 15, tuesday
0300
70°F
SW
1 mph
1 mph
0600
66°F
S
2 mph
2 mph
0900
70°F
SE
1 mph
1 mph
1200
81°F
E
6 mph
6 mph
1500
82°F
E
9 mph
9 mph
1800
79°F
SE
9 mph
9 mph
2100
70°F
E
2 mph
2 mph
September 16, wednesday
0000
68°F
S
4 mph
4 mph
