Current sea water temperature:
+55.2°F
| Minimum sea water temperature in March: | 59.4°F |
| Maximum sea water temperature in March: | 53.4°F |
| Average sea water temperature in March: | 56.1°F |
| more information | |
14 days
forecast
forecast
| Porto |
monthly
weather
weather
| Porto |
Sea water temperature for the last 10 days:
| March 17 | 55.2°F | March 12 | 55.0°F |
| March 16 | 55.4°F | March 11 | 54.5°F |
| March 15 | 55.8°F | March 10 | 54.9°F |
| March 14 | 55.8°F | March 9 | 54.9°F |
| March 13 | 55.4°F | March 8 | 54.7°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:
2025
2024
2023
The average sea water temperature in August of 2025 was 63.3°F. The highest and lowest sea temperatures during the month were 67.5°F and 59.0°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 62.2°F. The highest and lowest sea temperatures during the month were 66.2°F and 57.7°F.
current
weather
weather
| Porto |
weather in
March
March
| Porto |
Best time for vacation in Porto
Porto on a weather map
Places in Portugal:
Name
°F
24 Hours Forecast
Porto
Local time: 08:22
March 17, tuesday
0900
57°F
W
6 mph
6 mph
1200
66°F
N
5 mph
5 mph
1500
66°F
NE
8 mph
8 mph
1800
59°F
NE
4 mph
4 mph
2100
57°F
N
9 mph
9 mph
March 18, wednesday
0000
57°F
NW
8 mph
8 mph
0300
55°F
NW
7 mph
7 mph
0600
55°F
NW
11 mph
11 mph
