Swimming in Porto in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in Porto in september 2025.
In september, according to seasonal norms, the sea temperature in Porto is:
Minimum: 62°F
Average: 65°F
Maximum: 68°F
Other useful seasonal weather averages in september:
- Outside temperature: 63°F to 77°F
- Most common weather: "Clear/Sunny"
- The wind blows at 11.2mph
- It rains a total of 2.9in, over 3 day(s).
Should we swim in Porto in september?
Yes... and no. The water temperature in Porto in september is cool
Swimming in september on the beaches of Porto is possible but the sea water is cool. So even though the sea temperature sometimes climbs to 68°F, it can also be as low as 62°F! Note that the average is 65°F.
Note also that in september, the climate is perfect with an average outside temperature of 70°F, 2.9in of precipitation (over 3 days) and 78.3 % humidity.
Water and normal seasonal temperatures in Porto in september
| September | |||
| Average sea temperature | 65°F | ||
| Minimum sea temperature | 62°F | ||
| Maximum sea temperature | 68°F | ||
| Average outside temperature | 72°F | ||
| Maximum outside temperature | 77°F | ||
| Minimum outside temperature | 65°F | ||
| Wind speed | 9.9mph | ||
| Wind temperature | 65°F | ||
| Precipitation | 2.9in | ||
| Number of days of rain | 3 jour(s) (10%) | ||
| Humidity | 79% | ||
| Visibility in kilometers | 9.36km | ||
| Cloud cover | 22% | ||
| Our opinion | cool swimming |
Chart of the tides in september 2025
Tide times in september 2025 in Porto
Swim elsewhere in Portugal in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Lisbon in september | 68°F | 71°F | cool swimming | Albufeira in september | 71°F | 73°F | pleasant swimming | Aveiro in september | 65°F | 68°F | cool swimming | Faro (Algarve) in september | 72°F | 74°F | pleasant swimming | Lagos in september | 71°F | 72°F | pleasant swimming | Viana do Castelo in september | 65°F | 68°F | cool swimming | Cascais in september | 68°F | 71°F | cool swimming | Portimao in september | 70°F | 72°F | pleasant swimming | Praia de Mira in september | 67°F | 69°F | cool swimming | Sines in september | 69°F | 71°F | cool swimming | Caminha in september | 66°F | 68°F | cool swimming | Carvoeiro in september | 71°F | 73°F | pleasant swimming | Costa da Caparica in september | 68°F | 71°F | cool swimming | Foz do Arelho in september | 68°F | 70°F | cool swimming | Praia da Rocha in september | 71°F | 73°F | pleasant swimming | Ericeira in september | 68°F | 71°F | cool swimming | Estoril in september | 68°F | 71°F | cool swimming | Monte Gordo in september | 71°F | 74°F | pleasant swimming | Nazaré in september | 67°F | 70°F | cool swimming | Olhao in september | 71°F | 74°F | pleasant swimming |