Water temperature in Porto
79.6
°F
September 21, 19:44
Trend:
stableYesterday:
79.4°FTomorrow:
79.3°F
Sunrise:
Sunset:
Day Length:
12 h. 14 min.Porto in September
Minimum:
59.7°FAverage:
60.7°FMaximum:
62.1°FSea water temperature in Porto today
As of now, in Porto, the water temperature is 79.6°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 3.1°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to fall a bit.Recent sea temperature and forecast
Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 78.2°F on 2025, while the historical minimum was 74.0°F on 2017.
Daily water temperature in Porto
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Sep 7 | 83.9°F | 80.0°F | 79.2°F |
| Sep 8 | 83.8°F | 79.2°F | 79.1°F |
| Sep 9 | 84.0°F | 79.6°F | 79.0°F |
| Sep 10 | 84.0°F | 79.3°F | 78.9°F |
| Sep 11 | 83.6°F | 78.8°F | 78.7°F |
| Sep 12 | 83.2°F | 79.1°F | 78.6°F |
| Sep 13 | 82.9°F | 78.8°F | 78.4°F |
| Sep 14 | 82.3°F | 79.2°F | 78.2°F |
| Sep 15 | 81.7°F | 78.9°F | 78.0°F |
| Sep 16 | 80.7°F | 79.0°F | 77.7°F |
| Sep 17 | 80.4°F | 79.3°F | 77.6°F |
| Sep 18 | 80.2°F | 78.9°F | 77.5°F |
| Sep 19 | 79.9°F | 78.1°F | 77.1°F |
| Sep 20 | 79.4°F | 78.3°F | 77.1°F |
| Sep 21 | 79.6°F | 78.2°F | 76.6°F |
| Sep 22 | 79.3°F | 78.0°F | 76.3°F |
| Sep 23 | 79.3°F | 78.2°F | 76.2°F |
| Sep 24 | 79.2°F | 77.8°F | 76.1°F |
| Sep 25 | 79.0°F | 77.7°F | 76.0°F |
| Sep 26 | 78.7°F | 77.2°F | 75.6°F |
| Sep 27 | 78.3°F | 77.1°F | 75.2°F |
| Sep 28 | 78.0°F | 76.5°F | 74.9°F |
* actual - actual temperature values
** forecast - projected values for the next week
Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.
Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.