Water temperature in Portland
63.4
°F
July 5, 00:48
Trend:
increasingYesterday:
63.3°FTomorrow:
63.5°F
Sunrise:
Sunset:
Day Length:
16 h. 20 min.Portland in July
Minimum:
48.4°FAverage:
50.2°FMaximum:
51.4°FSea water temperature in Portland today
As of now, in Portland, the water temperature is 63.4°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it. Today's reading is 2.6°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to rise a bit.Recent sea temperature and forecast
Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 62.5°F on 2025, while the historical minimum was 58.8°F on 2016.
Daily water temperature in Portland
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jun 21 | 59.1°F | 61.1°F | 58.9°F |
| Jun 22 | 60.5°F | 61.1°F | 59.2°F |
| Jun 23 | 61.9°F | 61.0°F | 59.6°F |
| Jun 24 | 61.5°F | 61.5°F | 59.7°F |
| Jun 25 | 61.8°F | 61.1°F | 60.0°F |
| Jun 26 | 62.9°F | 60.8°F | 60.3°F |
| Jun 27 | 63.4°F | 61.1°F | 60.3°F |
| Jun 28 | 63.6°F | 62.2°F | 60.5°F |
| Jun 29 | 63.0°F | 62.2°F | 60.4°F |
| Jun 30 | 62.8°F | 62.9°F | 60.6°F |
| Jul 1 | 62.3°F | 62.9°F | 60.7°F |
| Jul 2 | 62.7°F | 62.4°F | 60.8°F |
| Jul 3 | 62.6°F | 62.9°F | 60.9°F |
| Jul 4 | 63.3°F | 62.5°F | 60.8°F |
| Jul 5 | 63.4°F | 62.5°F | 60.8°F |
| Jul 6 | 63.5°F | 62.6°F | 61.0°F |
| Jul 7 | 63.6°F | 62.9°F | 61.1°F |
| Jul 8 | 63.8°F | 63.2°F | 61.3°F |
| Jul 9 | 64.1°F | 63.0°F | 61.5°F |
| Jul 10 | 64.2°F | 63.7°F | 61.6°F |
| Jul 11 | 64.3°F | 64.0°F | 61.7°F |
| Jul 12 | 64.4°F | 64.2°F | 61.9°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.
Popular neighboring cities and resorts
| City | Water temperature* | Distance** |
|---|---|---|
| Bristol |
67.4°F
|
62mi |
| Barry |
65.6°F
|
68mi |
| Cardiff |
65.7°F
|
71mi |
| Cherbourg-Octeville |
62.4°F
|
74mi |
* current water temperature in this city
** straight line distance from Portland