Water temperature in Plymouth
65.6
°F
July 21, 18:48
Trend:
stableYesterday:
65.9°FTomorrow:
66.0°F
Sunrise:
Sunset:
Day Length:
15 h. 47 min.Plymouth in July
Minimum:
50.3°FAverage:
51.2°FMaximum:
52.1°FSea water temperature in Plymouth today
As of now, in Plymouth, the water temperature is 65.6°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 3.7°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
The water temperature today is above average for the last two weeks, showing a small increase in temperature. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 63.2°F on 2025, while the historical minimum was 59.5°F on 2020.
Daily water temperature in Plymouth
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Jul 7 | 63.1°F | 61.3°F | 60.1°F |
| Jul 8 | 63.4°F | 60.1°F | 60.2°F |
| Jul 9 | 63.4°F | 59.7°F | 60.4°F |
| Jul 10 | 64.6°F | 60.5°F | 60.8°F |
| Jul 11 | 65.6°F | 61.4°F | 61.1°F |
| Jul 12 | 66.5°F | 62.4°F | 61.3°F |
| Jul 13 | 66.6°F | 63.3°F | 61.5°F |
| Jul 14 | 65.5°F | 63.8°F | 61.5°F |
| Jul 15 | 66.3°F | 63.6°F | 61.7°F |
| Jul 16 | 66.1°F | 63.5°F | 61.7°F |
| Jul 17 | 66.4°F | 63.6°F | 62.1°F |
| Jul 18 | 66.3°F | 63.4°F | 62.3°F |
| Jul 19 | 66.4°F | 63.5°F | 62.7°F |
| Jul 20 | 65.9°F | 63.1°F | 62.5°F |
| Jul 21 | 65.6°F | 63.2°F | 61.9°F |
| Jul 22 | 66.0°F | 62.9°F | 62.3°F |
| Jul 23 | 66.1°F | 62.8°F | 62.4°F |
| Jul 24 | 66.0°F | 61.9°F | 62.3°F |
| Jul 25 | 66.1°F | 62.2°F | 62.4°F |
| Jul 26 | 65.9°F | 63.4°F | 62.2°F |
| Jul 27 | 66.0°F | 62.6°F | 62.3°F |
| Jul 28 | 65.6°F | 62.2°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.