Water temperature in Boston
60.1
°F
September 30, 06:02
Trend:
decreasingYesterday:
60.7°FTomorrow:
59.7°F
Sunrise:
Sunset:
Day Length:
11 h. 48 min.Boston in October
Minimum:
39.2°FAverage:
41.1°FMaximum:
44.2°FSea water temperature in Boston today
As of now, in Boston, the water temperature is 60.1°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 2.7°F lower 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 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 minimum temperature for this date. The maximum temperature recorded for this date was 65.4°F on 2025, while the historical minimum was 60.7°F on 2016.
Daily water temperature in Boston
| Date |
Current Year
actual* / forecast** |
last year | 10 years average |
|---|---|---|---|
| Sep 16 | 63.6°F | 62.4°F | 64.9°F |
| Sep 17 | 63.8°F | 61.4°F | 64.5°F |
| Sep 18 | 64.5°F | 63.3°F | 64.5°F |
| Sep 19 | 66.3°F | 64.0°F | 64.6°F |
| Sep 20 | 63.5°F | 65.0°F | 64.1°F |
| Sep 21 | 63.0°F | 63.9°F | 63.6°F |
| Sep 22 | 63.8°F | 63.7°F | 63.7°F |
| Sep 23 | 63.9°F | 62.7°F | 63.6°F |
| Sep 24 | 63.0°F | 63.7°F | 63.3°F |
| Sep 25 | 62.0°F | 63.3°F | 63.1°F |
| Sep 26 | 61.4°F | 63.6°F | 62.6°F |
| Sep 27 | 62.2°F | 64.9°F | 62.9°F |
| Sep 28 | 61.2°F | 65.0°F | 62.9°F |
| Sep 29 | 60.7°F | 66.8°F | 63.1°F |
| Sep 30 | 60.1°F | 65.4°F | 62.8°F |
| Oct 1 | 59.7°F | 64.6°F | 62.5°F |
| Oct 2 | 59.3°F | 63.9°F | 62.0°F |
| Oct 3 | 59.2°F | 63.6°F | 61.9°F |
| Oct 4 | 58.7°F | 62.0°F | 61.4°F |
| Oct 5 | 58.3°F | 61.2°F | 61.1°F |
| Oct 6 | 57.9°F | 62.4°F | 60.6°F |
| Oct 7 | 58.1°F | 63.6°F | 60.8°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** |
|---|---|---|
| South Boston |
60.1°F
|
2mi |
| Salem |
59.4°F
|
14mi |
| Plymouth |
60.0°F
|
34mi |
| Providence |
63.1°F
|
41mi |
| Bristol |
63.2°F
|
48mi |
* current water temperature in this city
** straight line distance from Boston