What is the current water temperature in Boston?

Q: What is the current water temperature in Boston?

As of now, in Boston, the water temperature is 9.68°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.

United States > Boston

Water temperature in Boston

Detailed information about the current water temperature in Boston. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

49.4

°F

November 21, 02:46

Trend:

stable

Yesterday:

49.4°F

Tomorrow:

49.2°F

Sunrise:

06:43

Sunset:

16:17

Day Length:

9 h. 34 min.

Boston in November

Minimum:

38.9°F

Average:

41.1°F

Maximum:

44.7°F

Sea water temperature in Boston today

As of now, in Boston, the water temperature is 49.4°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 about the same as 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 also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 51.5°F on 2016, while the historical minimum was 46.4°F on 2019.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 48.6°F, the minimum temperature may reach 48.0°F, and the maximum might stay at 49.2°F.

Daily water temperature in Boston

Date	Current Year actual* / forecast**	last year	10 years average
Nov 7	55.9°F	51.6°F	53.2°F
Nov 8	54.8°F	52.3°F	53.3°F
Nov 9	54.0°F	52.0°F	52.5°F
Nov 10	53.5°F	51.8°F	52.0°F
Nov 11	53.3°F	49.3°F	51.8°F
Nov 12	53.3°F	50.9°F	51.8°F
Nov 13	53.3°F	49.8°F	51.8°F
Nov 14	53.0°F	50.1°F	51.5°F
Nov 15	50.1°F	49.9°F	51.0°F
Nov 16	49.8°F	50.2°F	50.5°F
Nov 17	49.0°F	48.3°F	49.8°F
Nov 18	49.0°F	48.8°F	49.7°F
Nov 19	49.7°F	49.1°F	49.6°F
Nov 20	49.4°F	49.6°F	49.4°F
Nov 21	49.4°F	47.4°F	49.3°F
Nov 22	49.2°F	47.4°F	49.1°F
Nov 23	49.0°F	46.4°F	48.9°F
Nov 24	48.8°F	47.7°F	48.7°F
Nov 25	48.4°F	47.7°F	48.3°F
Nov 26	48.2°F	47.6°F	48.1°F
Nov 27	48.3°F	47.8°F	48.1°F
Nov 28	48.0°F	45.1°F	47.9°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.

Sea water temperature in Boston by month

In an average year, Boston offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Boston was recorded on July 29, 2020, reaching a 75.0°F. While the coldest temperature occurred on February 22, 2021, dipping to 33.7°F. The average readings by season are 41.3°F in Winter, 44.9°F in Spring, 64.8°F in Summer, and 58.0°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
South Boston	49.4°F	2mi
Salem	50.0°F	14mi
Plymouth	50.8°F	34mi
Providence	51.2°F	41mi
Bristol	51.5°F	48mi

* current water temperature in this city

** straight line distance from Boston