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 10.88°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.

51.6

°F

November 8, 06:33

Trend:

decreasing

Yesterday:

51.8°F

Tomorrow:

50.7°F

Sunrise:

06:26

Sunset:

16:29

Day Length:

10 h. 3 min.

Boston in November

Minimum:

38.4°F

Average:

41.0°F

Maximum:

44.7°F

Sea water temperature in Boston today

As of now, in Boston, the water temperature is 51.6°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 2.0°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 58.4°F on 2022, while the historical minimum was 52.1°F on 2018.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 49.9°F, the minimum temperature may reach 49.1°F, and the maximum might stay at 50.7°F.

Daily water temperature in Boston

Date	Current Year actual* / forecast**	last year	10 years average
Oct 25	56.2°F	57.4°F	56.2°F
Oct 26	56.1°F	56.6°F	56.0°F
Oct 27	54.4°F	56.4°F	55.5°F
Oct 28	55.0°F	56.0°F	55.7°F
Oct 29	54.9°F	55.0°F	55.3°F
Oct 30	54.5°F	54.3°F	54.9°F
Oct 31	54.2°F	54.0°F	54.3°F
Nov 1	54.0°F	54.5°F	54.3°F
Nov 2	54.1°F	56.9°F	54.3°F
Nov 3	53.3°F	54.5°F	54.1°F
Nov 4	53.0°F	53.2°F	53.7°F
Nov 5	52.5°F	52.9°F	53.3°F
Nov 6	52.1°F	54.3°F	53.1°F
Nov 7	51.8°F	55.9°F	53.2°F
Nov 8	51.6°F	54.8°F	53.6°F
Nov 9	50.7°F	53.9°F	52.7°F
Nov 10	50.2°F	53.4°F	52.2°F
Nov 11	50.0°F	53.2°F	52.0°F
Nov 12	49.9°F	53.1°F	51.9°F
Nov 13	49.9°F	53.1°F	51.9°F
Nov 14	49.6°F	52.8°F	51.6°F
Nov 15	49.1°F	50.1°F	51.1°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 11, 2025, dipping to 32.5°F. The average readings by season are 41.1°F in Winter, 45.1°F in Spring, 65.0°F in Summer, and 58.0°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
South Boston	51.6°F	2mi
Salem	52.0°F	14mi
Plymouth	52.3°F	34mi
Providence	52.7°F	41mi
Bristol	52.2°F	48mi

* current water temperature in this city

** straight line distance from Boston