What is the current water temperature in South Boston?

Q: What is the current water temperature in South Boston?

As of now, in South Boston, the water temperature is 11.03°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 > South Boston

Water temperature in South Boston

Detailed information about the current water temperature in South 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.

51.9

°F

November 5, 01:42

Trend:

decreasing

Yesterday:

52.2°F

Tomorrow:

51.7°F

Sunrise:

06:22

Sunset:

16:33

Day Length:

10 h. 11 min.

South Boston in November

Minimum:

38.4°F

Average:

41.0°F

Maximum:

44.7°F

Sea water temperature in South Boston today

As of now, in South Boston, the water temperature is 51.9°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 1.5°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 also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 55.7°F on 2022, while the historical minimum was 49.7°F on 2020.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly lower than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 51.0°F, the minimum temperature may reach 50.2°F, and the maximum might stay at 51.9°F.

Daily water temperature in South Boston

Date	Current Year actual* / forecast**	last year	10 years average
Oct 22	56.3°F	57.4°F	57.2°F
Oct 23	55.7°F	58.1°F	57.0°F
Oct 24	55.1°F	57.1°F	56.8°F
Oct 25	54.4°F	56.2°F	56.2°F
Oct 26	54.5°F	56.1°F	56.1°F
Oct 27	55.0°F	54.4°F	55.7°F
Oct 28	54.6°F	55.0°F	56.0°F
Oct 29	54.1°F	54.9°F	55.6°F
Oct 30	53.5°F	54.5°F	55.0°F
Oct 31	52.9°F	54.2°F	54.4°F
Nov 1	53.0°F	54.0°F	54.4°F
Nov 2	53.0°F	54.1°F	54.4°F
Nov 3	52.8°F	53.3°F	54.2°F
Nov 4	52.2°F	53.0°F	53.7°F
Nov 5	51.9°F	52.5°F	53.3°F
Nov 6	51.7°F	52.1°F	53.1°F
Nov 7	51.7°F	51.8°F	53.2°F
Nov 8	51.9°F	51.6°F	53.4°F
Nov 9	51.0°F	50.8°F	52.4°F
Nov 10	50.5°F	50.7°F	52.0°F
Nov 11	50.3°F	50.4°F	51.8°F
Nov 12	50.2°F	49.8°F	51.6°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 South Boston by month

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

The warmest water in South Boston was recorded on July 29, 2020, reaching a 75.0°F. While the coldest temperature occurred on February 1, 2026, dipping to 32.0°F. The average readings by season are 40.7°F in Winter, 45.4°F in Spring, 65.2°F in Summer, and 58.0°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Boston	51.9°F	2mi
Salem	52.4°F	15mi
Plymouth	53.0°F	32mi
Providence	54.8°F	40mi
Bristol	54.6°F	47mi

* current water temperature in this city

** straight line distance from South Boston