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 17.75°F. Swimming in water of this temperature is generally concidered to be cool, and most people won't really enjoy it.

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.

64.0

°F

June 21, 11:33

Trend:

increasing

Yesterday:

62.6°F

Tomorrow:

64.4°F

Sunrise:

05:07

Sunset:

20:24

Day Length:

15 h. 17 min.

South Boston in June

Minimum:

38.9°F

Average:

41.8°F

Maximum:

44.2°F

Sea water temperature in South Boston today

As of now, in South Boston, the water temperature is 64.0°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 2.2°F higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming 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 66.2°F on 2020, while the historical minimum was 58.8°F on 2015.

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 suggests a gradual increase. The average temperature is expected to rise up to 64.8°F, with minimum temperature starting at 64.1°F, while the maximum might reach 66.1°F.

Daily water temperature in South Boston

Date	Current Year actual* / forecast**	last year	10 years average
Jun 7	58.5°F	61.4°F	57.9°F
Jun 8	60.7°F	61.1°F	58.4°F
Jun 9	59.3°F	62.4°F	58.5°F
Jun 10	58.8°F	61.5°F	58.3°F
Jun 11	58.5°F	63.1°F	59.0°F
Jun 12	58.4°F	62.0°F	59.1°F
Jun 13	60.4°F	63.3°F	59.7°F
Jun 14	60.4°F	62.5°F	59.5°F
Jun 15	59.4°F	62.8°F	59.7°F
Jun 16	59.3°F	62.7°F	60.2°F
Jun 17	60.7°F	61.8°F	60.6°F
Jun 18	59.2°F	63.1°F	60.8°F
Jun 19	60.9°F	63.5°F	61.1°F
Jun 20	62.6°F	64.2°F	61.8°F
Jun 21	64.0°F	65.3°F	61.7°F
Jun 22	64.4°F	65.8°F	62.2°F
Jun 23	64.3°F	65.1°F	62.1°F
Jun 24	64.1°F	64.2°F	61.9°F
Jun 25	64.5°F	63.3°F	62.3°F
Jun 26	65.1°F	64.4°F	62.9°F
Jun 27	66.1°F	64.2°F	63.9°F
Jun 28	65.4°F	62.7°F	63.2°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 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 58.1°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Boston	62.6°F	2mi
Salem	63.5°F	15mi
Plymouth	62.5°F	32mi
Providence	69.3°F	40mi
Bristol	67.8°F	47mi

* current water temperature in this city

** straight line distance from South Boston