What is the current water temperature in Plymouth?

Q: What is the current water temperature in Plymouth?

As of now, in Plymouth, the water temperature is 19.15°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

United States > Plymouth

Water temperature in Plymouth

Detailed information about the current water temperature in Plymouth. 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.

66.5

°F

August 28, 07:26

Trend:

decreasing

Yesterday:

66.7°F

Tomorrow:

66.1°F

Sunrise:

06:04

Sunset:

19:23

Day Length:

13 h. 19 min.

Plymouth in September

Minimum:

37.4°F

Average:

40.8°F

Maximum:

43.6°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 66.5°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 2.1°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 slightly 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 73.0°F on 2021, while the historical minimum was 65.4°F on 2023.

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 65.5°F, the minimum temperature may reach 64.4°F, and the maximum might stay at 66.1°F.

Daily water temperature in Plymouth

Date	Current Year actual* / forecast**	last year	10 years average
Aug 14	67.7°F	67.3°F	68.1°F
Aug 15	67.2°F	67.5°F	68.3°F
Aug 16	67.4°F	66.7°F	68.0°F
Aug 17	66.4°F	67.2°F	68.3°F
Aug 18	67.8°F	67.6°F	68.1°F
Aug 19	68.8°F	67.6°F	68.5°F
Aug 20	68.2°F	68.2°F	68.1°F
Aug 21	67.4°F	67.2°F	68.3°F
Aug 22	66.8°F	64.1°F	67.9°F
Aug 23	65.3°F	63.8°F	67.7°F
Aug 24	65.4°F	64.3°F	67.1°F
Aug 25	65.9°F	65.8°F	67.3°F
Aug 26	66.5°F	66.5°F	67.8°F
Aug 27	66.7°F	66.1°F	68.3°F
Aug 28	66.5°F	66.1°F	68.6°F
Aug 29	66.1°F	67.1°F	68.2°F
Aug 30	65.9°F	67.4°F	68.0°F
Aug 31	66.0°F	66.6°F	68.1°F
Sep 1	65.6°F	67.5°F	67.7°F
Sep 2	65.5°F	70.4°F	67.6°F
Sep 3	64.9°F	68.4°F	67.0°F
Sep 4	64.4°F	65.0°F	66.5°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 Plymouth by month

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

The warmest water in Plymouth was recorded on July 31, 2020, reaching a 76.3°F. While the coldest temperature occurred on February 22, 2025, dipping to 32.9°F. The average readings by season are 41.3°F in Winter, 44.9°F in Spring, 65.1°F in Summer, and 58.9°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
South Boston	66.1°F	32mi
Boston	68.0°F	34mi
Bristol	71.6°F	36mi
Providence	71.2°F	39mi

* current water temperature in this city

** straight line distance from Plymouth