All data are in degrees Fahrenheit

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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.
Sea temperature in Plymouth now

55.3

°F

October 25, 04:16

Trend:

decreasing

Yesterday:

55.6°F

Tomorrow:

55.0°F

Sunrise:

07:06

Sunset:

17:46

Day Length:

10 h. 40 min.

Plymouth in November

Minimum:

36.8°F

Average:

40.3°F

Maximum:

44.7°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 55.3°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 2.1°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 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 59.9°F on 2021, while the historical minimum was 55.1°F on 2022.

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 minimum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 54.3°F, the minimum temperature may reach 53.5°F, and the maximum might stay at 55.0°F.

Daily water temperature in Plymouth

Date Current Year

actual* / forecast**

last year 10 years average
Oct 11 59.2°F 60.3°F 60.4°F
Oct 12 59.3°F 60.0°F 60.1°F
Oct 13 58.4°F 59.5°F 59.8°F
Oct 14 58.6°F 59.0°F 59.5°F
Oct 15 59.9°F 58.7°F 59.5°F
Oct 16 59.3°F 58.1°F 59.4°F
Oct 17 59.6°F 57.4°F 58.9°F
Oct 18 58.3°F 56.8°F 58.6°F
Oct 19 57.4°F 56.1°F 58.2°F
Oct 20 56.7°F 56.4°F 58.0°F
Oct 21 56.5°F 56.2°F 58.1°F
Oct 22 56.2°F 57.6°F 58.0°F
Oct 23 55.9°F 57.8°F 57.6°F
Oct 24 55.6°F 57.3°F 57.6°F
Oct 25 55.3°F 56.2°F 57.3°F
Oct 26 55.0°F 55.9°F 57.1°F
Oct 27 55.0°F 56.2°F 57.0°F
Oct 28 54.7°F 56.0°F 56.8°F
Oct 29 54.7°F 55.8°F 56.8°F
Oct 30 54.0°F 55.4°F 56.1°F
Oct 31 53.6°F 55.0°F 55.7°F
Nov 1 53.5°F 55.0°F 55.5°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 16, 2026, dipping to 32.5°F. The average readings by season are 41.0°F in Winter, 45.1°F in Spring, 65.2°F in Summer, and 58.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
South Boston 54.4°F 32mi
Boston 54.4°F 34mi
Bristol 57.2°F 36mi
Providence 57.1°F 39mi

* current water temperature in this city

** straight line distance from Plymouth