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

52.6

°F

December 14, 05:03

Trend:

decreasing

Yesterday:

52.6°F

Tomorrow:

52.4°F

Sunrise:

08:09

Sunset:

16:13

Day Length:

8 h. 4 min.

Plymouth in December

Minimum:

49.6°F

Average:

50.9°F

Maximum:

51.8°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 52.6°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 0.7°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 54.1°F on 2016, while the historical minimum was 52.6°F on 2019.

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 52.0°F, the minimum temperature may reach 51.7°F, and the maximum might stay at 52.4°F.

Daily water temperature in Plymouth

Date Current Year

actual* / forecast**

last year 10 years average
Nov 30 53.9°F 55.0°F 54.6°F
Dec 1 54.1°F 54.9°F 54.5°F
Dec 2 54.1°F 55.2°F 54.4°F
Dec 3 53.9°F 55.1°F 54.3°F
Dec 4 53.8°F 55.1°F 54.1°F
Dec 5 53.4°F 54.9°F 54.0°F
Dec 6 53.5°F 55.2°F 53.9°F
Dec 7 53.3°F 54.9°F 53.8°F
Dec 8 53.3°F 54.7°F 53.8°F
Dec 9 53.3°F 54.7°F 53.7°F
Dec 10 53.5°F 54.5°F 53.5°F
Dec 11 53.3°F 54.3°F 53.4°F
Dec 12 53.3°F 54.2°F 53.4°F
Dec 13 52.6°F 54.1°F 53.3°F
Dec 14 52.6°F 53.9°F 53.3°F
Dec 15 52.4°F 53.7°F 53.1°F
Dec 16 52.2°F 53.3°F 52.9°F
Dec 17 52.0°F 53.1°F 52.7°F
Dec 18 52.0°F 53.0°F 52.6°F
Dec 19 51.9°F 53.0°F 52.6°F
Dec 20 51.8°F 53.0°F 52.5°F
Dec 21 51.7°F 52.9°F 52.4°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 August 15, 2022, reaching a 66.6°F. While the coldest temperature occurred on March 20, 2018, dipping to 45.6°F. The average readings by season are 50.9°F in Winter, 51.0°F in Spring, 60.4°F in Summer, and 59.1°F in Autumn.