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

52.9

°F

December 21, 17:05

Trend:

stable

Yesterday:

53.0°F

Tomorrow:

52.9°F

Sunrise:

08:15

Sunset:

16:16

Day Length:

8 h. 1 min.

Plymouth in December

Minimum:

49.6°F

Average:

50.8°F

Maximum:

51.8°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 52.9°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 0.6°F higher 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 stay about the same.

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 falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 53.9°F on 2015, while the historical minimum was 51.6°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 maximum recorded over the past years. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 52.8°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Plymouth

Date Current Year

actual* / forecast**

last year 10 years average
Dec 7 54.9°F 53.5°F 53.9°F
Dec 8 54.7°F 53.3°F 53.9°F
Dec 9 54.7°F 53.3°F 53.7°F
Dec 10 54.5°F 53.3°F 53.5°F
Dec 11 54.3°F 53.4°F 53.5°F
Dec 12 54.2°F 53.4°F 53.5°F
Dec 13 54.1°F 53.2°F 53.3°F
Dec 14 53.9°F 53.3°F 53.3°F
Dec 15 53.7°F 53.2°F 53.1°F
Dec 16 53.3°F 53.0°F 52.9°F
Dec 17 53.1°F 52.8°F 52.7°F
Dec 18 53.0°F 52.7°F 52.6°F
Dec 19 53.0°F 52.6°F 52.5°F
Dec 20 53.0°F 52.7°F 52.5°F
Dec 21 52.9°F 52.7°F 52.4°F
Dec 22 52.9°F 52.8°F 52.4°F
Dec 23 53.0°F 52.9°F 52.4°F
Dec 24 53.0°F 53.0°F 52.4°F
Dec 25 52.8°F 52.9°F 52.2°F
Dec 26 52.7°F 52.7°F 52.2°F
Dec 27 52.7°F 52.5°F 52.1°F
Dec 28 52.6°F 52.2°F 52.1°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, 50.9°F in Spring, 60.4°F in Summer, and 59.2°F in Autumn.