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

58.8

°F

October 10, 19:37

Trend:

stable

Yesterday:

58.8°F

Tomorrow:

58.8°F

Sunrise:

07:30

Sunset:

18:36

Day Length:

11 h. 6 min.

Plymouth in October

Minimum:

49.8°F

Average:

51.2°F

Maximum:

51.9°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 58.8°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 1.1°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 stay about the same.

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 61.6°F on 2023, while the historical minimum was 59.0°F on 2018.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 58.5°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
Sep 26 59.3°F 62.0°F 61.1°F
Sep 27 59.5°F 61.9°F 61.1°F
Sep 28 59.3°F 61.4°F 60.9°F
Sep 29 59.2°F 61.4°F 60.7°F
Sep 30 59.2°F 61.2°F 60.6°F
Oct 1 59.2°F 60.8°F 60.5°F
Oct 2 59.4°F 60.5°F 60.5°F
Oct 3 59.5°F 60.7°F 60.5°F
Oct 4 59.7°F 60.5°F 60.3°F
Oct 5 59.4°F 60.5°F 60.2°F
Oct 6 59.1°F 60.4°F 60.1°F
Oct 7 59.1°F 60.5°F 60.0°F
Oct 8 58.6°F 60.2°F 59.9°F
Oct 9 58.8°F 60.4°F 59.8°F
Oct 10 58.8°F 60.2°F 59.9°F
Oct 11 58.8°F 60.1°F 59.9°F
Oct 12 58.6°F 60.1°F 59.7°F
Oct 13 58.5°F 59.6°F 59.6°F
Oct 14 58.5°F 59.6°F 59.6°F
Oct 15 58.6°F 59.5°F 59.7°F
Oct 16 58.4°F 59.4°F 59.5°F
Oct 17 58.3°F 59.6°F 59.5°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 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.