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 7.39°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.

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.

45.3

°F

April 21, 01:18

Trend:

increasing

Yesterday:

45.0°F

Tomorrow:

45.5°F

Sunrise:

05:53

Sunset:

19:30

Day Length:

13 h. 37 min.

Plymouth in April

Minimum:

39.5°F

Average:

42.2°F

Maximum:

45.2°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 45.3°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 0.5°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 48.0°F on 2021, while the historical minimum was 42.4°F on 2018.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 45.8°F, with minimum temperature starting at 45.5°F, while the maximum might reach 46.2°F.

Daily water temperature in Plymouth

Date	Current Year actual* / forecast**	last year	10 years average
Apr 7	44.0°F	43.3°F	42.6°F
Apr 8	42.7°F	43.1°F	42.6°F
Apr 9	42.2°F	42.9°F	42.7°F
Apr 10	43.2°F	42.4°F	42.9°F
Apr 11	43.1°F	42.1°F	43.2°F
Apr 12	43.8°F	41.9°F	43.2°F
Apr 13	44.6°F	42.0°F	43.6°F
Apr 14	43.4°F	42.0°F	43.9°F
Apr 15	45.1°F	41.6°F	44.0°F
Apr 16	45.1°F	43.3°F	44.2°F
Apr 17	45.0°F	43.9°F	44.9°F
Apr 18	47.8°F	44.1°F	45.3°F
Apr 19	47.2°F	45.2°F	45.5°F
Apr 20	45.0°F	44.8°F	45.5°F
Apr 21	45.3°F	46.3°F	45.8°F
Apr 22	45.5°F	46.7°F	46.0°F
Apr 23	45.6°F	46.8°F	46.1°F
Apr 24	45.8°F	48.2°F	46.2°F
Apr 25	45.7°F	47.9°F	46.2°F
Apr 26	45.6°F	47.4°F	46.0°F
Apr 27	46.0°F	46.8°F	46.5°F
Apr 28	46.2°F	48.2°F	46.7°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 58.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
South Boston	47.1°F	32mi
Boston	47.1°F	34mi
Bristol	48.9°F	36mi
Providence	50.5°F	39mi

* current water temperature in this city

** straight line distance from Plymouth