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 4.74°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.

40.5

°F

March 11, 05:04

Trend:

stable

Yesterday:

38.4°F

Tomorrow:

40.5°F

Sunrise:

07:02

Sunset:

18:44

Day Length:

11 h. 42 min.

Plymouth in March

Minimum:

40.3°F

Average:

42.4°F

Maximum:

45.5°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 40.5°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 higher than the average recorded on this particular day in recent years. Since yesterday, there was a noticeable increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. It is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 41.3°F on 2016, while the historical minimum was 36.7°F on 2019.

latest data

last year

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 40.7°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
Feb 25	34.4°F	34.5°F	37.5°F
Feb 26	34.0°F	34.7°F	37.7°F
Feb 27	34.5°F	36.0°F	37.9°F
Feb 28	34.3°F	36.1°F	38.1°F
Mar 1	35.3°F	38.0°F	38.3°F
Mar 2	35.5°F	37.1°F	38.1°F
Mar 3	34.8°F	36.8°F	38.2°F
Mar 4	34.1°F	36.4°F	38.0°F
Mar 5	35.1°F	37.4°F	38.1°F
Mar 6	35.6°F	37.4°F	38.0°F
Mar 7	36.0°F	37.5°F	38.3°F
Mar 8	36.1°F	39.2°F	38.2°F
Mar 9	36.2°F	38.1°F	38.6°F
Mar 10	38.4°F	37.4°F	38.9°F
Mar 11	40.5°F	39.1°F	39.4°F
Mar 12	40.5°F	39.6°F	39.4°F
Mar 13	40.8°F	40.2°F	39.7°F
Mar 14	40.8°F	40.7°F	39.7°F
Mar 15	40.7°F	40.1°F	39.5°F
Mar 16	40.6°F	41.8°F	39.4°F
Mar 17	40.9°F	41.2°F	39.8°F
Mar 18	40.9°F	40.8°F	39.8°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	39.4°F	32mi
Boston	39.4°F	34mi
Bristol	39.8°F	36mi
Providence	38.3°F	39mi

* current water temperature in this city

** straight line distance from Plymouth