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 19.1°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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.

66.4

°F

August 3, 08:38

Trend:

increasing

Yesterday:

65.6°F

Tomorrow:

66.7°F

Sunrise:

05:38

Sunset:

19:59

Day Length:

14 h. 21 min.

Plymouth in August

Minimum:

36.5°F

Average:

40.8°F

Maximum:

43.7°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 66.4°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.9°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 is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 72.9°F on 2020, while the historical minimum was 65.9°F on 2023.

latest data

last year

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 minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 67.2°F, with minimum temperature starting at 66.7°F, while the maximum might reach 67.4°F.

Daily water temperature in Plymouth

Date	Current Year actual* / forecast**	last year	10 years average
Jul 20	65.4°F	70.0°F	68.6°F
Jul 21	63.1°F	69.8°F	68.1°F
Jul 22	63.1°F	66.2°F	68.1°F
Jul 23	65.6°F	63.7°F	68.1°F
Jul 24	67.5°F	65.1°F	68.1°F
Jul 25	64.4°F	65.4°F	68.0°F
Jul 26	65.9°F	67.9°F	68.2°F
Jul 27	66.3°F	66.1°F	68.2°F
Jul 28	67.2°F	63.8°F	67.8°F
Jul 29	68.3°F	65.6°F	68.0°F
Jul 30	68.5°F	68.4°F	68.7°F
Jul 31	67.7°F	69.7°F	69.1°F
Aug 1	65.5°F	70.8°F	68.1°F
Aug 2	65.6°F	67.9°F	68.0°F
Aug 3	66.4°F	66.7°F	68.3°F
Aug 4	66.7°F	67.3°F	68.6°F
Aug 5	66.9°F	67.7°F	68.8°F
Aug 6	67.3°F	68.0°F	69.1°F
Aug 7	67.4°F	69.2°F	69.2°F
Aug 8	67.2°F	69.0°F	69.1°F
Aug 9	67.4°F	69.3°F	69.3°F
Aug 10	67.4°F	69.3°F	69.3°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	67.5°F	32mi
Boston	67.5°F	34mi
Bristol	73.8°F	36mi
Providence	74.3°F	39mi

* current water temperature in this city

** straight line distance from Plymouth