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 11.93°C. 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 Kingdom > 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.

53.5

°F

May 2, 02:54

Trend:

increasing

Yesterday:

53.4°F

Tomorrow:

53.7°F

Sunrise:

05:51

Sunset:

20:37

Day Length:

14 h. 46 min.

Plymouth in May

Minimum:

50.4°F

Average:

51.5°F

Maximum:

52.6°F

Sea water temperature in Plymouth today

As of now, in Plymouth, the water temperature is 53.5°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 1.7°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 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 maximum temperature for this date. The maximum temperature recorded for this date was 54.1°F on 2025, while the historical minimum was 49.7°F on 2018.

latest data

last year

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 54.1°F, with minimum temperature starting at 53.7°F, while the maximum might reach 54.7°F.

Daily water temperature in Plymouth

Date	Current Year actual* / forecast**	last year	10 years average
Apr 18	52.1°F	51.3°F	50.9°F
Apr 19	52.5°F	51.6°F	51.1°F
Apr 20	52.1°F	51.4°F	51.1°F
Apr 21	51.9°F	52.3°F	51.3°F
Apr 22	52.0°F	52.4°F	51.5°F
Apr 23	52.3°F	52.7°F	51.5°F
Apr 24	52.7°F	52.8°F	51.6°F
Apr 25	52.9°F	52.8°F	51.6°F
Apr 26	52.8°F	53.1°F	51.6°F
Apr 27	53.4°F	52.9°F	51.7°F
Apr 28	53.8°F	52.8°F	51.7°F
Apr 29	53.5°F	53.6°F	51.7°F
Apr 30	53.5°F	53.5°F	51.7°F
May 1	53.4°F	54.2°F	51.7°F
May 2	53.5°F	54.1°F	51.7°F
May 3	53.7°F	55.4°F	51.9°F
May 4	53.7°F	55.1°F	52.0°F
May 5	54.0°F	55.1°F	52.2°F
May 6	54.1°F	54.6°F	52.4°F
May 7	54.4°F	54.6°F	52.6°F
May 8	54.5°F	54.8°F	52.8°F
May 9	54.7°F	55.1°F	52.9°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, 51.2°F in Spring, 60.5°F in Summer, and 59.1°F in Autumn.