What is the current water temperature in Cambridge?

Q: What is the current water temperature in Cambridge?

As of now, in Cambridge, the water temperature is 9.63°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.

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Water temperature in Cambridge

Detailed information about the current water temperature in Cambridge. 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.

49.3

°F

July 27, 05:35

Trend:

stable

Yesterday:

49.2°F

Tomorrow:

49.3°F

Sunrise:

07:28

Sunset:

17:06

Day Length:

9 h. 38 min.

Cambridge in August

Minimum:

63.2°F

Average:

64.9°F

Maximum:

66.9°F

Sea water temperature in Cambridge today

As of now, in Cambridge, the water temperature is 49.3°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 1.3°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 considerably 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 51.6°F on 2017, while the historical minimum was 48.1°F on 2025.

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 histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 49.1°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in Cambridge

Date	Current Year actual* / forecast**	last year	10 years average
Jul 13	49.5°F	48.8°F	50.9°F
Jul 14	49.9°F	49.1°F	50.9°F
Jul 15	50.8°F	49.2°F	51.0°F
Jul 16	51.0°F	49.1°F	50.9°F
Jul 17	50.0°F	49.0°F	50.9°F
Jul 18	50.4°F	48.8°F	51.0°F
Jul 19	50.7°F	49.1°F	51.0°F
Jul 20	51.1°F	48.4°F	50.8°F
Jul 21	51.7°F	47.5°F	50.5°F
Jul 22	51.9°F	48.2°F	50.9°F
Jul 23	50.6°F	48.2°F	50.6°F
Jul 24	50.8°F	48.8°F	50.7°F
Jul 25	51.0°F	46.8°F	50.3°F
Jul 26	49.2°F	47.5°F	50.5°F
Jul 27	49.3°F	48.1°F	50.6°F
Jul 28	49.3°F	48.8°F	50.6°F
Jul 29	49.4°F	49.3°F	50.7°F
Jul 30	49.1°F	47.8°F	50.5°F
Jul 31	49.0°F	48.5°F	50.3°F
Aug 1	48.6°F	47.0°F	49.9°F
Aug 2	49.0°F	47.7°F	50.3°F
Aug 3	49.1°F	48.4°F	50.5°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 Cambridge by month

In an average year, Cambridge offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Cambridge was recorded on January 29, 2018, reaching a 71.5°F. While the coldest temperature occurred on July 25, 2025, dipping to 46.8°F. The average readings by season are 64.5°F in Winter, 60.1°F in Spring, 51.4°F in Summer, and 55.4°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Hobart	50.8°F	7mi
Kingston	51.3°F	12mi
Brighton	52.4°F	14mi

* current water temperature in this city

** straight line distance from Cambridge