All data are in degrees Fahrenheit

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Water temperature in Manhattan

Detailed information about the current water temperature in Manhattan. 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.
Sea temperature in Manhattan now

41.1

°F

January 4, 04:33

Trend:

stable

Yesterday:

39.6°F

Tomorrow:

41.0°F

Sunrise:

07:20

Sunset:

16:42

Day Length:

9 h. 22 min.

Manhattan in January

Minimum:

38.5°F

Average:

42.6°F

Maximum:

48.4°F

Sea water temperature in Manhattan today

As of now, in Manhattan, the water temperature is 41.1°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 1.6°F lower 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 fall a bit.

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 minimum temperature for this date. The maximum temperature recorded for this date was 45.2°F on 2016, while the historical minimum was 41.2°F on 2018.

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 40.5°F, the minimum temperature may reach 39.9°F, and the maximum might stay at 41.0°F.

Daily water temperature in Manhattan

Date Current Year

actual* / forecast**

last year 10 years average
Jan 1 38.9°F 42.6°F 42.6°F
Jan 2 39.5°F 43.3°F 42.8°F
Jan 3 39.6°F 42.5°F 42.7°F
Jan 4 41.1°F 42.7°F 42.7°F
Jan 5 41.0°F 42.4°F 42.6°F
Jan 6 41.0°F 42.1°F 42.6°F
Jan 7 40.9°F 42.0°F 42.5°F
Jan 8 40.5°F 41.6°F 42.1°F
Jan 9 40.2°F 41.0°F 41.8°F
Jan 10 40.0°F 39.2°F 41.6°F
Jan 11 39.9°F 38.7°F 41.5°F
Dec 21 40.9°F 44.2°F 44.5°F
Dec 22 41.0°F 44.2°F 44.3°F
Dec 23 40.3°F 44.1°F 44.3°F
Dec 24 40.4°F 44.0°F 44.3°F
Dec 25 40.5°F 44.0°F 44.1°F
Dec 26 40.8°F 41.7°F 43.4°F
Dec 27 39.5°F 40.4°F 42.7°F
Dec 28 39.6°F 41.3°F 42.7°F
Dec 29 39.1°F 41.3°F 42.5°F
Dec 30 39.3°F 42.6°F 42.9°F
Dec 31 39.2°F 44.2°F 42.7°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 Manhattan by month

In Manhattan, the months July through August offer comfortable swimming conditions, which amounts to 52 swimming days.
The warmest water in Manhattan was recorded on July 31, 2025, reaching a 78.9°F. While the coldest temperature occurred on February 23, 2025, dipping to 34.1°F. The average readings by season are 41.8°F in Winter, 48.3°F in Spring, 71.6°F in Summer, and 63.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
New York City 42.2°F 5mi
The Bronx 38.9°F 7mi
Jersey City 42.2°F 7mi
Brooklyn 40.2°F 9mi
Queens 41.1°F 10mi

* current water temperature in this city

** straight line distance from Manhattan