New Castle Sea Temperature

Looking to find out what the sea water temperature in New Castle is for today and the next few days? Below are data and charts that will give you information about sea temperatures in New Castle and nearby locations.

Water temperature in New Castle right now

Below is the current sea temperature for New Castle, United States on 24th April 2024.

15.46° C

(59.84° F)

  • yesterday: 13.15° C (55.67° F)
  • a week ago: 13.61° C (56.5° F)

At this temperature, water will feel cold compared to a swimming pool, but with a bit of experience and practice most people will find the water relatively comfortable to swim in.

The average sea temperature for New Castle on April 24th over the last 10 years is 12.26° C (54.07° F), with a low temperature of 10.32° C (50.58° F) and a high of 15.48° C (59.86° F).

Analysis and forecast for New Castle water temperatures

The water temperature in New Castle today is higher than the average temperature of 12.26° C (54.07° F) and the temperature on this day last year, 24th April 2023, was 15.48° C (59.86° F).

The chart and table below shows the change in water temperature in New Castle over the last 30 days:

Date Temperature (Celsius) Temperature (Fahrenheit)
April 24 15.46° C 59.84° F
April 23 13.15° C 55.67° F
April 23 13.15° C 55.67° F
April 22 12.99° C 55.38° F
April 21 13.1° C 55.58° F
April 20 12.88° C 55.18° F
April 19 13.47° C 56.25° F
April 18 13.66° C 56.59° F
April 17 13.61° C 56.5° F
April 16 12.11° C 53.8° F
April 15 11.79° C 53.22° F
April 14 12° C 53.6° F
April 13 11.98° C 53.56° F
April 12 11.42° C 52.56° F
April 11 10.09° C 50.16° F
April 10 10.63° C 51.13° F
April 9 10.06° C 50.11° F
April 8 10.26° C 50.47° F
April 7 10.08° C 50.14° F
April 6 9.97° C 49.95° F
April 5 10° C 50° F
April 4 10.1° C 50.18° F
April 3 9.97° C 49.95° F
April 2 9.86° C 49.75° F
April 1 9.89° C 49.8° F
March 31 9.67° C 49.41° F
March 30 9.36° C 48.85° F
March 29 9.18° C 48.52° F
March 28 9° C 48.2° F
March 27 8.73° C 47.71° F

The actual nearshore temperatures may vary by several degrees and this can also be heavily affected by weather. Strong winds can cause cold, deep waters to replace the surface waters that had been warmed by the sun, and heavy rain can also reduce the temperature of the sea surface temperature as well.

Water temperature in New Castle by month

The chart below shows the monthly average water temperature in New Castle.

For more detailed information on how the sea temperature in New Castle changes for each month of the year, choose from the months below.

New Castle map and nearby water temperatures

Locations near New Castle

The highest temperature in United States today is 27.78° C (82.01° F) in Duck Key. The lowest is in Barrow, where the temperature of the water is -1.71° C (28.93° F).

Why measure sea surface temperatures (SST) in New Castle?

The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as New Castle because they want to understand and learn how the ocean communicates with the atomosphere of Earth.

SST is one measure that provides information on the global climate, and it can be used to predict the weather in New Castle as well as atmospheric model simulations and to study marine ecosystems in the area.

Data source and citation

Raw data for the calculations made to find the sea surface temperature in New Castle comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.

The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.

If you'd like to use any of the information above in the format it is presented, please use the citation tool below.

  • "New Castle Sea Temperature". SeaTemperatures.net. Accessed on April 24, 2024. http://seatemperatures.net/north-america/united-states/new-castle/.

  • "New Castle Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/north-america/united-states/new-castle/. Accessed 24 April, 2024

  • New Castle Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/north-america/united-states/new-castle/.