Georgetown Sea Temperature

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

Water temperature in Georgetown right now

Below is the current sea temperature for Georgetown, Ascension Island on 28th May 2023.

27.73° C

(81.91° F)

  • yesterday: 27.66° C (81.78° F)
  • a week ago: 27.96° C (82.33° F)

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

The average sea temperature for Georgetown on May 28th over the last 10 years is 27.66° C (81.8° F), with a low temperature of 26.94° C (80.49° F) and a high of 28.35° C (83.03° F).

Analysis and forecast for Georgetown water temperatures

The water temperature in Georgetown today is higher than the average temperature of 27.66° C (81.8° F) and the temperature on this day last year, 28th May 2022, was 27.72° C (81.9° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
May 28 27.73° C 81.91° F
May 27 27.66° C 81.78° F
May 26 27.95° C 82.31° F
May 25 28.01° C 82.42° F
May 24 27.97° C 82.35° F
May 23 27.88° C 82.18° F
May 22 27.98° C 82.36° F
May 21 27.96° C 82.33° F
May 20 28.04° C 82.47° F
May 19 28.01° C 82.42° F
May 18 28.05° C 82.49° F
May 17 28.14° C 82.65° F
May 16 28.01° C 82.42° F
May 15 28.13° C 82.63° F
May 14 28.23° C 82.81° F
May 13 28.17° C 82.71° F
May 12 28.1° C 82.58° F
May 11 28.17° C 82.71° F
May 10 28.16° C 82.69° F
May 9 28.15° C 82.67° F
May 8 28.22° C 82.8° F
May 7 28.19° C 82.74° F
May 6 28.21° C 82.78° F
May 5 28.23° C 82.81° F
May 4 28.18° C 82.72° F
May 3 28.14° C 82.65° F
May 2 28.13° C 82.63° F
May 1 28.11° C 82.6° F
April 30 28.09° C 82.56° F
April 29 28.06° C 82.51° F
April 28 28.03° C 82.45° 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 Georgetown by month

The chart below shows the monthly average water temperature in Georgetown.

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

Georgetown map and nearby water temperatures

The highest temperature in Ascension Island today is 27.74° C (81.93° F) in Georgetown. The lowest is in Georgetown, where the temperature of the water is 27.74° C (81.93° F).

Why measure sea surface temperatures (SST) in Georgetown?

The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Georgetown 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 Georgetown 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 Georgetown 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.

  • "Georgetown Sea Temperature". Accessed on May 28, 2023.

  • "Georgetown Sea Temperature"., Accessed 28 May, 2023

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