Nukualofa Sea Temperature

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

Water temperature in Nukualofa right now

Below is the current sea temperature for Nukualofa, Tonga on 15th November 2025.

25.42° C

(77.76° F)

  • yesterday: 25.44° C (77.8° F)
  • a week ago: 26.91° C (80.44° 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 Nukualofa on November 15th over the last 10 years is 25.7° C (78.27° F), with a low temperature of 24.42° C (75.96° F) and a high of 26.49° C (79.68° F).

Analysis and forecast for Nukualofa water temperatures

The water temperature in Nukualofa today is lower than the average temperature of 25.7° C (78.27° F) and the temperature on this day last year, 15th November 2024, was 25.35° C (77.63° F).

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

Date Temperature (Celsius) Temperature (Fahrenheit)
November 15 25.42° C 77.76° F
November 14 25.44° C 77.8° F
November 13 26.57° C 79.83° F
November 12 26.41° C 79.54° F
November 11 26.42° C 79.56° F
November 10 26.61° C 79.9° F
November 9 26.23° C 79.21° F
November 8 26.91° C 80.44° F
November 7 26.92° C 80.46° F
November 6 26.06° C 78.91° F
November 5 25.62° C 78.12° F
November 4 25.52° C 77.94° F
November 3 25.33° C 77.59° F
November 2 25.24° C 77.43° F
November 1 25.21° C 77.38° F
October 31 25.21° C 77.38° F
October 30 25.26° C 77.47° F
October 29 25.15° C 77.27° F
October 28 25.08° C 77.14° F
October 27 24.87° C 76.77° F
October 26 24.52° C 76.14° F
October 25 24.42° C 75.96° F
October 24 24.15° C 75.47° F
October 23 24° C 75.2° F
October 22 23.98° C 75.16° F
October 21 23.81° C 74.86° F
October 20 24.02° C 75.24° F
October 19 24.25° C 75.65° F
October 18 24.04° C 75.27° F
October 17 24° C 75.2° F
October 16 24.08° C 75.34° 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 Nukualofa by month

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

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

Nukualofa map and nearby water temperatures

Locations near Nukualofa

The highest temperature in Tonga today is 26.83° C (80.3° F) in Neiafu. The lowest is in Ohonua, where the temperature of the water is 24.62° C (76.32° F).

Why measure sea surface temperatures (SST) in Nukualofa?

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

  • "Nukualofa Sea Temperature". SeaTemperatures.net. Accessed on November 15, 2025. http://seatemperatures.net/australia-and-oceania/tonga/nukualofa/.

  • "Nukualofa Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/australia-and-oceania/tonga/nukualofa/. Accessed 15 November, 2025

  • Nukualofa Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/australia-and-oceania/tonga/nukualofa/.