Hong Kong Sea Temperature
Looking to find out what the sea water temperature in Hong Kong is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Hong Kong and nearby locations.
Water temperature in Hong Kong right now
Below is the current sea temperature for Hong Kong, Hong Kong on 25th June 2025.
29.46° C
(85.02° F)
- yesterday: 29.31° C (84.75° F)
- a week ago: 28.02° C (82.44° 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 Hong Kong on June 25th over the last 10 years is 28.57° C (83.42° F), with a low temperature of 26.63° C (79.93° F) and a high of 30.98° C (87.76° F).
Analysis and forecast for Hong Kong water temperatures
The water temperature in Hong Kong today is higher than the average temperature of 28.57° C (83.42° F) and the temperature on this day last year, 25th June 2024, was 29.47° C (85.05° F).
The chart and table below shows the change in water temperature in Hong Kong over the last 30 days:
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 Hong Kong by month
The chart below shows the monthly average water temperature in Hong Kong.
For more detailed information on how the sea temperature in Hong Kong changes for each month of the year, choose from the months below.
Hong Kong map and nearby water temperatures
Locations near Hong Kong
The highest temperature in Hong Kong today is 28.78° C (83.8° F) in Yung Shue Wan. The lowest is in Hong Kong, where the temperature of the water is 28.41° C (83.13° F).
Why measure sea surface temperatures (SST) in Hong Kong?
The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Hong Kong 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 Hong Kong 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 Hong Kong 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.
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<a href="http://seatemperatures.net/asia/hong-kong/hong-kong/">Hong Kong Sea Temperature</a>
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"Hong Kong Sea Temperature". SeaTemperatures.net. Accessed on June 25, 2025. http://seatemperatures.net/asia/hong-kong/hong-kong/.
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"Hong Kong Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/asia/hong-kong/hong-kong/. Accessed 25 June, 2025
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Hong Kong Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/asia/hong-kong/hong-kong/.