This data the coastal Bandar Seri Begawan sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.
Water temperature in Bandar Seri Begawan today is 29.6°C. Based on our historical data over a period of ten years, the warmest water in this day in the South China Sea near Bandar Seri Begawan was recorded in 2015 and was 30.6°C, and the coldest was recorded in 2009 at 29.2°C. Sea water temperature in Bandar Seri Begawan is expected to rise to 29.7°C in the next 10 days. September average water temperature in Bandar Seri Begawan is 29.8°C, the minimum temperature is 28.8°C, and the maximum is 31.3°C.
The swimming season in Bandar Seri Begawan lasts from January to December, twelve months per year! During those months, Bandar Seri Begawan water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Bandar Seri Begawan in winter reaches 28.6°C, in spring 29.5°C, in summer the average temperature rises to 30°C, and in autumn it is 29.7°C.
5 September 2025 |
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today temp |
29.6°C |
4 September 2025 |
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yesterday temp |
29.5°C |
The sea salinity in Bandar Seri Begawan is 29.36‰, and the average salinity of the World Ocean is 35‰.
Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Bandar Seri Begawan. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Bandar Seri Begawan. Data in table shown for 5 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
0' 11" | 0' 11" | 0' 10" | 0' 9" |
0.29 m | 0.27 m | 0.25 m | 0.24 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
0' 9" | 0' 8" | 0' 7" | 0' 7" |
0.22 m | 0.2 m | 0.19 m | 0.19 m |
Data in a table show Bandar Seri Begawan temperature today (5 September 2025). For more information and forecast for a few days, go to the weather forecast Bandar Seri Begawan.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
23.8°C | 22.5°C | 22.4°C | 25.7°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
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31.4°C | 27.5°C | 24.9°C | 24°C |
You may also be interested in other sections of our site for Bandar Seri Begawan: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Bandar Seri Begawan. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Bandar Seri Begawan on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve