This data the coastal Kommetjie 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 Kommetjie today is 11.7°C. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Kommetjie was recorded in 2007 and was 15.9°C, and the coldest was recorded in 2023 at 12.5°C. Sea water temperature in Kommetjie is expected to rise to 14.7°C in the next 10 days. September average water temperature in Kommetjie is 14.7°C, the minimum temperature is 10°C, and the maximum is 17°C.
The swimming season in Kommetjie lasts only one month - February. During this month, Kommetjie water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Kommetjie in winter reaches 14.9°C, in spring 15.1°C, in summer the average temperature rises to 17.6°C, and in autumn it is 15.9°C.
27 September 2025 |
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today temp |
11.7°C |
26 September 2025 |
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yesterday temp |
12.1°C |
The sea salinity in Kommetjie is 32.64‰, 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 Kommetjie. 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 Kommetjie. Data in table shown for 28 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 |
---|---|---|---|
9' 7" | 9' 11" | 9' 6" | 9' 4" |
2.91 m | 3.03 m | 2.9 m | 2.85 m |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
9' 5" | 9' 1" | 8' 7" | 7' 10" |
2.86 m | 2.77 m | 2.61 m | 2.4 m |
Data in a table show Kommetjie temperature today (28 September 2025). For more information and forecast for a few days, go to the weather forecast Kommetjie.
0-3 h | 3-6 h | 6-9 h | 9-12 h |
---|---|---|---|
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15.6°C | 15°C | 14.2°C | 15.5°C |
12-15 h | 15-18 h | 18-21 h | 21-24 h |
---|---|---|---|
![]() | ![]() | ![]() | ![]() |
17.9°C | 17.7°C | 16.4°C | 15.8°C |
You may also be interested in other sections of our site for Kommetjie: Sunrise and Sunset, Tides
These figures shows the average, minimum and maximum monthly sea temperature in Kommetjie. 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 Kommetjie 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
Month | Avr | Min | Max | |
---|---|---|---|---|
January | 17.8°C | 10.1°C | 21.1°C | cold |
Sea water temperature in Kommetjie in January | ||||
February | 17.9°C | 10.8°C | 21.3°C | cold |
Sea water temperature in Kommetjie in February | ||||
March | 16.8°C | 10°C | 20.4°C | cold |
Sea water temperature in Kommetjie in March | ||||
April | 15.5°C | 9.4°C | 18.8°C | cold |
Sea water temperature in Kommetjie in April | ||||
May | 15.3°C | 10.7°C | 18.2°C | cold |
Sea water temperature in Kommetjie in May | ||||
June | 15.3°C | 12.3°C | 17.6°C | cold |
Sea water temperature in Kommetjie in June | ||||
July | 14.8°C | 12.7°C | 17.2°C | cold |
Sea water temperature in Kommetjie in July | ||||
August | 14.6°C | 12.7°C | 16.1°C | cold |
Sea water temperature in Kommetjie in August | ||||
September | 14.7°C | 10°C | 17°C | cold |
Sea water temperature in Kommetjie in September | ||||
October | 14.9°C | 9.4°C | 17.5°C | cold |
Sea water temperature in Kommetjie in October | ||||
November | 15.8°C | 10°C | 18.6°C | cold |
Sea water temperature in Kommetjie in November | ||||
December | 17°C | 11.8°C | 20.4°C | cold |
Sea water temperature in Kommetjie in December |