Water temperature in Plettenberg Bay

This data the coastal Plettenberg Bay 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.

Current sea temperature in Plettenberg Bay

Water temperature in Plettenberg Bay today is 17°C. Based on our historical data over a period of ten years, the warmest water in this day in Plettenberg Bay was recorded in 2019 and was 17.8°C, and the coldest was recorded in 2017 at 15.4°C. Sea water temperature in Plettenberg Bay is expected to be constant 17°C in the next 10 days. September average water temperature in Plettenberg Bay is 16.6°C, the minimum temperature is 14.8°C, and the maximum is 18.7°C.

The swimming season in Plettenberg Bay lasts from December to March. During those months, Plettenberg Bay water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Plettenberg Bay in winter reaches 16.6°C, in spring 17.3°C, in summer the average temperature rises to 20.6°C, and in autumn it is 18.4°C.

Plettenberg Bay water temperature now

The sea salinity in Plettenberg Bay is 35.03‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Plettenberg Bay for today

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 Plettenberg Bay. 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 Plettenberg Bay. 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)

Surf report in Plettenberg Bay

Plettenberg Bay weather forecast

Current temperature and weather

Data in a table show Plettenberg Bay temperature today (28 September 2025). For more information and forecast for a few days, go to the weather forecast Plettenberg Bay.

0-3 h	3-6 h	6-9 h	9-12 h
14.3°C	14.3°C	13.9°C	19°C

12-15 h	15-18 h	18-21 h	21-24 h
19.2°C	19.4°C	16.8°C	16.5°C

Plettenberg Bay water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Plettenberg Bay. 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 Plettenberg Bay 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

Chart monthly average water temperature in Plettenberg Bay

The nearest beaches and cities from Plettenberg Bay with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Knysna	17.5°C	19°C		2.99 m
Buffelsbaai	17.5°C	19°C		2.94 m
Sedgefield	17.3°C	18°C		2.72 m
Wilderness	17.7°C	18°C		2.74 m
Victoria Bay	17.7°C	18°C		2.66 m
George	17.7°C	18°C		2.6 m
Mossel Bay	17.9°C	18°C		2.28 m
Hartenbos	17.7°C	18°C		2.45 m
Cape Saint Francis	17.7°C	20°C		3.26 m
St Francis Bay	17.6°C	20°C		2.12 m

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Our report for Plettenberg Bay is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.