Knysna Water Temperature

(Today) 2024

21.4°C / 70.5°F

The water will feel tepid. Swimming will be tolerable without a wetsuit, although it will take a little getting used to. If you intend to stay in the water for a while a 3/2mm wetsuit will be ideal.

Current weather

21°C / 70°F
(overcast clouds)
Partly cloudy
Wind
10 mph
Humidity
58%

The measurements for the water temperature in Knysna, Western Cape are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Knysna water temperature derived from many years of historical sea surface temperature data.

Knysna average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Knysna
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 18.7 19.1 18.6 17.5 16.9 16.4 16.5 15.8 16.6 16.9 17.9 18.7
Max °C 22.9 21.5 22.8 20.4 19.4 19.5 18.6 18.8 19.1 19.5 21.2 22.2
Min °F 67.3 67.3 67.2 64.6 63.4 62.7 62.5 61.6 62.8 63.5 65.5 67
Max °F 71.5 69.7 71.4 67.5 65.9 65.8 64.6 64.6 65.3 66.1 68.8 70.5

The warmest water temperature is in January with an average around 69.4°F / 20.8°C. The coldest month is August with an average water temperature of 63.1°F / 17.3°C.

7 day tide forecast for Knysna

ThuFriSatSunMonTueWed
  • High 01:08am
    (1.64m)
  • Low 07:01am
    (0.61m)
  • High 01:22pm
    (1.94m)
  • Low 07:44pm
    (0.41m)
  • High 02:00am
    (1.75m)
  • Low 07:53am
    (0.54m)
  • High 02:12pm
    (2.01m)
  • Low 08:30pm
    (0.35m)
  • High 02:47am
    (1.85m)
  • Low 08:41am
    (0.49m)
  • High 02:58pm
    (2.04m)
  • Low 09:13pm
    (0.33m)
  • High 03:31am
    (1.91m)
  • Low 09:27am
    (0.48m)
  • High 03:42pm
    (2.02m)
  • Low 09:54pm
    (0.34m)
  • High 04:14am
    (1.94m)
  • Low 10:11am
    (0.49m)
  • High 04:25pm
    (1.95m)
  • Low 10:33pm
    (0.37m)
  • High 04:56am
    (1.91m)
  • Low 10:55am
    (0.55m)
  • High 05:06pm
    (1.84m)
  • Low 11:11pm
    (0.44m)
  • High 05:38am
    (1.87m)
  • Low 11:39am
    (0.62m)
  • High 05:47pm
    (1.71m)
  • Low 11:50pm
    (0.54m)
7 day tide times for Knysna

*These tide times are estimates based on the nearest accurate location (Mosselbaai, South Africa) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.