Best time to visit Knysna
The best time to visit Knysna is from December through March when the average high temperature is around 25°C (77°F).
Knysna is pleasant year-round, although there are rain showers throughout the year, less frequently between May and July.
Knysna weather
Knysna experiences a subtropical climate with mild winters and warm summers.
Which is the hottest month in Knysna?
The hottest month in Knysna is usually February, with an average high temperature of 26°C (78°F), with moderate heat and humidity, and a low of 16°C (60°F).
However, on the warmest days of the month, the temperature may climb to around 34°C (93°F).
The warm summer season lasts from mid-December to late-March, with an average daily high temperature above 24°C (85°F).
Which is the coldest month in Knysna?
The coldest month of the year in Knysna is July, with an average high of 20°C (68°F) and a low of 6°C (42°F).
The cool season lasts from early-June to late-September, with an average daily high temperature below 21°C (70°F).
Which is the sunniest month in Knysna?
The sunniest time of year in Knysna is usually June with an average of seven hours of sunshine per day; that's on average 67% of daylight hours.
What is the humidity in Knysna?
Knysna experiences some seasonal variation in perceived humidity, with approximate average relative humidity calculated at between 65% – 79% over the course of the year.
The more humid time of year lasts from December through March, during which time the comfort level is muggy or oppressively humid at least 5% of the time.
The months with the most muggy days in Knysna are January and February, when around five days in each month are muggy.
We derive the humidity comfort level from the dew point temperature, which measures moisture content in the air. A higher dew point feels muggy and uncomfortable.
April through November experience lower humidity levels, with less than one day in each month that is humid.
When is the sea warmest in Knysna?
The sea is usually at its warmest in Knysna in February when water temperatures average 22°C (71°F), which is cool for swimming.
The time of year with warmer water lasts from mid-December to mid-March, with an average temperature above 20°C (68°F).
The time of year with cooler water lasts from June through October, with an average temperature below 17°C (62°F), which is very cold for swimming.
Which month has the most rain in Knysna?
Rain falls throughout the year in Knysna. October usually has the most number of wet days, with 65mm (2.5in) of rainfall on average, distributed across 12 days.
The months with the least rainfall are June and July, with 45mm (2in) of rainfall on average, distributed across eight days.
Which is the windiest month in Knysna?
The windiest month of the year in Knysna is October, with an average hourly wind speed of 12 kilometres per hour (7.5 mph; 6.5 knots).
The windy part of the year lasts from late-May to mid-February, with average wind speeds of more than 11 kilometres per hour (7 mph; 6 knots).
The less-windy time of year lasts from mid-February to late-May. The calmest month of the year in Knysna is April, with an average hourly wind speed of 10 kilometres per hour (3 mph; 2.7 knots).
The predominant average hourly wind direction varies throughout the year in Knysna.
Knysna Weather Averages
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Average high temperature (°C) | |||||||||||
| 25 | 26 | 25 | 24 | 23 | 21 | 20 | 20 | 21 | 22 | 23 | 24 |
| Average low temperature (°C) | |||||||||||
| 15 | 16 | 14 | 12 | 10 | 8 | 7 | 7 | 9 | 11 | 12 | 14 |
| Average daily sunshine (hrs) | |||||||||||
| 7 | 7 | 6 | 6 | 6 | 6 | 7 | 7 | 6 | 7 | 7 | 7 |
| Average daily daylight (hrs) | |||||||||||
| 14 | 13 | 12 | 11 | 10 | 10 | 10 | 11 | 12 | 13 | 14 | 14 |
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| Average relative humidity (%) | |||||||||||
| 77 | 79 | 78 | 74 | 70 | 65 | 66 | 69 | 72 | 75 | 75 | 76 |
| UV Index (max) | |||||||||||
| 11+ | 11 | 9 | 6 | 3 | 3 | 3 | 4 | 6 | 8 | 11 | 11+ |
| Average days of rainfall (≥1mm) | |||||||||||
| 11 | 11 | 11 | 10 | 9 | 8 | 8 | 10 | 10 | 12 | 11 | 11 |
| Average monthly rainfall (mm) | |||||||||||
| 65 | 60 | 70 | 70 | 55 | 45 | 45 | 70 | 60 | 65 | 60 | 60 |
| Average wind speed (km/h) | |||||||||||
| 11 | 11 | 10 | 10 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Average sea temperature (°C) | |||||||||||
| 21 | 22 | 21 | 19 | 19 | 18 | 17 | 17 | 17 | 18 | 19 | 20 |
| Knysna, RSA | |||||||||||
Source: Meteorological data for Knysna is based on weather statistics gathered for the period 1998 to 2020 from the South African Weather Service.
Advice on the best time to visit a particular destination is based on average local weather statistics, when the weather conditions are generally better than at other times of the year. We consider high and low temperatures, risk of rain (and thunderstorms, etc.), amount of sunshine and sea temperature. For general outdoor activities we favour clear, rainless days with a temperature range between 18°C (64°F) and 27°C (80°F); and for hot-weather activities we favour clear, rainless days with a temperature range between 24°C (75°F) and 32°C (89°F). Often, the best times to visit correspond to high season and therefore involve higher prices.
Latest update: Best time to visit Knysna: 2 March, 2024
Disclaimer: The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data and conditions at any given location and time are unpredictable and variable. We assume no responsibility and can not be held legally responsible for any decisions made on the basis of the information presented on this site.
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