Knysna Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Knysna, Western Cape, South Africa. This average is based on long-term data collected between 1990 and 2020. Now, let's break down all the details for a clearer picture.
Generally, Knysna has a moderate amount of precipitation, averaging 673 mm (26 in) of rainfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Precipitation levels in Knysna remain relatively steady throughout the year. November has the most rain, with 72 mm (2.8 in) over 11 days. In June, this drops slightly to 49 mm (1.9 in), making the city's climate fairly predictable.
November, the wettest month, has a maximum daytime temperature of 21°C (70°F). The city receives 320 hours of sunshine in this period. During the driest month June you can expect a temperature of 19°C (66°F). For more detailed insights into the city's temperatures, visit our Knysna Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Explore Knysna's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Knysna spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in South Africa: City Comparison
The map below shows the annual precipitation across South Africa. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Knysna vs World: Rainfall Compared
Knysna's average annual precipitation is 673 mm (26 in). Let's compare this to some popular worldwide tourist destinations:
New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Knysna's weather, including sunshine hours, humidity levels, and temperature data, visit our Knysna Climate page.
