The climate in Knysna during December can be summarized as warm and reasonably dry.
December is in the summer in Knysna and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 15°C (59°F) is normal.
Daytime temperature | 22.3°C 72.1°F |
---|---|
Nightly temperature | 14.8°C 58.6°F |
Average temperature | 18.5°C 65.3°F |
Daily sunshine | 9.7 hrs |
Avg rainfall | 65 mm 2.6 ins |
Rainy days | 11 days |
Sea temperature | 21.1°C 70°F |
Humidity | 74% |
Windspeed | 16.6kph 10 mph |
On average December is the 2nd driest month of the year in Knysna with around 65mm 2.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.7 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Knysna in December 2025.
Best places to visit in December
Hottest month: | February | 23.4°C 74.1°F |
---|---|---|
Driest month: | February | 62mm 2.4ins |
Sunniest month: | July | 7.2hrs |
Coldest month: | July | 17.8°C 64°F |
Wettest month: | August | 95mm 3.7ins |