Knysna Weather in May
What's the weather like in Knysna (Western Cape) in May 2025?
The climate in Knysna during May can be summarized as mild and reasonably dry.
May is in the fall / autumn in Knysna and is typically the 6th coldest month of the year. Daytime maximum temperatures average around 20°C (69°F), whilst at night 12°C (54°F) is normal.
| Daytime temperature | 20.4°C 68.7°F |
|---|---|
| Nightly temperature | 12°C 53.6°F |
| Average temperature | 16.2°C 61.2°F |
| Daily sunshine | 6.8 hrs |
| Avg rainfall | 71 mm 2.8 ins |
| Rainy days | 9 days |
| Sea temperature | 19.8°C 67.7°F |
| Humidity | 71% |
| Windspeed | 11.2kph 7 mph |
On average May is the 6th driest month of the year in Knysna with around 71mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
May temperatures in Knysna
May rainfall
May hourly sunshine
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 May 2025.
Other monthly averages
Knysna weather stats
| 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 |
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