| n the Southern Cape Region the mean daily maximum temperature range from 23.8C (74.8 F) in February and 18.2C (64.8F) in August. Mean minimums are 19.7C (67.5F) for February and 8.9C (48.0F) for August. Frost is infrequent to absent and hot, dry Bergwinds (similar to the Fohn of Europe) during winter contribute to an altogether equitable climate. Absolute maximums do occasionally reach 38C (100F). On February 19, 2002 Knysna recorded a daily maximum of 41C (105.8F) the highest for decades. he average annual relative humidity is 88%. Knysna is surrounded by indigenous forests that survive on meagre rainfalls compared to rainforests worldwide, averaging from 550mm to a high of 950mm per annum. Most of the southern facing slopes will receive on average 550mm, with portions of the foothills receiving up to 1200mm per annum. ater is the lifeblood of the indigenous forests - borne by the moist winds from the Indian Ocean, which flow over coastal plateaus and up the mountain sides of the interior. When air rises, the moisture condensates, and the winds shed their precious cargo in the form of mist or rain. ain falls all year round but peaks in March-April and September-October (maxima in early and late Summer). Rainfall is almost exclusively orographic; thunderstorms are rare and contribute little to the annual rainfall. Weather Forecast - South Africa |