Sea Temperature in Knysna in September

© Gerson Schnorr

Complete information on the sea temperature range in the Indian Ocean in Knysna in September. Historical daily data. Climate details for September. Tips on swimming conditions and beach relaxation in Knysna. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Knysna Climate and Swimming Opportunities in September

Knysna lies within the Western Cape in South Africa. The average daytime temperature in Knysna in September is 20°C (67°F), while the nighttime average is 10°C (49°F). There are typically eight rainy days during the month, with a total precipitation of 52 mm (2.1 inches). The daylight duration in September in Knysna is 12 hours, with an average of 7 hours of sunshine per day. The average wind speed in September is 13 km/h (8 mph), and the humidity level is around 75%.

The water temperature in Knysna in September ranges from 15°C to 17°C (59°F to 63°F). At the beginning of the month, the average temperature is around 17°C (63°F), shifting to 17°C (63°F) by mid-September and reaching 16°C (61°F) in the last ten days. Overall, the average sea temperature in Knysna for September is 17°C (63°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.

Frequently Asked Questions About Water Temperatures in September in Knysna