Also consider one of our other suggestions for September.
The average maximum temperature in Knysna in September is 19°. The average maximum temperature is 19° in the previous month and 20° in the next month.
The average temperature in Knysna in September is 14°. The average temperature ranges is 13° in the previous month and 16° in the next month.
The average minimum temperature in Knysna in September is 9°. The minimum temperature is 8° in the previous month and 11° in the next month.
The average day light hours per day in Knysna in September are 11.9 and there are 7.5 hours of sunshine per day on average during September making it a quite sunny month with some cloud cover.
The ultraviolet index in Knysna in September is typically 7.5 during September. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Knysna in September is 17.1° which is cool for swimming, shorty wetsuit may help you extend your time in the water.
The average total rainfall in Knysna in September is 0.2cm and on average there are 9.4 rainy days in September making it a dry time to visit the beach.
The maximum dew point (an indicator of humidity) in Knysna in September is 12° which is very comfortable. The dew point is 10° in the previous month and 14° in the next month.
The average maximum relative humidity in Knysna in September is typically 93.8%. The maximum relative humidity is 92.2% in the previous month and 95.4% in the next month.
The average relative humidity in Knysna in September is typically 74.8%. The average relative humidity is 71.4% in the previous month and 78.6% in the next month.
The average maximum wind speed in Knysna in September is typically 24kmh. The average maximum wind speed is 24kmh in the previous month and 25kmh in the next month.
The average wind speed in Knysna in September is typically 11kmh. The average wind speed is 12kmh in the previous month and 12kmh in the next month.
The average wind direction in Knysna in September is from the West-Northwest.
