Also consider one of our other suggestions for December.
The average maximum temperature in Knysna in December is 23°. The average maximum temperature is 21° in the previous month and 24° in the next month.
The average temperature in Knysna in December is 19°. The average temperature ranges is 17° in the previous month and 20° in the next month.
The average minimum temperature in Knysna in December is 15°. The minimum temperature is 13° in the previous month and 16° in the next month.
The average day light hours per day in Knysna in December are 14.4 and there are 10.2 hours of sunshine per day on average during December making it a very sunny and pleasant month with long bright days.
The ultraviolet index in Knysna in December is typically 13.7 during December. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. 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 December is 20.2° which is comfortable for swimming though some may prefer warmer water.
The average total rainfall in Knysna in December is 0.5cm and on average there are 10.8 rainy days in December making it a slightly wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Knysna in December is 17° which is OK for most but slightly uncomfortable for some. The dew point is 15° in the previous month and 18° in the next month.
The average maximum relative humidity in Knysna in December is typically 94.7%. The maximum relative humidity is 95.4% in the previous month and 95.9% in the next month.
The average relative humidity in Knysna in December is typically 78.4%. The average relative humidity is 78.3% in the previous month and 80% in the next month.
The average maximum wind speed in Knysna in December is typically 25kmh. The average maximum wind speed is 26kmh in the previous month and 23kmh in the next month.
The average wind speed in Knysna in December is typically 12kmh. The average wind speed is 12kmh in the previous month and 10kmh in the next month.
The average wind direction in Knysna in December is from the South.
