Knysna weather in August 2025

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Knysna in August. Check more long-term weather averages for Knysna in August before you book your next holiday to South Africa in 2025/2026.

  • 18°C maximum daytime temperature in August in Knysna18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in August in Knysna10
    10 days with some rainfall
  • 10°C minimum night-time temperature in August in Knysna10
    10°C min night temperature
  • 11 hours of daylight per day in August in Knysna11
    11 hours of daylight per day
  • No heat & humidity in August in Knysna0
    No heat & humidity
  • 95 mm monthly rainfall in August in Knysna95
    95 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in August in Knysna4
    4 (Moderate) UV index
  • 17°C sea temperature in August in Knysna17
    17°C sea temperature

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The August weather guide for South Africa (Knysna) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about South Africa

How hot is it in Knysna in August?

Daytime temperatures usually reach 18°C in Knysna in August, falling to 10°C at night.

How sunny is it in Knysna in August?

There are normally 7 hours of bright sunshine each day in Knysna in August - that's 64% of daylight hours.

How warm is the sea around Knysna in August?

The average sea temperature around Knysna in August is 17°C.

Does it rain in Knysna in August?

There are usually 10 days with some rain in Knysna in August and the average monthly rainfall is 95mm.

Knysna August sunrise & sunset times

Browse the sunrise and sunset times for Knysna in August 2025. Select a month to view Knysna sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 07:20 17:48
Saturday, 16th August 2025 07:06 17:59
Sunday, 31st August 2025 06:47 18:09

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