Johannesburg weather in August 2025

Expect daytime maximum temperatures of 20°C in Johannesburg, South Africa in August based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 20°C maximum daytime temperature in August in Johannesburg20
    20°C max day temperature
  • 10 hours of sunshine per day
  • 2 days with some rainfall in August in Johannesburg2
    2 days with some rainfall
  • 5°C minimum night-time temperature in August in Johannesburg5
    5°C min night temperature
  • 11 hours of daylight per day in August in Johannesburg11
    11 hours of daylight per day
  • No heat & humidity in August in Johannesburg0
    No heat & humidity
  • 8 mm monthly rainfall in August in Johannesburg8
    8 mm of monthly rainfall
  • UV (maximum) index 7 (High) in August in Johannesburg7
    7 (High) UV index

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The August weather guide for South Africa (Johannesburg) 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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How hot is it in Johannesburg in August?

Daytime temperatures usually reach 20°C in Johannesburg in August, falling to 5°C at night.

How sunny is it in Johannesburg in August?

There are normally 10 hours of bright sunshine each day in Johannesburg in August - that's 86% of daylight hours.

Does it ever rain in Johannesburg in August?

There are usually 2 days with some rain in Johannesburg in August and the average monthly rainfall is 8mm.

Johannesburg August sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Friday, 1st August 2025 06:47 17:42
Saturday, 16th August 2025 06:36 17:49
Sunday, 31st August 2025 06:21 17:55

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