WanderWhen

Johannesburg weather in August

August is one of the best months to visit Johannesburg. Expect highs around 21°C, lows near 7°C, and about 0.7 days with rain.

10.0 · Excellenttravel score for August
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg high
21°C
Avg low
7°C
Rainfall
3 mm
Rain days
0.7
Sunshine
10.6 h/day
Daylight
11.1 h

What to pack for Johannesburg in August

  • t-shirts and light layers
  • a light jacket for evenings

Humidity averages 41%; max daily wind around 20 km/h.

How August compares

January: 8.4/10 JFebruary: 8.6/10 FMarch: 9.8/10 MApril: 9.8/10 AMay: 10.0/10 MJune: 10.0/10 JJuly: 10.0/10 JAugust: 10.0/10 ASeptember: 10.0/10 SOctober: 10.0/10 ONovember: 8.8/10 NDecember: 7.8/10 D

Best months in Johannesburg: March–October. See the full best time to visit Johannesburg guide.

Johannesburg in August: the details

In August, Johannesburg sees average daytime highs of 21°C (69°F) and overnight lows of 7°C (44°F). Rainfall totals roughly 3 mm across 0.7 rainy days, and the sun shines about 10.6 hours per day with 11.1 hours of daylight mid-month. Relative humidity averages 41%.

These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Johannesburg, South Africa (-26.2, 28.04) — see our methodology. Actual conditions vary year to year.

Where should you go next month?

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