Johannesburg weather

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The weather guide for Johannesburg, South Africa shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

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Which is the hottest month in Johannesburg?

The hottest time of year in Johannesburg is normally January. Expect maximum daytime temperatures to reach 26°C with low heat and humidity.

Which month has the most rain in Johannesburg?

In terms of rainfall, January is usually the wettest month in Johannesburg with 135mm on average. There are normally 14 days in January with some rain.

When is it sunniest in Johannesburg?

The sunniest time of year in Johannesburg is normally July with bright sunshine on average for 87% of daylight hours; that's 9 hours of sunshine per day.

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

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Compare Johannesburg weather with the USA

Below the Johannesburg weather chart shows average maximum daytime temperature for Johannesburg, South Africa and the USA (Washington).

Maximum daytime temperature (°C)

Johannesburg, South Africa
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
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Sep
Oct
Nov
Dec

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

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Where's hot in South Africa right now?

Below are the temperatures expected today at popular destinations in South Africa. Select a destination to compare today's forecast with average weather conditions.

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