Weather in Johannesburg in July 2025
Average weather
Average temperature in Johannesburg in July
Going from a maximum of +22°C during the day to a minimum of -3°C during the night, the temperature in July averages around +17°C.
The average maximum temperature goes down 20% by the end of the month, compared with the beginning of the month, from +18°C to +13°C.
Is Johannesburg warm or cold in July?
Johannesburg is typically mild in July.
Maximum temperatures go up compared to the previous month from +17°C to +17°C. The minimum temperature also goes up from +3°C to +3°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
July is one of the coolest months in Johannesburg, here is the comparison with other months:
Climate in Johannesburg in July
| June | July | August | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +17°C | +17°C | +20°C | ||||
| Min. temperature | ||||||
| -5°C | -5°C | -5°C | ||||
| Max. temperature | ||||||
| +25°C | +25°C | +28°C | ||||
| Rainfall | ||||||
| 10 mm | 5 mm | 12 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 2 m/s | ||||
| Humidity | ||||||
| 59% | 55% | 51% | ||||
| Air pressure | ||||||
| 1023 HPa | 1024 HPa | 1022 HPa | ||||
| Sunny days | ||||||
| 22 | 24 | 22 | ||||
| Cloudy days | ||||||
| 5 | 4 | 5 | ||||
| Rainy days | ||||||
| 3 | 2 | 4 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
July weather is still as great as in June. The temperature levels stay the same in the area of +17°C for average maximum temperature during the day. As July arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 10 mm to 5 mm. It feels drier, as humidity decreases from 59% to 55%. The average wind speed doesn’t change much during July, staying around 1 m/s. The good news is there are likely to be more sunny days in July, from 22 to 24.
August brings much the same weather, it remains great.
Wind
The average wind speed is 1 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Johannesburg is gradually increasing during July, going from 0 m/s to 2 m/s over the course of the month.
Rain
How was the weather last July in Johannesburg?
Climate Change over Years
The climate in Johannesburg in July has not changed much over the last 43 years.
The average temperature was the lowest in 2000 (+20°C) and the highest in 2015 (+25°C). The driest year was 2015 with only 464 mm of rainfall, and the wettest year was 2022 with 1539 mm.
FAQ
Is July a good time to visit Johannesburg?
Can you sunbathe in Johannesburg in July?
Is Johannesburg rainy in July?
Is it sunny in Johannesburg in July?
Other cities in South Africa
Monthly weather in Johannesburg
Source of the data
For this page, we’ve looked at the typical weather in Johannesburg, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.