Yearly weather and climate in Johannesburg, South Africa
The yearly weather in Johannesburg runs from around 4°C in July to 26°C in October. July is the driest month at 0 rainy days; December the wettest at 18. Here is the annual climate data, so you know what you are packing for.
Best time to visit
The best weather is typically in Mar, Apr, Sep, Oct, with mild temperatures and lower rainfall.
Sunshine
Expect up to 11.3 hours of clear skies in Jan, but only 9.8 hours in Jun. Pack sunglasses and SPF accordingly.
Rainfall
It rains the most in Dec (127mm over 18 days). A reliable rain jacket is a must-have if visiting then.
Day-to-night swings
Temperatures typically drop by 12°C from day to night. Make sure to pack layers for the evenings.
Average temperatures and rainfall
Daily highs and lows in Johannesburg, averaged over 10 years of recorded weather, with the number of days it typically rains.
- 2577°1458°15Jan
- 2577°1458°14Feb
- 2475°1355°8Mar
- 2171°1050°7Apr
- 2067°745°3May
- 1762°439°2Jun
- 1763°438°0Jul
- 2069°643°1Aug
- 2576°1050°3Sep
- 2678°1254°7Oct
- 2678°1456°13Nov
- 2577°1558°18Dec
Bars span the average daily low to high. Numbers under the drop are rainy days per month (1mm or more) — hover a month for its total rainfall. Jul is typically driest at 0 days (1mm); Dec the wettest at 18 days (127mm).
| Month | Average high | Average low | Rainy days | Total rainfall |
|---|---|---|---|---|
| Jan | 25°C | 14°C | 15 | 114mm |
| Feb | 25°C | 14°C | 14 | 109mm |
| Mar | 24°C | 13°C | 8 | 42mm |
| Apr | 21°C | 10°C | 7 | 73mm |
| May | 20°C | 7°C | 3 | 17mm |
| Jun | 17°C | 4°C | 2 | 13mm |
| Jul | 17°C | 4°C | 0 | 1mm |
| Aug | 20°C | 6°C | 1 | 3mm |
| Sep | 25°C | 10°C | 3 | 13mm |
| Oct | 26°C | 12°C | 7 | 45mm |
| Nov | 26°C | 14°C | 13 | 87mm |
| Dec | 25°C | 15°C | 18 | 127mm |
Weather data by Open-Meteo.com
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