Johannesburg Climate by Month
Johannesburg, Gauteng, South Africa
Warm summers and cool winters, with most rain from November to March.
The climate in Johannesburg is one of warm summers and cool winters, with most rain from November to March. January is the warmest month, with highs around 78°F (26°C); July is the coolest at 63°F (17°C), and nights dip to 36°F (2°C). Of the 28 in (721 mm) of rain in a typical year, 77% falls from November to March. June to August are almost completely dry.
- Warmest month
- 78°F(26°C)
- Average high, January
- Coldest nights
- 36°F(2°C)
- Average low, July
- Rain per year
- 28 in(721 mm)
- Wettest: January
- Humidity
- 53%
- Sunniest: November
Best and worst months in Johannesburg
Best for weatherSeptember is the best time for weather in Johannesburg: highs near 74°F (24°C) and about 0.7 in (19 mm) of rain a month.
Least pleasantJanuary and July are the least pleasant; January is the wettest, with 5.1 in (130 mm) of rain.
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in September.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Johannesburg weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 78°F(26°C) | 58°F(15°C) | 5.1 in(130 mm) | 64% | 6.4 |
| FebFebruary | 78°F(26°C) | 57°F(14°C) | 3.9 in(100 mm) | 65% | 6.1 |
| MarMarch | 76°F(24°C) | 54°F(12°C) | 3.8 in(96 mm) | 61% | 5.4 |
| AprApril | 72°F(22°C) | 48°F(9°C) | 2.0 in(50 mm) | 62% | 4.8 |
| MayMay | 68°F(20°C) | 41°F(5°C) | 0.6 in(14 mm) | 48% | 4.3 |
| JunJune | 64°F(18°C) | 36°F(2°C) | 0.3 in(8 mm) | 49% | 3.9 |
| JulJuly | 63°F(17°C) | 36°F(2°C) | 0.1 in(3 mm) | 42% | 4.2 |
| AugAugust | 68°F(20°C) | 40°F(5°C) | 0.2 in(6 mm) | 35% | 5.0 |
| SepSeptemberBest | 74°F(24°C) | 47°F(9°C) | 0.7 in(19 mm) | 38% | 5.9 |
| OctOctober | 76°F(25°C) | 52°F(11°C) | 2.6 in(65 mm) | 48% | 6.5 |
| NovNovember | 76°F(25°C) | 55°F(13°C) | 4.0 in(101 mm) | 56% | 6.8 |
| DecDecember | 78°F(25°C) | 57°F(14°C) | 5.1 in(129 mm) | 66% | 6.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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