Johannesburg Weather
Johannesburg weather today, the 14-day forecast, and average temperature, rain and what to wear for every month — compared against Hong Kong. Best months to visit: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov and Dec.
Johannesburg current weather
Johannesburg now (local time 11:15)
18°C
Overcast
- Feels like
- 17°
- Humidity
- 53%
- Wind
- 10 km/h
Next 7 days · what to wear
10° – 27°C
Rain likely on 1 of 7 days
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
Johannesburg 14-day forecast
Today
10/4
🌦️
19°
10°
💧35%
Mon
10/5
🌦️
19°
11°
💧14%
Tue
10/6
🌦️
21°
11°
💧75%
Wed
10/7
☁️
24°
13°
💧11%
Thu
10/8
☁️
24°
13°
💧20%
Fri
10/9
☁️
26°
15°
💧12%
Sat
10/10
🌤️
27°
18°
💧43%
Sun
10/11
🌤️
27°
15°
💧25%
Mon
10/12
☀️
27°
15°
💧12%
Tue
10/13
⛅
27°
16°
💧4%
Wed
10/14
⛅
27°
16°
💧6%
Thu
10/15
☀️
28°
19°
💧18%
Fri
10/16
⛅
29°
19°
💧20%
Sat
10/17
🌦️
31°
20°
💧22%
Best time to visit Johannesburg
On temperature and rainfall, the most comfortable months in Johannesburg are Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov and Dec. The hottest month is January (average high 27°C) and the coldest is June (average low 1°C).
Johannesburg climate by month
| Month | Avg high | Avg low | Rain | Humidity | vs Hong Kong |
|---|---|---|---|---|---|
| JanBest | 27°C | 14°C | 122 mm | 65% | +4°C |
| FebBest | 27°C | 13°C | 82 mm | 64% | +2°C |
| MarBest | 25°C | 12°C | 73 mm | 63% | -1°C |
| AprBest | 22°C | 8°C | 43 mm | 62% | -8°C |
| MayBest | 20°C | 4°C | 16 mm | 54% | -15°C |
| JunBest | 16°C | 1°C | 7 mm | 55% | -20°C |
| JulBest | 17°C | 1°C | 3 mm | 49% | -21°C |
| AugBest | 20°C | 3°C | 7 mm | 44% | -17°C |
| SepBest | 25°C | 7°C | 16 mm | 39% | -12°C |
| OctBest | 27°C | 10°C | 57 mm | 48% | -8°C |
| NovBest | 27°C | 12°C | 89 mm | 57% | -3°C |
| DecBest | 27°C | 13°C | 127 mm | 63% | +2°C |
Data: NASA POWER 2001–2020 climatology (MERRA-2, elevation-corrected); Hong Kong comparison uses HKO 1991–2020 normals.
Johannesburg weather month by month: what to wear
Johannesburg in OctoberBest monthThis month
October in Johannesburg is warm to hot: average highs of 27°C and lows of 10°C, around 57 mm of rain (mostly dry) and 48% humidity — about 8°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
Johannesburg in NovemberBest month
November in Johannesburg is warm to hot: average highs of 27°C and lows of 12°C, around 89 mm of rain (some rain) and 57% humidity — about 3°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
Johannesburg in DecemberBest month
December in Johannesburg is warm to hot: average highs of 27°C and lows of 13°C, around 127 mm of rain (some rain) and 63% humidity — about 2°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
Johannesburg in JanuaryBest month
January in Johannesburg is warm to hot: average highs of 27°C and lows of 14°C, around 122 mm of rain (some rain) and 65% humidity — about 4°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
Johannesburg in FebruaryBest month
February in Johannesburg is warm to hot: average highs of 27°C and lows of 13°C, around 82 mm of rain (some rain) and 64% humidity — about 2°C warmer than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
Johannesburg in MarchBest month
March in Johannesburg is pleasantly warm: average highs of 25°C and lows of 12°C, around 73 mm of rain (mostly dry) and 63% humidity — about the same as Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
Johannesburg in AprilBest month
April in Johannesburg is pleasantly warm: average highs of 22°C and lows of 8°C, around 43 mm of rain (mostly dry) and 62% humidity — about 8°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
Johannesburg in MayBest month
May in Johannesburg is mild and cool: average highs of 20°C and lows of 4°C, around 16 mm of rain (dry) and 54% humidity — about 15°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Johannesburg in JuneBest month
June in Johannesburg is mild and cool: average highs of 16°C and lows of 1°C, around 7 mm of rain (dry) and 55% humidity — about 20°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Johannesburg in JulyBest month
July in Johannesburg is mild and cool: average highs of 17°C and lows of 1°C, around 3 mm of rain (dry) and 49% humidity — about 21°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Long sleeves with a light jacket or sweater; big day–night swing, so dress in layers.
Johannesburg in AugustBest month
August in Johannesburg is mild and cool: average highs of 20°C and lows of 3°C, around 7 mm of rain (dry) and 44% humidity — about 17°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
Johannesburg in SeptemberBest month
September in Johannesburg is pleasantly warm: average highs of 25°C and lows of 7°C, around 16 mm of rain (dry) and 39% humidity — about 12°C colder than Hong Kong. It's one of the most comfortable months of the year to visit.
👕 Short sleeves with a light long-sleeve or jacket for cool mornings and evenings; big day–night swing, so dress in layers.
FAQ
›What is the best time to visit Johannesburg?
On temperature and rainfall, the most comfortable months in Johannesburg are Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov and Dec. The hottest month is January (average high 27°C) and the coldest is June (average low 1°C).
›What's the weather like in Johannesburg in October, and what should I wear?
October in Johannesburg is warm to hot: average highs of 27°C and lows of 10°C, around 57 mm of rain (mostly dry) and 48% humidity — about 8°C colder than Hong Kong. It's one of the most comfortable months of the year to visit. What to wear: Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
›What's the weather like in Johannesburg in November, and what should I wear?
November in Johannesburg is warm to hot: average highs of 27°C and lows of 12°C, around 89 mm of rain (some rain) and 57% humidity — about 3°C colder than Hong Kong. It's one of the most comfortable months of the year to visit. What to wear: Short sleeves, plus a light layer for air-conditioned interiors; big day–night swing, so dress in layers.
›When is the rainy season in Johannesburg?
Johannesburg is wettest in December, with about 127 mm on average, and driest in July, with about 3 mm.
›How cold does Johannesburg get? Does it snow?
The coldest month is June, averaging 16°C by day and 1°C at night. Early mornings get close to freezing; snow is occasional.
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Forecast data: Open-Meteo.com (CC BY 4.0), refreshed every 3 hours. Hottest month: January; coldest: June.