Johannesburg, South Africa: Annual Weather Averages
January is the hottest month in Johannesburg with an average temperature of 69°F (21°C) and the coldest is June at 50°F (10°C) with the most daily sunshine hours at 11 in December. The wettest month is January with an average of 130mm of rain.
Average Temperature: Johannesburg
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 21 | 20 | 19 | 16 | 14 | 10 | 11 | 14 | 16 | 18 | 19 | 20 |
| °F | 70 | 68 | 66 | 61 | 57 | 50 | 52 | 57 | 61 | 64 | 66 | 68 |
Average High/Low Temperature: Johannesburg
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °C | 26 | 25 | 24 | 22 | 20 | 16 | 17 | 20 | 22 | 24 | 25 | 25 |
| High °F | 79 | 77 | 75 | 72 | 68 | 61 | 63 | 68 | 72 | 75 | 77 | 77 |
| Low °C | 15 | 14 | 13 | 10 | 8 | 4 | 4 | 7 | 9 | 11 | 13 | 14 |
| Low °F | 59 | 57 | 55 | 50 | 46 | 39 | 39 | 45 | 48 | 52 | 55 | 57 |
Average Rainfall: Johannesburg
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | 130 | 110 | 100 | 40 | 10 | 20 | 10 | 10 | 40 | 80 | 120 | 110 |
| Days | 15 | 13 | 12 | 8 | 3 | 2 | 1 | 2 | 4 | 12 | 15 | 17 |
Average Daily Sunshine Hours: Johannesburg
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| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hours | 9 | 10 | 9 | 9 | 9 | 9 | 9 | 11 | 11 | 10 | 11 | 11 |