Johannesburg-Grand Central Airport (GCJ) 15 Day Weather Forecast, Johannesburg South Africa
Current weather conditions and 15 day weather forecast for Johannesburg-Grand Central Airport in Johannesburg, South Africa including weather daily high/low temperature, warnings, chance of precipitation, pressure, humidity/wind chill, rain, wind speed, cloud, pressure, and UV index.
Current weather conditions at GCJ
| 03 August 2026 Mon 19.2 ° C ( 66.6°F )  Sunny |
Feels Like : 14.9 ° C / 58.8°F Humidity : % 12 Pressure : 1019 mb Wind Speed : 6.5 kmph / 4 miles from SW 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 0 |
15-day weather forecast for Johannesburg-Grand Central Airport, Johannesburg, South Africa
| Date | Weather forecast | Low temperature | High temperature | Average Temperature | Humidity | Wind | Chance of rain |
|---|---|---|---|---|---|---|---|
| 03 August 2026 Mon | Sunny |
10.4 ° C | 19.2 ° C | 14.6 ° C | % 21 | 6.8 km/h | 0% |
| 04 August 2026 Tue | Sunny |
10.7 ° C | 19.9 ° C | 15.2 ° C | % 16 | 10.1 km/h | 0% |
| 05 August 2026 Wed | Sunny |
11.5 ° C | 20.7 ° C | 15.8 ° C | % 18 | 10.8 km/h | 0% |
| 06 August 2026 Thu |  Smoky haze |
12.6 ° C | 22.4 ° C | 17.3 ° C | % 17 | 6.1 km/h | 0% |
| 07 August 2026 Fri | Smoky haze |
12.4 ° C | 22.1 ° C | 17.1 ° C | % 20 | 16.9 km/h | 0% |
| 08 August 2026 Sat | Sunny |
11.4 ° C | 20.9 ° C | 16 ° C | % 39 | 14.8 km/h | 1% |
| 09 August 2026 Sun | Sunny |
12.7 ° C | 22 ° C | 17.2 ° C | % 28 | 15.5 km/h | 0% |
| 10 August 2026 Mon | Sunny |
13.7 ° C | 22.3 ° C | 18 ° C | % 22 | 27.7 km/h | 1% |
| 11 August 2026 Tue | Sunny |
9.8 ° C | 17.5 ° C | 13 ° C | % 28 | 20.5 km/h | 3% |
| 12 August 2026 Wed |  Patchy rain nearby |
4.2 ° C | 10.7 ° C | 8.2 ° C | % 31 | 23 km/h | 57% |
| 13 August 2026 Thu | Sunny |
1.6 ° C | 8.9 ° C | 5.4 ° C | % 41 | 24.8 km/h | 1% |
| 14 August 2026 Fri | Sunny |
3.6 ° C | 13.7 ° C | 8.3 ° C | % 45 | 19.8 km/h | 2% |
| 15 August 2026 Sat | Sunny |
6.9 ° C | 19.3 ° C | 13 ° C | % 49 | 18.7 km/h | 2% |
| 16 August 2026 Sun | Sunny |
11 ° C | 21.5 ° C | 16 ° C | % 33 | 10.8 km/h | 1% |
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