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
| 29 July 2026 Wed 14.8 ° C ( 58.6°F )  Sunny |
Feels Like : 8 ° C / 46.4°F Humidity : % 48 Pressure : 1025 mb Wind Speed : 14.4 kmph / 8.9 miles from N 
Visibility : 10 km Precipitation (rainfall) : 0 mm Cloud (%) : 10 |
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 |
|---|---|---|---|---|---|---|---|
| 29 July 2026 Wed | Sunny |
8.6 ° C | 17.9 ° C | 13.4 ° C | % 48 | 16.6 km/h | 2% |
| 30 July 2026 Thu | Sunny |
10.3 ° C | 19.5 ° C | 14.4 ° C | % 36 | 18.4 km/h | 1% |
| 31 July 2026 Fri | Sunny |
7.1 ° C | 17.7 ° C | 12.3 ° C | % 44 | 20.9 km/h | 1% |
| 01 August 2026 Sat | Sunny |
6.4 ° C | 17.7 ° C | 12 ° C | % 44 | 20.2 km/h | 1% |
| 02 August 2026 Sun |  Smoky haze |
8.3 ° C | 20.5 ° C | 13.9 ° C | % 40 | 13.3 km/h | 1% |
| 03 August 2026 Mon | Sunny |
10.9 ° C | 19.2 ° C | 14.9 ° C | % 28 | 7.2 km/h | 0% |
| 04 August 2026 Tue | Sunny |
11.2 ° C | 20.3 ° C | 15.5 ° C | % 22 | 10.1 km/h | 0% |
| 05 August 2026 Wed | Sunny |
10.9 ° C | 19.5 ° C | 15.1 ° C | % 25 | 11.9 km/h | 0% |
| 06 August 2026 Thu | Sunny |
12.4 ° C | 21.8 ° C | 16.7 ° C | % 21 | 11.9 km/h | 0% |
| 07 August 2026 Fri | Sunny |
13.8 ° C | 22.6 ° C | 17.7 ° C | % 20 | 17.6 km/h | 0% |
| 08 August 2026 Sat | Sunny |
11.3 ° C | 20.1 ° C | 15.4 ° C | % 44 | 18.7 km/h | 1% |
| 09 August 2026 Sun | Sunny |
10.2 ° C | 18.9 ° C | 14.1 ° C | % 55 | 18 km/h | 3% |
| 10 August 2026 Mon | Sunny |
9.8 ° C | 19.5 ° C | 14.5 ° C | % 38 | 10.4 km/h | 1% |
| 11 August 2026 Tue | Sunny |
11.6 ° C | 22 ° C | 16.5 ° C | % 31 | 19.8 km/h | 1% |
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