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
| 13 September 2026 Sun 15.9 ° C ( 60.7°F )  Clear |
Feels Like : 13.4 ° C / 56.1°F Humidity : % 44 Pressure : 1020 mb Wind Speed : 6.1 kmph / 3.8 miles from NNE 
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 |
|---|---|---|---|---|---|---|---|
| 13 September 2026 Sun | Sunny |
15.9 ° C | 25.1 ° C | 20.9 ° C | % 29 | 11.2 km/h | 0% |
| 14 September 2026 Mon | Sunny |
15.6 ° C | 24.5 ° C | 19.7 ° C | % 40 | 25.9 km/h | 17% |
| 15 September 2026 Tue |  Patchy rain nearby |
13.2 ° C | 23.8 ° C | 18.7 ° C | % 45 | 25.6 km/h | 62% |
| 16 September 2026 Wed | Sunny |
15 ° C | 26.7 ° C | 21 ° C | % 31 | 20.5 km/h | 1% |
| 17 September 2026 Thu | Sunny |
16 ° C | 28.6 ° C | 21.8 ° C | % 44 | 25.2 km/h | 17% |
| 18 September 2026 Fri | Patchy rain nearby |
13.2 ° C | 18.1 ° C | 15.5 ° C | % 72 | 25.9 km/h | 74% |
| 19 September 2026 Sat |  Light rain shower |
8.2 ° C | 12.5 ° C | 9.6 ° C | % 85 | 28.8 km/h | 90% |
| 20 September 2026 Sun |  Overcast |
9.5 ° C | 13.3 ° C | 11.2 ° C | % 82 | 24.8 km/h | 88% |
| 21 September 2026 Mon | Overcast |
10.1 ° C | 19.9 ° C | 14.9 ° C | % 65 | 18 km/h | 11% |
| 22 September 2026 Tue | Overcast |
13.9 ° C | 21.6 ° C | 17.8 ° C | % 55 | 13.3 km/h | 43% |
| 23 September 2026 Wed | Patchy rain nearby |
15.5 ° C | 22.5 ° C | 18.9 ° C | % 54 | 14.4 km/h | 58% |
| 24 September 2026 Thu | Sunny |
16 ° C | 23.5 ° C | 19.6 ° C | % 42 | 17.6 km/h | 3% |
| 25 September 2026 Fri | Overcast |
14.8 ° C | 21.8 ° C | 18.7 ° C | % 49 | 18.7 km/h | 43% |
| 26 September 2026 Sat | Overcast |
14.1 ° C | 21 ° C | 17.8 ° C | % 41 | 28.4 km/h | 57% |
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