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 April 2026 Wed 23.2 ° C ( 73.8°F )  Patchy rain nearby |
Feels Like : 25.1 ° C / 77.2°F Humidity : % 41 Pressure : 1025 mb Wind Speed : 18.4 kmph / 11.4 miles from NW 
Visibility : 9 km Precipitation (rainfall) : 1.02 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 |
|---|---|---|---|---|---|---|---|
| 29 April 2026 Wed |  Moderate rain |
14.3 ° C | 21.3 ° C | 16.7 ° C | % 54 | 20.5 km/h | 85% |
| 30 April 2026 Thu | Patchy rain nearby |
11.8 ° C | 18.8 ° C | 14.5 ° C | % 81 | 23 km/h | 87% |
| 01 May 2026 Fri | Moderate rain |
13.1 ° C | 17.4 ° C | 15 ° C | % 85 | 17.3 km/h | 83% |
| 02 May 2026 Sat |  Sunny |
13.6 ° C | 23.1 ° C | 18.1 ° C | % 61 | 17.3 km/h | 0% |
| 03 May 2026 Sun | Sunny |
15.5 ° C | 24.7 ° C | 20 ° C | % 49 | 17.3 km/h | 0% |
| 04 May 2026 Mon | Sunny |
19.4 ° C | 25.1 ° C | 21.5 ° C | % 46 | 15.8 km/h | 0% |
| 05 May 2026 Tue | Moderate rain |
15.1 ° C | 23.2 ° C | 19.4 ° C | % 57 | 21.6 km/h | 86% |
| 06 May 2026 Wed |  Heavy rain |
13.9 ° C | 15.9 ° C | 14.8 ° C | % 92 | 24.5 km/h | 86% |
| 07 May 2026 Thu | Sunny |
10.9 ° C | 16.9 ° C | 13.2 ° C | % 51 | 19.8 km/h | 0% |
| 08 May 2026 Fri | Sunny |
8.5 ° C | 18.5 ° C | 13.4 ° C | % 50 | 15.5 km/h | 0% |
| 09 May 2026 Sat | Patchy rain nearby |
11.6 ° C | 21.2 ° C | 16 ° C | % 47 | 11.9 km/h | 79% |
| 10 May 2026 Sun | Moderate rain |
12.4 ° C | 15.7 ° C | 13.8 ° C | % 86 | 20.9 km/h | 89% |
| 11 May 2026 Mon | Moderate rain |
13.1 ° C | 15.7 ° C | 14 ° C | % 89 | 11.2 km/h | 71% |
| 12 May 2026 Tue | Patchy rain nearby |
11.9 ° C | 18.7 ° C | 15 ° C | % 69 | 10.1 km/h | 80% |
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