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
| 11 January 2026 Sun 20.1 ° C ( 68.2°F )  Partly Cloudy |
Feels Like : 20.1 ° C / 68.2°F Humidity : % 83 Pressure : 1022 mb Wind Speed : 13 kmph / 8.1 miles from E 
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 |
|---|---|---|---|---|---|---|---|
| 11 January 2026 Sun |  Patchy rain nearby |
16.2 ° C | 30.1 ° C | 22.5 ° C | % 55 | 19.4 km/h | 88% |
| 12 January 2026 Mon |  Sunny |
15.9 ° C | 31.5 ° C | 22.7 ° C | % 55 | 21.2 km/h | 0% |
| 13 January 2026 Tue | Patchy rain nearby |
17.3 ° C | 33.3 ° C | 24.7 ° C | % 48 | 20.2 km/h | 87% |
| 14 January 2026 Wed |  Moderate rain |
18.5 ° C | 32.1 ° C | 22.9 ° C | % 61 | 28.4 km/h | 88% |
| 15 January 2026 Thu | Sunny |
17.7 ° C | 32.5 ° C | 23.5 ° C | % 57 | 20.5 km/h | 0% |
| 16 January 2026 Fri | Patchy rain nearby |
17 ° C | 28.9 ° C | 21.4 ° C | % 65 | 25.2 km/h | 82% |
| 17 January 2026 Sat | Partly Cloudy |
16.1 ° C | 29.1 ° C | 22.5 ° C | % 58 | 11.2 km/h | 0% |
| 18 January 2026 Sun | Moderate rain |
18.3 ° C | 30.8 ° C | 23.1 ° C | % 53 | 15.8 km/h | 88% |
| 19 January 2026 Mon | Patchy rain nearby |
15 ° C | 19.6 ° C | 17 ° C | % 83 | 20.5 km/h | 73% |
| 20 January 2026 Tue | Patchy rain nearby |
13.9 ° C | 24.4 ° C | 18.9 ° C | % 70 | 14.4 km/h | 75% |
| 21 January 2026 Wed | Patchy rain nearby |
17 ° C | 29 ° C | 22.8 ° C | % 54 | 12.2 km/h | 79% |
| 22 January 2026 Thu | Patchy rain nearby |
17.4 ° C | 26.8 ° C | 21 ° C | % 65 | 20.2 km/h | 88% |
| 23 January 2026 Fri | Patchy rain nearby |
16.4 ° C | 28 ° C | 22 ° C | % 57 | 17.3 km/h | 82% |
| 24 January 2026 Sat | Sunny |
17.6 ° C | 31.1 ° C | 23.8 ° C | % 47 | 11.9 km/h | 0% |
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