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
| 14 June 2026 Sun 9.2 ° C ( 48.6°F )  Clear |
Feels Like : 7.5 ° C / 45.6°F Humidity : % 93 Pressure : 1029 mb Wind Speed : 10.8 kmph / 6.7 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 |
|---|---|---|---|---|---|---|---|
| 14 June 2026 Sun | Sunny |
9.6 ° C | 19 ° C | 14.2 ° C | % 60 | 18 km/h | 4% |
| 15 June 2026 Mon |  Smoky haze |
10.6 ° C | 19.4 ° C | 14.7 ° C | % 50 | 9.4 km/h | 2% |
| 16 June 2026 Tue | Sunny |
10.7 ° C | 18.8 ° C | 14.6 ° C | % 46 | 15.1 km/h | 2% |
| 17 June 2026 Wed | Sunny |
9.8 ° C | 19 ° C | 14.1 ° C | % 55 | 15.5 km/h | 3% |
| 18 June 2026 Thu | Sunny |
9.8 ° C | 17.7 ° C | 13.5 ° C | % 57 | 11.9 km/h | 3% |
| 19 June 2026 Fri | Sunny |
10.1 ° C | 19 ° C | 13.9 ° C | % 57 | 16.9 km/h | 3% |
| 20 June 2026 Sat |  Partly Cloudy |
9.7 ° C | 16.4 ° C | 12.7 ° C | % 62 | 19.8 km/h | 8% |
| 21 June 2026 Sun |  Patchy rain nearby |
9.6 ° C | 14.7 ° C | 11.9 ° C | % 74 | 17.3 km/h | 52% |
| 22 June 2026 Mon | Patchy rain nearby |
10 ° C | 16.4 ° C | 13.2 ° C | % 65 | 8.3 km/h | 38% |
| 23 June 2026 Tue | Patchy rain nearby |
11.3 ° C | 16.5 ° C | 13.7 ° C | % 61 | 7.9 km/h | 57% |
| 24 June 2026 Wed | Sunny |
11 ° C | 17.9 ° C | 14.3 ° C | % 54 | 6.8 km/h | 3% |
| 25 June 2026 Thu | Sunny |
12.3 ° C | 19.6 ° C | 15.6 ° C | % 41 | 5 km/h | 1% |
| 26 June 2026 Fri | Sunny |
12.7 ° C | 19.5 ° C | 15.7 ° C | % 35 | 15.5 km/h | 1% |
| 27 June 2026 Sat | Sunny |
6.8 ° C | 17 ° C | 12.5 ° C | % 44 | 27.4 km/h | 2% |
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