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 May 2026 Thu 20.3 ° C ( 68.5°F )  Clear |
Feels Like : 20.3 ° C / 68.5°F Humidity : % 37 Pressure : 1026 mb Wind Speed : 7.6 kmph / 4.7 miles from NW 
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 May 2026 Thu | Sunny |
11.4 ° C | 20.7 ° C | 15.8 ° C | % 47 | 10.8 km/h | 0% |
| 15 May 2026 Fri | Sunny |
12 ° C | 20.8 ° C | 16.3 ° C | % 52 | 11.5 km/h | 0% |
| 16 May 2026 Sat | Sunny |
13.2 ° C | 21.5 ° C | 17.2 ° C | % 41 | 10.8 km/h | 0% |
| 17 May 2026 Sun |  Patchy rain nearby |
11.9 ° C | 20 ° C | 16 ° C | % 60 | 13 km/h | 86% |
| 18 May 2026 Mon | Sunny |
14.2 ° C | 20.7 ° C | 17.2 ° C | % 46 | 13.7 km/h | 0% |
| 19 May 2026 Tue | Patchy rain nearby |
14.2 ° C | 18.3 ° C | 15.5 ° C | % 53 | 13.3 km/h | 88% |
| 20 May 2026 Wed | Sunny |
13.6 ° C | 21 ° C | 17 ° C | % 44 | 13.3 km/h | 0% |
| 21 May 2026 Thu | Sunny |
15.2 ° C | 21.3 ° C | 17.8 ° C | % 40 | 10.4 km/h | 0% |
| 22 May 2026 Fri | Sunny |
13.9 ° C | 20.7 ° C | 16.9 ° C | % 46 | 9.7 km/h | 0% |
| 23 May 2026 Sat | Sunny |
13.9 ° C | 21.4 ° C | 17.3 ° C | % 48 | 5.8 km/h | 0% |
| 24 May 2026 Sun |  Partly Cloudy |
12.4 ° C | 20.1 ° C | 16.3 ° C | % 60 | 9.7 km/h | 0% |
| 25 May 2026 Mon | Patchy rain nearby |
14.4 ° C | 19.8 ° C | 17 ° C | % 53 | 6.5 km/h | 76% |
| 26 May 2026 Tue | Sunny |
14.3 ° C | 20.7 ° C | 17 ° C | % 35 | 8.3 km/h | 0% |
| 27 May 2026 Wed | Sunny |
14.4 ° C | 21 ° C | 17.3 ° C | % 34 | 9 km/h | 0% |
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