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 December 2025 Sun
18.3 ° C
( 64.9°F )

Patchy rain nearby
Patchy rain nearby
Feels Like : 18.3 ° C / 64.9°F
Humidity : % 88
Pressure : 1025 mb
Wind Speed : 10.1 kmph / 6.3 miles from NENE
Visibility : 10 km
Precipitation (rainfall) : 0.04 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 December 2025 Sun Patchy rain nearby Patchy rain nearby 15.3 ° C 21 ° C 17.5 ° C % 81 18.4 km/h 98%
15 December 2025 Mon Sunny Sunny 15.2 ° C 26.2 ° C 21 ° C % 62 11.5 km/h 0%
16 December 2025 Tue Sunny Sunny 17.4 ° C 27.9 ° C 22.8 ° C % 52 11.9 km/h 0%
17 December 2025 Wed Moderate rain Moderate rain 18 ° C 29.3 ° C 23.3 ° C % 50 21.6 km/h 69%
18 December 2025 Thu Patchy rain nearby Patchy rain nearby 16.2 ° C 27 ° C 20.1 ° C % 71 12.2 km/h 87%
19 December 2025 Fri Patchy rain nearby Patchy rain nearby 15 ° C 24.8 ° C 19.4 ° C % 67 18.7 km/h 85%
20 December 2025 Sat Patchy rain nearby Patchy rain nearby 14.7 ° C 23.3 ° C 18.2 ° C % 67 15.1 km/h 79%
21 December 2025 Sun Sunny Sunny 14.8 ° C 25.7 ° C 20.2 ° C % 54 10.4 km/h 0%
22 December 2025 Mon Sunny Sunny 16.3 ° C 28.4 ° C 21.8 ° C % 42 15.8 km/h 0%
23 December 2025 Tue Sunny Sunny 20.2 ° C 30.8 ° C 25.4 ° C % 35 15.8 km/h 0%
24 December 2025 Wed Sunny Sunny 18.2 ° C 27.9 ° C 22.2 ° C % 55 19.8 km/h 0%
25 December 2025 Thu Patchy rain nearby Patchy rain nearby 17.1 ° C 29.7 ° C 20.9 ° C % 67 15.5 km/h 87%
26 December 2025 Fri Patchy rain nearby Patchy rain nearby 16.3 ° C 30 ° C 22.3 ° C % 61 14 km/h 87%
27 December 2025 Sat Patchy rain nearby Patchy rain nearby 17.9 ° C 31.4 ° C 23.1 ° C % 59 40.3 km/h 86%
Weather forecasts are usually fully updated every 3 hours.

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