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Johannesburg — Hourly Forecast

Hour-by-hour breakdown for the next 48 hours · South Africa

17°Cnow
Temperature
Rain chance
Wind speed
Current hour

Today

Apr 19
21°14°78%
7 PM17°30%10 km/h
8 PM16°20%10 km/h
9 PM16°30%9 km/h
10 PM☁️16°33%10 km/h
11 PM🌦️16°25%9 km/h

Tomorrow

Apr 20
22°15°48%
12a
6a
12p
6p
12 AM15°18%9 km/h
1 AM☁️15°8%10 km/h
2 AM15°3%12 km/h
3 AM☁️15°8%11 km/h
4 AM☁️15°33%9 km/h
5 AM🌦️15°48%9 km/h
6 AM15°35%8 km/h
7 AM☁️15°18%6 km/h
8 AM☁️16°20%9 km/h
9 AM17°33%11 km/h
10 AM☁️18°25%15 km/h
11 AM19°40%14 km/h
12 PM21°35%16 km/h
1 PM22°38%17 km/h
2 PM22°43%15 km/h
3 PM21°35%14 km/h
4 PM21°30%13 km/h
5 PM19°33%11 km/h
6 PM18°23%8 km/h
7 PM🌙17°15%6 km/h
8 PM🌙17°5%5 km/h
9 PM🌙16°5%5 km/h
10 PM🌙16°4 km/h
11 PM15°5 km/h

Tuesday, April 21

Apr 21
23°15°70%
12a
6a
12p
6p
12 AM15°6 km/h
1 AM16°7 km/h
2 AM16°7 km/h
3 AM16°7 km/h
4 AM☁️16°7 km/h
5 AM☁️15°7 km/h
6 AM☁️15°3%7 km/h
7 AM15°5%7 km/h
8 AM16°5%10 km/h
9 AM🌤️18°3%13 km/h
10 AM🌤️20°8%14 km/h
11 AM21°13%14 km/h
12 PM☁️22°18%16 km/h
1 PM☁️22°35%16 km/h
2 PM☁️23°35%17 km/h
3 PM☁️23°42%17 km/h
4 PM☁️22°49%16 km/h
5 PM☁️21°55%14 km/h
6 PM☁️19°62%10 km/h

About this hourly forecast

This hourly weather forecast for Johannesburg, South Africa covers the next 48 hours with readings updated every 30 minutes. Data is sourced from Open-Meteo's high-resolution weather model, combining data from ECMWF, GFS and regional NWP models. Temperature values are measured at 2 metres above ground level.

Rain probability represents the likelihood of measurable precipitation in each hour. Wind speeds are 10-metre reference values. UV index values above 3 indicate moderate sun exposure risk; above 6 is high risk and sun protection is recommended.