WEATHER: Cape Town swelters on Wednesday, showers possible in Gauteng

Cape Town is set for extreme heat on Wednesday, with temperatures climbing to 37°C, according to AccuWeather.

The day will be scorching hot with hazy sunshine, and caution is advised for anyone spending extended periods outdoors.

The UV index reaches 8 (very high), while skies remain mostly clear with just 3% cloud cover. Winds will blow NNW at 11 km/h, with gusts up to 30 km/h.

No rain is expected.

Cape Town will remain warm overnight with a low of 22°C.

Conditions will be clear and warm, with southerly winds at 9 km/h and gusts reaching 20 km/h.

Johannesburg is forecast to reach a high of 24°C, with clouds and sunshine and a shower possible in places during the afternoon.

The UV index will climb to 10 (very high).

Winds will blow from the east at 11 km/h, with gusts up to 32 km/h.

There is a 55% chance of precipitation, with around 0.3 mm of rain expected and about half an hour of rainfall possible. Cloud cover will sit around 56%.

Johannesburg will cool to 13°C overnight.

The night will be partly cloudy, with a shower possible in places later. Winds will shift to ENE at 9 km/h, with gusts up to 28 km/h.

Rainfall could reach 0.4 mm, with the chance of precipitation remaining at 55% and a 16% chance of thunderstorms.

Pretoria will see mostly cloudy skies on Wednesday, with a high of 26°C.

The UV index will be very high at 10, while easterly winds at 13 km/h may gust up to 35 km/h.

No measurable rainfall is currently expected.

Temperatures will drop to 15°C overnight.

Conditions will remain partly cloudy, with easterly winds at 11 km/h and gusts up to 33 km/h.

The chance of precipitation is 25%, with cloud cover expected around 39%.