Key Takeaways
- Most of South Africa will experience partly cloudy skies with cool to cold temperatures on Wednesday, 17 June 2026.
- Showers and thundershowers are forecast for isolated areas in Mpumalanga, Limpopo, the Northern Cape and KwaZulu‑Natal, mainly along the escarpment and north‑western parts.
- Morning fog patches are likely in several interior regions (Gauteng, Mpumalanga, Limpopo, Free State, Western and Eastern Cape interiors) and may affect early‑morning travel.
- The Lowveld of Mpumalanga and Limpopo, as well as the north‑western Western Cape, will remain comparatively warm despite the overall cool trend.
- Coastal winds will be fresh to strong in the Western Cape and variable to moderate elsewhere; beach‑goers should exercise caution.
- The forecast was issued by the South African Weather Service, shared via Twitter, and assisted by Toqan AI.
Overall National Outlook
The South African Weather Service predicts a predominantly partly cloudy day across the country on Wednesday, with temperatures ranging from cool to cold in the majority of provinces. While the interior will feel brisk, isolated showers and thundershowers are expected in the eastern interior sectors—specifically over parts of Mpumalanga, Limpopo, the Northern Cape and KwaZulu‑Natal. These precipitation events are likely to be scattered rather than widespread, with drizzle possible along the north‑eastern escarpment where moist air meets higher terrain. The forecast emphasizes that most residents should prepare for chilly conditions, especially in the early morning and evening, while keeping an eye on localized rain threats in the named regions.
Gauteng and North West Conditions
In Gauteng, the day will be partly cloudy and cool. Pretoria is expected to see lows around 9 °C climbing to a high of 19 °C, Johannesburg will range from 7 °C to 18 °C, and Vereeniging from 5 °C to 19 °C. The North West mirrors this pattern: Klerksdorp will experience temperatures between 5 °C and 20 °C, Potchefstroom 6 °C– 19 °C, Mahikeng 8 °C– 20 °C, Rustenburg 8 °C– 20 °C, and Vryburg 6 °C– 21 °C. Both provinces are unlikely to see significant rainfall, but morning fog patches may develop, particularly over the eastern parts of Gauteng and the central areas of the North West, potentially reducing visibility for early commuters.
Mpumalanga and Limpopo Details
Mpumalanga will begin with morning fog patches over its eastern sections, followed by a partly cloudy and cool to cold day for most of the province. The Lowveld, however, will stay warm, with Mbombela reaching 13 °C– 20 °C, Ermelo 7 °C– 17 °C, Emalahleni 8 °C– 19 °C, Standerton 6 °C– 19 °C, and Skukuza enjoying the highest temperatures at 15 °C– 26 °C. Isolated showers and rain are possible in the eastern parts, with drizzle likely along the escarpment. Limpopo shows a similar picture: morning fog may form over central areas, conditions remain partly cloudy and cool, yet the Lowveld stays warm (Phalaborwa 15 °C– 26 °C, Tzaneen 8 °C– 24 °C, Musina 12 °C– 24 °C, Lephalale 9 °C– 23 °C, Mokopane 7 °C– 23 °C). Polokwane will be cooler at 8 °C– 20 °C. Isolated showers and rain are also possible in the eastern Lowveld, accompanied by drizzle along the escarpment.
Free State and Northern Cape Summary
The Free State is forecast to have morning fog patches likely in the eastern interior, after which the day will be partly cloudy and cool. Bloemfontein will range from 5 °C– 19 °C, Welkom 7 °C– 20 °C, and Bethlehem 5 °C– 17 °C. In the Northern Cape, skies will be partly cloudy with temperatures varying from cool to warm. Isolated showers and thundershowers are possible over the north‑western parts, while the rest of the province remains dry. Notable temperature bands include Upington 8 °C– 24 °C, Kimberley 6 °C– 20 °C, De Aar 6 °C– 19 °C, Alexander Bay 10 °C– 20 °C, Springbok 12 °C– 22 °C, Calvinia 10 °C– 23 °C, and Sutherland 6 °C– 19 °C. Coastal winds will be light and variable early, turning moderate southerly to south‑easterly from the late afternoon.
Western Cape and Eastern Cape Overview
The Western Cape will experience morning fog patches over the interior, with the western parts remaining fine. The remainder of the province will be partly cloudy and cool to cold, although the north‑western sector will be warm (Vredendal 11 °C– 27 °C). Coastal winds are expected to be fresh to strong southerly to south‑easterly, with moderate easterly to north‑easterly breezes along the south coast; beach‑goers should stay alert for gusty conditions. Temperatures in key centres include Cape Town 13 °C– 20 °C, George 9 °C– 18 °C, Worcester 7 °C– 18 °C, Beaufort West 7 °C– 18 °C, and Oudtshoorn 7 °C– 19 °C.
The Eastern Cape is split in the forecast. The western half will be fine and cool to cold, with morning and evening fog likely in the extreme southern interior, warranting caution on roads during those periods. Coastal winds will be light northerly, shifting to light easterly later in the day. The eastern half will also be fine and cool to cold, with morning and evening fog confined to the extreme south. Coastal winds will be light northerly, becoming light south‑easterly as the day progresses. Representative temperatures are Gqeberha 14 °C– 19 °C, Makhanda 10 °C– 19 °C, Cradock 5 °C– 18 °C, Graaff‑Reinet 4 °C– 18 °C, East London 14 °C– 20 °C, Port St Johns 12 °C– 21 °C, Mthatha 7 °C– 20 °C, Komani 4 °C– 20 °C, and Qonce 10 °C– 19 °C.
KwaZulu‑Natal and Closing Notes
KwaZulu‑Natal will see fog over the interior, with the rest of the province partly cloudy and cool to cold. Isolated showers and rain are expected over the eastern parts, while coastal winds in the north will be light to moderate south‑easterly, turning north‑easterly by late afternoon and spreading southwards. Temperature ranges include Durban 17 °C– 23 °C, Richards Bay 17 °C– 23 °C, Pietermaritzburg 10 °C– 21 °C, and Ladysmith 9 °C– 20 °C. The report was compiled with the assistance of Toqan AI and disseminated by the South African Weather Service via their Twitter account (@SAWeatherServic) on 16 June 2026, accompanying a tweet that summarized the outlook for 16‑17 June 2026. Overall, the nation should prepare for a chilly, mostly dry day with scattered rain chances in the northeastern interior and remain vigilant for fog‑related visibility issues and strong coastal winds in the western and southern coastal zones.