Johannesburg will see clear skies and cool mid-winter conditions on Wednesday, 17 June 2026, with temperatures ranging between 9°C and 16°C. The national weather pattern is dominated by settled high-pressure systems bringing mostly clear skies across seven provinces, while KwaZulu-Natal experiences light rain along the coast. The national average temperature today sits at 16°C, with Mpumalanga recording the warmest conditions at 24°C and several inland areas registering single-digit overnight minimums.
What This Means for Your Day
Morning commuters across Gauteng, the Free State and Limpopo should prepare for cold starts, with temperatures dropping to 8°C or 9°C before sunrise. Johannesburg residents will need warm layers for the early hours, though the afternoon will bring moderate relief under clear skies. KwaZulu-Natal’s coastal areas require umbrellas and waterproof jackets, particularly in Durban where light rain is expected throughout the day. North West province will experience brisk northeasterly winds reaching 26 km/h near Mahikeng, making it feel colder than the recorded temperature suggests.
South Africa Weather Highlights
- Warmest conditions in Mbombela, Mpumalanga, reaching 24°C
- Light rain affecting Durban and surrounding KwaZulu-Natal coastal areas
- Coldest overnight minimum of 8°C recorded in Polokwane and Bloemfontein
- Strong northeasterly winds of 26 km/h in North West province
- Clear skies dominating Western Cape, Eastern Cape, Northern Cape, Free State, Gauteng, Limpopo and North West
What to Expect Across the Provinces
Gauteng
Johannesburg will reach a maximum of 16°C under clear skies, dropping to 9°C overnight. Northeasterly winds of 8 km/h will remain light throughout the day. Pretoria and the East Rand can expect similar conditions, with humidity sitting at 55 per cent. The clear weather provides good visibility for outdoor activities, though early morning frost remains possible in low-lying areas.
KwaZulu-Natal
Durban faces light rain today with temperatures between 18°C and 21°C, accompanied by southerly winds at 10 km/h. Humidity levels reach 78 per cent, creating damp conditions along the coast. Pietermaritzburg and inland areas may see intermittent showers. Residents should monitor conditions if travelling along the N3 corridor, where reduced visibility could affect driving conditions.
Western Cape
Cape Town will enjoy clear skies with temperatures ranging from 13°C to 18°C. Southeasterly winds of 11 km/h will keep conditions fresh, particularly along the Atlantic Seaboard. Humidity sits at 73 per cent. Stellenbosch, Paarl and the Winelands can expect similar settled conditions, ideal for winter vineyard work. Coastal areas should prepare for chilly evening temperatures as the sun sets early.
Mpumalanga
Mbombela will record the nation’s highest temperature at 24°C, with a morning low of 12°C under partly cloudy skies. Light east-northeasterly winds at 4 km/h will keep conditions calm. Nelspruit and surrounding Lowveld areas will enjoy the warmest winter day in the country, though the Highveld escarpment will remain significantly cooler. Humidity of 55 per cent will make the afternoon comfortable.
Limpopo
Polokwane will see clear skies and a temperature range of 8°C to 19°C. Northeasterly winds of 9 km/h will remain moderate. The cold overnight minimum matches conditions in the Free State, making early Wednesday one of the coldest mornings this week. Tzaneen and the lowlands will be warmer, while Makhado and the far north can expect similar clear conditions with slightly higher daytime peaks.
Free State
Bloemfontein will register between 8°C and 18°C under clear skies, with northeasterly winds at 12 km/h. Humidity drops to 39 per cent, the lowest in the country today. Welkom, Bethlehem and Kroonstad will experience comparable conditions. The dry air and clear skies increase the risk of frost in exposed rural areas overnight, particularly in the eastern Free State highlands.
North West
Mahikeng will see temperatures between 10°C and 20°C with clear skies, but strong northeasterly winds of 26 km/h will dominate. This represents the strongest wind speed recorded nationally today. Rustenburg and Klerksdorp should prepare for blustery conditions, particularly in open areas. Humidity of 44 per cent and high-pressure systems will maintain dry, stable weather throughout the province.
Northern Cape
Kimberley will range from 11°C to 19°C under clear skies, with brisk north-northeasterly winds at 19 km/h. Upington and the Kalahari regions will see similar settled conditions. Humidity remains low at 43 per cent, reinforcing the dry winter pattern. Coastal areas near the Atlantic, including Springbok, will experience cooler conditions with possible morning mist.
Eastern Cape
Gqeberha will register 13°C to 18°C with clear skies and light northeasterly winds at 7 km/h. Humidity of 78 per cent will bring a coastal freshness, particularly in the morning. East London, Mthatha and the inland Karoo areas can expect similar settled weather. The province benefits from high-pressure dominance, ensuring stable conditions across both coastal and interior regions.
Weekend Outlook
Saturday and Sunday will bring increasing cloud cover across Gauteng, with Johannesburg expecting overcast skies and a slight temperature drop to between 8°C and 14°C by Sunday. The Free State and North West will remain mostly clear through Saturday before clouds build on Sunday. KwaZulu-Natal’s rain should clear by Friday, with the weekend offering drier conditions. Cape Town and the Western Cape will maintain clear skies throughout, with temperatures holding steady in the mid-to-high teens.
Weather Tips for Today
- Layer clothing in Johannesburg, Bloemfontein and Polokwane to manage cold mornings and milder afternoons
- Carry rain gear in Durban and along the KwaZulu-Natal coast
- Secure outdoor items in Mahikeng and Kimberley due to strong winds
- Use sunscreen in clear-sky provinces despite cooler temperatures, as winter UV levels remain moderate
- Drive cautiously in early morning frost zones across the Free State and Limpopo
- Take advantage of settled conditions in Mpumalanga for outdoor winter activities
Useful Weather and Travel Links
Looking for more to do after checking the forecast? Explore the latest events in Gauteng and plan your day around the weather.
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For official forecasting and weather advisories, visit the South African Weather Service.
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