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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Evening Ledger weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above for Johannesburg’s conditions today. Its high altitude brings mild daytime highs and sharp evening chill, so pack layers and sun protection for outdoor plans.
What is the forecast for Johannesburg in the coming days?
For the most reliable week-ahead picture, refer to the live forecast above; summer afternoons often bring thunderstorms, while winter stays clear and dry. The 7-day view helps you time activities.
- Summer (Oct–Apr): afternoon storms, high UV. Check the live forecast for daily storm timing.
- Winter (May–Sep): sunny days, cold nights. The 7-day forecast above shows night-time lows.
- For longer planning, the weather johannesburg 14 days and 21 day weather forecast johannesburg offer trends, but shorter ranges are more accurate.
- The BBC’s johannesburg weather bbc page complements the live forecast above.
How does Johannesburg’s weather change through the year?
Johannesburg has a subtropical highland climate: warm, thundery summers and mild, dry winters. Monthly averages reveal a wide temperature swing between day and night.
- Johannesburg weather december is typically the wettest and hottest month, with frequent storms.
- July is the coolest, with average lows near 4°C – check the weather in johannesburg tomorrow for current chill.
- For typical conditions, see the johannesburg weather monthly data on the live forecast above.
- The weather in johannesburg 10 days and johannesburg weather 7 day forecast give a practical horizon for planning.
How reliable is the 10-day forecast for Johannesburg?
Forecasts beyond 7 days are less precise due to the region’s convective storms. The live forecast above and the BBC’s johannesburg weather page give a good indication, but shorter-range updates are more dependable.
When is the best time to visit Johannesburg?
Autumn (March–May) and spring (September–November) offer mild temperatures and fewer storms. December brings heat and rain, but the landscape is lush – check the live forecast above before booking.
Why is UV so high in Johannesburg?
The city’s altitude reduces atmospheric filtering. Even on cloudy days, UV can be intense. The live forecast above includes UV levels; wear sun protection and a hat when outdoors.
For a wider view of weather patterns, see our UK weather hub or the 10-day forecast for UK cities.