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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the StoryShift weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Johannesburg enjoys a subtropical highland climate with mild, sunny winters and warm, often thundery summers. The live forecast above gives the current conditions, but the best months to visit are April and May, or August and September, for comfortable temperatures and lower rainfall.
What is the weather in Johannesburg like each month?
Summer runs from October to March, with afternoon thunderstorms common from November to January. December and January are the wettest months, with high humidity and temperatures around 25–28°C. Winter, from June to August, is dry and crisp, with clear skies and daytime highs of 16–19°C, though nights can drop near freezing. Spring and autumn offer the most stable, pleasant weather for outdoor plans.
What should I pack for a trip to Johannesburg?
For summer, pack light layers, a waterproof jacket for sudden storms, and sun protection. In winter, bring a warm coat, scarf, and gloves for chilly mornings and evenings. Comfortable walking shoes are essential year-round. The city’s high altitude (1,753 metres) means strong UV levels, so sunglasses and sunscreen are advisable even on cooler days.
What is the weather in Johannesburg tomorrow?
The live forecast above provides the most accurate prediction for tomorrow. Johannesburg’s weather can shift quickly, especially in summer, so check the hourly breakdown for rain timing and temperature changes.
Is Johannesburg weather good for a December holiday?
December is hot and humid, with frequent afternoon thunderstorms. It’s a popular time for local holidays, so expect crowds and higher prices. If you don’t mind rain, the city is green and lively, but consider April or September for drier, milder conditions.
How accurate is the 14-day weather forecast for Johannesburg?
Long-range forecasts, such as the 14-day or 21-day outlook, give a general trend but become less reliable after about seven days. For trip planning, the 7-day forecast is more dependable. Always cross-check with the live forecast above for the latest updates.
For UK travellers, the best value and comfort come in the shoulder seasons. You can compare conditions with UK weather or check the 10-day forecast before departure. For more regional insight, see Bristol weather or Glasgow weather.