The best time to visit Johannesburg is March through May and September through October. March through May (autumn) delivers 19-25°C (66-77°F) daytime temperatures, low rainfall (15-85mm depending on the month), and clear skies that make game viewing at nearby Pilanesberg or Kruger National Park excellent as vegetation thins. September and October (spring) bring 23-25°C (73-77°F) daytime, the jacaranda bloom that turns entire suburbs purple, and increasing but still manageable rainfall. Avoid June and July only if you cannot handle cold nights (4°C/39°F), and December through February if afternoon thunderstorms will disrupt your plans.
Best Time to Visit Johannesburg: Weather, Safari, and Events
Best Weather: March-May and September-October
Autumn (March-May) delivers Johannesburg’s finest weather for sightseeing. March still carries summer warmth at 25°C (77°F) but rainfall drops to 85mm and evenings begin to cool. April is the sweet spot at 22°C (72°F) days, 10°C (50°F) nights, and only 40mm of rain. May brings crisp 19°C (66°F) days and 6°C (43°F) nights with cloudless skies. Spring (September-October) is equally good: September warms to 23°C (73°F) with 25mm of rain, while October brings the jacaranda bloom at 25°C (77°F) and 72mm of rain from the returning thunderstorms.
Best for Safari and Wildlife: May-September (Dry Winter)
The dry winter months (May-September) offer the best wildlife viewing within driving distance of Johannesburg. Pilanesberg National Park (2.5 hours northwest) and Kruger National Park (4-5 hours east) have thinned vegetation, making animals easier to spot. Water sources shrink, concentrating wildlife around remaining waterholes. The downside: early morning game drives start at 5:30am when temperatures hover at 4-6°C (39-43°F). Pack thermal layers, a heavy jacket, gloves, and a beanie. Most safari lodges provide blankets on vehicles.
Best for Budget: June-July and December
Johannesburg hotel rates drop 15-25% in June and July, the city’s coldest months. International tourists avoid South Africa during its winter, and domestic travelers head to the coast. December sees another price drop as Johannesburg empties for the coastal holiday season. You will find the best deals at business hotels in Sandton, where corporate travel dries up over Christmas and New Year. The tradeoff: June-July nights are cold (4°C/39°F) and December brings daily afternoon thunderstorms.
Best for Jacarandas: October
October is Johannesburg’s most beautiful month. Roughly 70,000 jacaranda trees planted across the city’s northern suburbs (especially Saxonwold, Parkview, and Rosebank) erupt in purple blossom. The trees line entire streets, creating purple tunnels against the blue Highveld sky. The best viewing streets include Jameson Avenue in Parkview and Victoria Avenue in Saxonwold. Book accommodation 2-3 months ahead as October coincides with peak business travel season.
Months to Avoid
Avoid June and July if you cannot handle cold. Avoid December through February if afternoon thunderstorms (daily, 3pm-6pm) will disrupt outdoor plans. The combination of 26°C heat, 60-72% humidity, and dramatic lightning storms defines Johannesburg summers. The storms are spectacular to watch from a hotel room or restaurant but can halt outdoor activities for 1-2 hours daily.
Johannesburg Seasonal Guide
Summer (October-April): Hot, Wet, and Green
Johannesburg summers bring 25-26°C (77-79°F) highs, daily afternoon thunderstorms lasting 30-60 minutes, and 85% of annual rainfall. The landscape turns lush green from October onward. Mornings are typically clear and sunny, making this the season for early starts. The UV index sits at extreme levels (11+) and the altitude (1,753m) means you burn faster than at sea level.
Winter (May-September): Dry, Sunny, and Cold at Night
Johannesburg winters deliver cloudless blue skies, daytime highs of 17-23°C (63-73°F), and cold nights dropping to 4°C (39°F) with frost in outer suburbs. Rainfall is negligible (5-15mm/month). The air is extremely dry (45-56% humidity). This is the best season for photographers and anyone who wants guaranteed sunshine. Pack for two climates: summer clothes for daytime, winter gear for dawn and after sunset.
Best Time to Visit Johannesburg: Monthly Summary
- January: Hot (15-26°C), wet (125mm), daily storms. Low crowds. Good for budget.
- February: Hot (15-26°C), wet (90mm). Similar to January.
- March: Warm (14-25°C), rain decreasing (85mm). Transition to autumn.
- April: Excellent (10-22°C, 40mm). Dry, clear skies. Best month.
- May: Excellent (6-19°C, 15mm). Crisp and sunny. Best safari month.
- June: Cold nights (4-17°C, 8mm). Cloudless. Coldest month.
- July: Cold nights (4-17°C, 5mm). Driest month. Budget deals.
- August: Warming (6-20°C, 8mm). Spring begins. Windy.
- September: Excellent (10-23°C, 25mm). Warm days, cool nights.
- October: Jacaranda season (12-25°C, 72mm). Storms return. Book early.
- November: Hot and stormy (14-25°C, 115mm). Daily afternoon rain.
- December: Peak summer (15-26°C, 120mm). City empties. Good deals.
