May 1 is statistically one of the best days of the year in Johannesburg. With minimal rain risk (12%) and pleasant highs of 20°C, it's ideal for outdoor adventures. Johannesburg is currently in its most popular travel window, meaning vibrant crowds and premium pricing. Note: May 1 is Workers' Day in Johannesburg, so expect special events, closures, and festive atmosphere.
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Essential Travel Info for Johannesburg
Currency
ZAR
R South African rand
Language
Afrikaans
+10 more
Driving
Left side
Connect
Always-On[dead link], +27 11 575-2505, p...
Safety
Moderate Safety
GPI: 2.283
Johannesburg Weather Forecast for May 1
"Mild & Comfortable. Expect average highs of 19.9°C. 12% chance of rain."
What to Wear in Johannesburg in May
Based on historical data for May 1, Johannesburg typically experiences temperatures between 8.5°C and 19.9°C. We recommend packing light jacket, long pants to stay comfortable. Trends suggest it will stay mostly dry (12% rain probability), but checking the forecast before heading out is always wise.
Complete Packing Guide
Weekly breakdown & essential items for Johannesburg
Smart Suitcase
- Light Jacket
- Long Pants
Average High
19.9°C
Daytime Peak
Average Low
8.5°C
Nighttime Low
Feels Like
19.9°C
🌤️ Feels accurate
Rain Chance
12%
Avg 0.5mm if it rains
Cloud Cover
34%
Overcast
Pressure
1020.7 hPa
Low volatility
Johannesburg Weather Conditions & UV Index
Weather Confidence
30-year variance analysis
Based on 10 years of data
🎯 This date historically delivers consistent weather 98% of the time. Safe to plan outdoor activities with confidence.
Sun Exposure
UV Index & Safety Guide
Protection Needed
SPF 15 for extended outdoor time
Type I-II
🔴 133 min to burn
Type III-IV
🟡 200 min to burn
Type V-VI
🟢 333 min to burn
UV estimate based on latitude, season & cloud cover. Actual UV may vary.
Outdoor Comfort
How pleasant is it outside?
Dew Point
12.6°C
Pleasant
Heat Stress
Low
No heat warning
😊 Best outdoor time:
Any time during daylight hours
Travel & Logistics Insights
Local Calendar
Holiday
Workers' Day
Flight Traffic
High
100/100 pressure index
Health Advisory
Required
2 vaccines • View Details →
Landing Slots
~300
Daily arrival options (inc. codeshare)
Sunrise, Sunset & Wind in Johannesburg
Daylight & Sun
Solar Elevation Cycle
🌅 Sunrise
06:32
☀️ Noon
12:06
🌇 Sunset
17:39
⏱️ Daylight
11h 7m
Wind Speed
13.6 km/h
Gentle breeze
Sunshine
9.3 hrs
Direct Sun (Cloud-free)
Humidity
63%
Slightly humid
Travel Intelligence
Exclusive flight analytics & health data for Johannesburg
Smart Flight Estimator
Airport-to-Airport Logistics
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Travel Health & Safety in Johannesburg
Travel Comfort Index
Real-time tourism conditions
Weather Quality
☀️ Excellent
Tourist Crowds
🟡 Busy
Price Level
💰💰💰 Expensive
Health & Wellbeing
Meteo-Health Forecast
Stable conditions. Low risk of headaches.
Weather unlikely to affect joint pain.
High pressure may reduce activity.
Air quality is acceptable. Sensitive individuals should limit prolonged outdoor exertion.
Regional Safety Profile
Seismic Activity
Moderate seismic activity. Occasional tremors possible.
"According to 30YearWeather's analysis of 30 years of NASA satellite data, Johannesburg on May 1 averages 19.9°C with a 12% precipitation probability. Wedding/Outdoor Event Score: 100/100."
— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology
Johannesburg Weather History (2010–2024)
Temperature History
Hall of Fame
Records from last 10 years
Compare Other Cities
Same date (May 1) in other destinations
🌍 Explore the same date in different destinations around the world
📍 Is Johannesburg Worth Visiting on May 1?
Planning a trip to Johannesburg on May 1? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 19.9°C with a 12% historical precipitation risk.
🎉 Local Event: The date coincides with Workers' Day, which may influence local business hours and event availability.
✈️ Travel Logistics: Approximately 300 landing slots available daily during this period, indicating manageable crowd levels.
💉 Health Advisory: 9 vaccinations are recommended for South Africa, including COVID-19.
📊 Historical Extremes: The hottest May 1 recorded in the last 30 years saw temperatures hit 24.1°C in 2024, while the coldest dropped to 5.8°C in 2022.