Johannesburg Weather in May
Johannesburg in May sees pleasant temperatures, with highs around 22°C (72°F) and overnight lows of 7°C (45°F). Overall excellent conditions make it one of the better months to visit.
Rainfall in Johannesburg in May
You can typically expect 3 days of rain this month, averaging around 17 mm (0.7 in). The occasional light shower is possible, but rain is rarely an issue this month.
Temperature in Johannesburg in May
If you're visiting Johannesburg in May, expect excellent temperatures with highs of 22°C (72°F) and overnight lows of 7°C (45°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Johannesburg in May
The city usually sees around 276 hours of sunlight, indicating many sunny days , a great month for sightseeing.If you're a fan of comfortable temperatures and drier conditions, May is a great time to visit.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Johannesburg's climate page.
Johannesburg Temperature in May
Min Temperature
7°C (45°F)
Max Temperature
22°C (72°F)
Chance of Rain
8%
Precipitation
17 mm (0.7 in)
Rainy days
3 days
Humidity
56%
Sunshine
276 hours
Percentage Sunshine
81%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Johannesburg typically stay consistent throughout May, with daily highs averaging around 22°C (72°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 10°C (50°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Johannesburg in May
Browse day-by-day weather records for Johannesburg spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Johannesburg historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Johannesburg.
- On May 8, 1998, temperatures climbed to 29°C (84°F), marking the warmest May day on record.
- Johannesburg registered its coldest May night on May 22, 2007, with temperatures dropping to -2°C (28°F).
Best Places in South Africa in May
Find out more about the weather in South Africa and which places have the best travel conditions in this month. See all of South Africa in May →
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What to Wear in Johannesburg in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Johannesburg in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Johannesburg's climate page.
Temperature Rainfall Sunshine Humidity
See the full Johannesburg climate overview or explore weather in South Africa.
