Johannesburg weather in May
Temperature, rain and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Excellent
Best time to visit: April – October
What is the weather like in Johannesburg in May?
In May, Johannesburg is mild: daytime highs average 18 °C, and nights cool down to about 6 °C. The sun shines for around 7 hours a day. Rain is rare: about 3 days bring 21 mm in total. All in all, May is an excellent month for a holiday in Johannesburg.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 10 h 51 min06:38 – 17:30
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 22 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+2Africa/Johannesburg
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %63 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in May
- Sunscreen
- A jumper for the evenings
Johannesburg in May: quick answers
Is Johannesburg hot in May?
No. In May, Johannesburg is mild: daytime highs average 18 °C and nights drop to about 6 °C.
Does it rain much in Johannesburg in May?
Rain is rare: about 3 days bring 21 mm in total.
Johannesburg month by month
The whole year in JohannesburgAll destinations: South AfricaWhere to go in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences