May weather forecast and climate
Johannesburg, South Africa

The vast cityscape of Gauteng Province in Johannesburg, South Africa
The vast cityscape of Gauteng Province in Johannesburg, South Africa
May is a transitional month into winter. Its humidity drops further to read an average of 58%. The temperatures range between 8°C (46.4°F) and 20°C (68°F), and the city begins to dry up as rains drop further to 10.2mm (0.4") raining for an average of only three days in a month.
The sunshine hours, however, remain steady at an average of nine per day. The crowds may reduce a little for tourists who love warmer weather.

What is the temperature in May in Johannesburg?

The average high-temperature, in May, in Johannesburg, South Africa, is 18.9°C (66°F), while the average low-temperature is 7.2°C (45°F).
Average temperature in May - Johannesburg, South Africa
  • Average high temperature in May: 18.9°C

The warmest month (with the highest average high temperature) is January (25.6°C).
The month with the lowest average high temperature is June (16°C).

  • Average low temperature in May: 7.2°C

The month with the highest average low temperature is January (14.7°C).
Coldest months (with the lowest average low temperature) are June and July (4.1°C).

Average humidity in May - Johannesburg, South Africa
  • Average humidity in May: 56%

The month with the highest relative humidity is February (70%).
The month with the lowest relative humidity is August (46%).

Average rainfall in May - Johannesburg, South Africa
  • Average rainfall in May: 13mm

The wettest month (with the highest rainfall) is January (125mm).
The driest month (with the lowest rainfall) is July (4mm).

Average rainfall days in May - Johannesburg, South Africa
  • Average rainfall days in May: 2.9 days

The month with the highest number of rainy days is January (15.9 days).
The month with the lowest number of rainy days is July (1 days).

Average daylight in May / Average sunshine in May - Johannesburg, South Africa
  • Average daylight in May: 10.8h

The month with the longest days is December (Average daylight: 13.8h).
The month with shortest days is June (Average daylight: 10.5h).

  • Average sunshine in May: 8.9h

The month with most sunshine is September (Average sunshine: 9.4h).
The month with least sunshine is March (Average sunshine: 7.7h).

Average UV index in May - Johannesburg, South Africa
  • Average UV index in May: 6

Months with the highest UV index are January, February, March, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 5).

deutscheenglishespañolрусский中文