South AfricaThe weather in May in Johannesburg
It's pleasantly warm in May in Johannesburg with an average temperature of 22°C. Temperatures this month range from a low of 20°C to a high of 24°C. At night, you can expect temperatures between 7°C and 11°C.
Looking for great weather? May is a good time to be in Johannesburg. The temperatures are nice, and there’s little chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Johannesburg, South Africa. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 28°C in 2015, Johannesburg reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 10°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 0°C to a highest value of 14°C.
Rainfall amount
In May, there is an average of 18 mm of precipitation, spread over 4 days. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in May for Johannesburg
Click on any day in May to get detailed info about the usual weather on that day in Johannesburg. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Johannesburg | New York | |
|---|---|---|
| Average temperature | 22°C | 22°C |
| Max. temperature | 24°C | 28°C |
| Min. temperature | 7°C | -5°C |
| Total precipitation | 18 mm | 105 mm |
| Rainy days | 4 days | 14 days |
Start of May
The month of May starts in Johannesburg with warm temps, averaging around 23°C during the day and nights around 10°C.
Mid May
By mid-May, daytime temps drop to around 22°C, with nights around 9°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of May
By the end of May, the average daytime temperature in Johannesburg is around 22°C, while nighttime temps are about 8°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.
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UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Johannesburg for all months and discover the best travel time
Curious about the weather in other parts of South Africa? Check out the climate and weather for spots like Cape Town, Krugerpark, Stellenbosch, or explore other destinations in South Africa.
Temperature charts
These charts show the average temperatures in May in Johannesburg, South Africa. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Johannesburg
Temperature in May in Johannesburg over the years
Precipitation charts
These charts show the average amount of precipitation in May in Johannesburg, South Africa. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Johannesburg
Total precipitation in May in Johannesburg over the years
Daily UV index in May in Johannesburg
This chart shows the average daily UV index in May in Johannesburg, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Johannesburg
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Average weather in Johannesburg by month
Click on a month below to see detailed weather info for Johannesburg. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.