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United StatesThe weather in May in Johannesburg
It's hot in May in Johannesburg with an average temperature of 30°C. Temperatures this month range from a low of 26°C to a high of 35°C. At night, you can expect temperatures between 10°C and 17°C.
May is an awesome month to be in Johannesburg for sunny weather. You’ll have high temperatures and not much 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, California. 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 42°C in 2020, Johannesburg reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 15°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of 3°C to a highest value of 22°C.
Rainfall amount
According to weather history, there is only 2,1 mm of precipitation in May. The wind speed is around 5 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 | 30°C | 22°C |
| Max. temperature | 35°C | 28°C |
| Min. temperature | 10°C | -5°C |
| Total precipitation | 2,1 mm | 105 mm |
| Rainy days | 1 day | 14 days |
Start of May
The month of May starts in Johannesburg with hot temps, averaging around 30°C during the day and nights around 13°C.
Mid May
By mid-May, daytime temps drop to around 29°C, with nights around 13°C. No precipitation expected during this period, so you can enjoy plenty of sunshine.
End of May
By the end of May, the average daytime temperature in Johannesburg is around 33°C, while nighttime temps are about 15°C. No precipitation expected at the end of the month; it’ll be mostly sunny.
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UV index
The UV index is a maximum of 10 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Johannesburg for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in Johannesburg, California. 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, California. 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.