United StatesAverage weather for Johannesburg in May
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.
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. There’s little chance of precipitation. The weather’s mostly sunny and dry.
With the temperature difference between day and night, it’s smart to wear layers.
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.
Since it cools down at night, it’s a good idea to wear layers.
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.
Because temperatures drop in the evening, wearing layers is recommended.
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.
Johannesburg in May |
New York | ||
|---|---|---|---|
 Average temperature |
30°C | 22°C | |
 Max. temperature |
35°C | 28°C | |
| Min. temperature |
26°C | -5°C | |
 Total precipitation |
2,1 mm | 105 mm | |
| Rainy days |
1 day | 14 days | |
April
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.
Is May a good time to visit Johannesburg?
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.
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.
Check out the climate of Johannesburg for all months and discover the best travel time
Daily Temperature in May in Johannesburg
This chart shows the average daily high and low temperatures in May for Johannesburg, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in May in Johannesburg
The chart below shows the average daily precipitation in May for Johannesburg, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for May, you can expect about 1 day of precipitation in Johannesburg.
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.
Temperature in May in Johannesburg over the years
This chart shows the average temperature in May in Johannesburg, measured in degrees Celsius, over the past few years.
Total precipitation in May in Johannesburg over the years
This chart shows the average precipitation in May in Johannesburg, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
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.
Weather experiences in May in Johannesburg
Have you been to Johannesburg in May?
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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.
Or check out the climate of Johannesburg for all months at once
