Johannesburg, South Africa Hourly Forecast
Johannesburg temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 3 PM - around 70°
- Coolest hour: 7 AM - around 54°
- Rain risk: low all day (peaks at 8%)
- UV peak: 12 PM at index 6 - sun protection recommended
- Windiest: 4 PM at 8 mph
Johannesburg hourly weather - Friday, July 17
In Johannesburg, expect a high near 62°F (17°C) around 7 PM and a low of 58°F (14°C) near 11 PM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 7 PM | Smoky haze | 62° | 52° | 0% | 4 mph SSW | 14% | 0 | |
| 8 PM | Smoky haze | 60° | 51° | 0% | 4 mph S | 16% | 0 | |
| 9 PM | Smoky haze | 60° | 50° | 0% | 3 mph S | 17% | 0 | |
| 10 PM | Smoky haze | 59° | 50° | 0% | 2 mph S | 17% | 0 | |
| 11 PM | Smoky haze | 58° | 49° | 0% | 2 mph SSW | 18% | 0 |
Johannesburg hourly weather - Saturday, July 18
In Johannesburg, expect a high near 70°F (21°C) around 3 PM and a low of 54°F (12°C) near 7 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 57° | 49° | 0% | 2 mph SW | 18% | 0 | |
| 1 AM | Smoky haze | 57° | 49° | 0% | 2 mph WSW | 19% | 0 | |
| 2 AM | Smoky haze | 56° | 48° | 0% | 2 mph WSW | 19% | 0 | |
| 3 AM | Smoky haze | 56° | 47° | 1% | 2 mph SW | 19% | 0 | |
| 4 AM | Smoky haze | 55° | 47° | 0% | 3 mph SW | 19% | 0 | |
| 5 AM | Smoky haze | 55° | 49° | 0% | 3 mph SW | 19% | 0 | |
| 6 AM | Smoky haze | 54° | 46° | 0% | 3 mph WSW | 19% | 0 | |
| 7 AM | Smog | 54° | 49° | 0% | 3 mph SW | 20% | 0 | |
| 8 AM | Smog | 55° | 49° | 0% | 3 mph SW | 18% | 0 | |
| 9 AM | Smoky haze | 58° | 48° | 1% | 4 mph SW | 16% | 2 | |
| 10 AM | Cloudy | 61° | 52° | 6% | 4 mph SW | 14% | 3 | |
| 11 AM | Overcast | 64° | 54° | 8% | 6 mph SW | 12% | 5 | |
| 12 PM | Sunny | 67° | 56° | 1% | 6 mph WSW | 11% | 6 | |
| 1 PM | Sunny | 69° | 58° | 0% | 7 mph WSW | 10% | 6 | |
| 2 PM | Sunny | 70° | 58° | 0% | 8 mph WSW | 9% | 4 | |
| 3 PM | Sunny | 70° | 59° | 1% | 8 mph SW | 9% | 2 | |
| 4 PM | Sunny | 70° | 58° | 1% | 8 mph SW | 9% | 1 | |
| 5 PM | Sunny | 68° | 57° | 1% | 7 mph SW | 10% | 0 | |
| 6 PM | Clear | 65° | 55° | 1% | 5 mph SW | 11% | 0 | |
| 7 PM | Clear | 63° | 53° | 1% | 5 mph SSW | 13% | 0 | |
| 8 PM | Clear | 62° | 52° | 1% | 4 mph SSW | 14% | 0 | |
| 9 PM | Smoky haze | 61° | 51° | 1% | 4 mph SSW | 15% | 0 | |
| 10 PM | Smoky haze | 60° | 50° | 1% | 4 mph SSW | 16% | 0 | |
| 11 PM | Smoky haze | 59° | 50° | 2% | 3 mph SSW | 17% | 0 |
Johannesburg hourly weather - Sunday, July 19
In Johannesburg, expect a high near 69°F (20°C) around 3 PM and a low of 54°F (12°C) near 7 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Partly Cloudy | 59° | 50° | 2% | 3 mph SSW | 18% | 0 | |
| 1 AM | Smoky haze | 58° | 50° | 2% | 3 mph SW | 18% | 0 | |
| 2 AM | Smoky haze | 58° | 48° | 1% | 4 mph SW | 19% | 0 | |
| 3 AM | Smoky haze | 57° | 48° | 1% | 4 mph SW | 20% | 0 | |
| 4 AM | Partly Cloudy | 56° | 48° | 2% | 4 mph SW | 21% | 0 | |
| 5 AM | Clear | 55° | 48° | 1% | 4 mph SW | 22% | 0 | |
| 6 AM | Clear | 54° | 48° | 1% | 4 mph SSW | 22% | 0 | |
| 7 AM | Sunny | 54° | 49° | 1% | 4 mph SSW | 23% | 0 | |
| 8 AM | Smoky haze | 54° | 49° | 0% | 4 mph SSW | 22% | 1 | |
| 9 AM | Sunny | 57° | 47° | 0% | 5 mph SSW | 20% | 2 | |
| 10 AM | Sunny | 60° | 49° | 0% | 7 mph SSW | 19% | 4 | |
| 11 AM | Sunny | 64° | 52° | 0% | 8 mph SSW | 17% | 6 | |
| 12 PM | Sunny | 66° | 53° | 0% | 9 mph SSW | 16% | 6 | |
| 1 PM | Sunny | 67° | 55° | 0% | 9 mph SW | 14% | 6 | |
| 2 PM | Sunny | 68° | 56° | 0% | 10 mph SW | 13% | 4 | |
| 3 PM | Sunny | 69° | 56° | 0% | 10 mph SW | 13% | 2 | |
| 4 PM | Sunny | 68° | 55° | 0% | 10 mph SW | 13% | 1 | |
| 5 PM | Sunny | 66° | 54° | 0% | 8 mph SW | 14% | 0 | |
| 6 PM | Clear | 64° | 53° | 0% | 6 mph SSW | 16% | 0 | |
| 7 PM | Clear | 62° | 52° | 0% | 5 mph SSW | 17% | 0 | |
| 8 PM | Smoky haze | 61° | 51° | 0% | 5 mph SSW | 18% | 0 | |
| 9 PM | Smoky haze | 60° | 50° | 0% | 4 mph S | 19% | 0 | |
| 10 PM | Smoky haze | 58° | 49° | 0% | 4 mph S | 20% | 0 | |
| 11 PM | Smoky haze | 58° | 48° | 0% | 4 mph S | 22% | 0 |
Quick answers for the hours ahead
What is the warmest hour in Johannesburg today?
Will it rain in Johannesburg tonight?
When is the UV index highest in Johannesburg today?
Johannesburg hour-by-hour: what to expect
Over the next 24 hours in Johannesburg, temperatures range from 54°F (12°C) around 7 AM up to 70°F (21°C) near 3 PM - about 7°F (4°C) above the typical July high of 63°F (17°C).
Precipitation chances stay minimal throughout, so plans can skip the umbrella. UV reaches 6 (12 PM) - sun protection recommended through midday.
The “feels like” column blends humidity and wind into an apparent temperature - see how it works in our feels-like temperature guide. Planning further ahead? Check the Johannesburg 14-day forecast or the monthly climate averages.