Johannesburg, South Africa Hourly Forecast
Johannesburg temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 3 PM - around 69°
- Coolest hour: 7 AM - around 54°
- Rain risk: low all day (peaks at 0%)
- UV peak: 12 PM at index 6 - sun protection recommended
- Windiest: 11 AM at 8 mph
Johannesburg hourly weather - Friday, August 7
In Johannesburg, expect a high near 69°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 | 60° | 53° | 0% | 4 mph ESE | 20% | 0 | |
| 1 AM | Clear | 58° | 50° | 0% | 6 mph E | 22% | 0 | |
| 2 AM | Clear | 57° | 50° | 0% | 4 mph ENE | 23% | 0 | |
| 3 AM | Clear | 56° | 49° | 0% | 4 mph NE | 24% | 0 | |
| 4 AM | Clear | 55° | 50° | 0% | 4 mph NE | 25% | 0 | |
| 5 AM | Clear | 55° | 50° | 0% | 4 mph NE | 25% | 0 | |
| 6 AM | Clear | 55° | 50° | 0% | 4 mph NE | 26% | 0 | |
| 7 AM | Sunny | 54° | 50° | 0% | 4 mph NE | 27% | 0 | |
| 8 AM | Sunny | 56° | 50° | 0% | 4 mph NE | 25% | 1 | |
| 9 AM | Sunny | 59° | 50° | 0% | 6 mph NE | 23% | 2 | |
| 10 AM | Sunny | 62° | 53° | 0% | 8 mph NNE | 20% | 4 | |
| 11 AM | Sunny | 65° | 55° | 0% | 8 mph N | 18% | 6 | |
| 12 PM | Sunny | 67° | 58° | 0% | 7 mph N | 16% | 6 | |
| 1 PM | Sunny | 68° | 60° | 0% | 6 mph N | 15% | 6 | |
| 2 PM | Sunny | 69° | 61° | 0% | 4 mph NNE | 14% | 4 | |
| 3 PM | Sunny | 69° | 62° | 0% | 3 mph NNE | 14% | 2 | |
| 4 PM | Sunny | 69° | 62° | 0% | 2 mph NNE | 14% | 1 | |
| 5 PM | Sunny | 68° | 62° | 0% | 2 mph NNE | 14% | 0 | |
| 6 PM | Clear | 66° | 60° | 0% | 2 mph N | 15% | 0 | |
| 7 PM | Clear | 65° | 58° | 0% | 3 mph N | 16% | 0 | |
| 8 PM | Smoky haze | 64° | 57° | 0% | 3 mph N | 18% | 0 | |
| 9 PM | Smoky haze | 62° | 56° | 0% | 2 mph NNW | 19% | 0 | |
| 10 PM | Smoky haze | 61° | 56° | 0% | 1 mph N | 20% | 0 | |
| 11 PM | Smoky haze | 58° | 49° | 1% | 9 mph NNE | 29% | 0 |
Johannesburg hourly weather - Saturday, August 8
In Johannesburg, expect a high near 67°F (20°C) around 3 PM and a low of 51°F (11°C) near 7 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 56° | 48° | 2% | 10 mph NNE | 49% | 0 | |
| 1 AM | Clear | 55° | 48° | 3% | 10 mph NNE | 54% | 0 | |
| 2 AM | Clear | 54° | 48° | 3% | 9 mph NNE | 57% | 0 | |
| 3 AM | Clear | 54° | 48° | 4% | 8 mph NNE | 58% | 0 | |
| 4 AM | Clear | 53° | 48° | 4% | 8 mph N | 60% | 0 | |
| 5 AM | Clear | 52° | 48° | 4% | 7 mph N | 62% | 0 | |
| 6 AM | Clear | 52° | 48° | 5% | 6 mph N | 65% | 0 | |
| 7 AM | Sunny | 51° | 49° | 5% | 5 mph N | 66% | 0 | |
| 8 AM | Sunny | 53° | 50° | 4% | 4 mph N | 61% | 1 | |
| 9 AM | Sunny | 56° | 52° | 3% | 4 mph N | 53% | 2 | |
| 10 AM | Sunny | 59° | 53° | 2% | 4 mph NNW | 45% | 4 | |
| 11 AM | Sunny | 61° | 56° | 1% | 4 mph NW | 38% | 5 | |
| 12 PM | Sunny | 63° | 58° | 1% | 4 mph NW | 33% | 6 | |
| 1 PM | Sunny | 65° | 60° | 1% | 3 mph NW | 28% | 6 | |
| 2 PM | Sunny | 67° | 61° | 1% | 2 mph NW | 25% | 4 | |
| 3 PM | Sunny | 67° | 62° | 1% | 2 mph NW | 23% | 2 | |
| 4 PM | Sunny | 67° | 62° | 0% | 2 mph NW | 22% | 1 | |
| 5 PM | Sunny | 67° | 61° | 0% | 2 mph NW | 22% | 0 | |
| 6 PM | Clear | 65° | 60° | 0% | 2 mph NW | 23% | 0 | |
| 7 PM | Clear | 64° | 59° | 0% | 1 mph NW | 24% | 0 | |
| 8 PM | Smoky haze | 62° | 57° | 0% | 2 mph WNW | 25% | 0 | |
| 9 PM | Smoky haze | 61° | 56° | 1% | 3 mph WNW | 28% | 0 | |
| 10 PM | Smoky haze | 60° | 55° | 1% | 2 mph WNW | 31% | 0 | |
| 11 PM | Smoky haze | 60° | 55° | 1% | 2 mph WNW | 33% | 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 69°F (21°C) near 3 PM - right in line with the typical August high of 70°F (21°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.