Johannesburg, South Africa Hourly Forecast
Johannesburg temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 3 PM - around 80°
- Coolest hour: 3 AM - around 62°
- Rain risk: low all day (peaks at 9%)
- UV peak: 12 PM at index 10 - sun protection recommended
- Windiest: 1 PM at 12 mph
Johannesburg hourly weather - Wednesday, September 16
In Johannesburg, expect a high near 80°F (27°C) around 3 PM and a low of 62°F (17°C) near 3 AM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 3 AM | Clear | 62° | 59° | 2% | 2 mph E | 47% | 0 | |
| 4 AM | Clear | 62° | 59° | 2% | 2 mph NNE | 48% | 0 | |
| 5 AM | Clear | 62° | 59° | 2% | 2 mph N | 49% | 0 | |
| 6 AM | Clear | 62° | 59° | 2% | 3 mph N | 49% | 0 | |
| 7 AM | Sunny | 63° | 60° | 1% | 3 mph N | 47% | 0 | |
| 8 AM | Sunny | 67° | 61° | 1% | 7 mph N | 41% | 1 | |
| 9 AM | Sunny | 70° | 62° | 1% | 10 mph N | 36% | 4 | |
| 10 AM | Sunny | 72° | 65° | 1% | 10 mph NNW | 33% | 6 | |
| 11 AM | Sunny | 75° | 67° | 1% | 11 mph NNW | 30% | 9 | |
| 12 PM | Sunny | 78° | 69° | 1% | 11 mph NNW | 27% | 10 | |
| 1 PM | Sunny | 79° | 70° | 0% | 12 mph NNW | 25% | 9 | |
| 2 PM | Sunny | 80° | 71° | 0% | 11 mph NW | 22% | 7 | |
| 3 PM | Sunny | 80° | 71° | 0% | 11 mph WNW | 22% | 4 | |
| 4 PM | Sunny | 79° | 71° | 0% | 10 mph WNW | 23% | 2 | |
| 5 PM | Sunny | 79° | 72° | 1% | 7 mph NW | 23% | 0 | |
| 6 PM | Sunny | 78° | 72° | 1% | 5 mph NW | 24% | 0 | |
| 7 PM | Clear | 76° | 72° | 1% | 4 mph WNW | 25% | 0 | |
| 8 PM | Clear | 75° | 72° | 1% | 1 mph WNW | 26% | 0 | |
| 9 PM | Clear | 74° | 71° | 1% | 1 mph ENE | 27% | 0 | |
| 10 PM | Overcast | 73° | 69° | 8% | 2 mph E | 28% | 0 | |
| 11 PM | Overcast | 73° | 68° | 9% | 4 mph ENE | 28% | 0 |
Johannesburg hourly weather - Thursday, September 17
In Johannesburg, expect a high near 81°F (27°C) around 2 PM and a low of 65°F (19°C) near 11 PM, with no meaningful precipitation risk.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Overcast | 72° | 68° | 9% | 3 mph NE | 29% | 0 | |
| 1 AM | Overcast | 72° | 68° | 9% | 3 mph E | 30% | 0 | |
| 2 AM | Overcast | 71° | 64° | 9% | 8 mph NE | 30% | 0 | |
| 3 AM | Clear | 70° | 62° | 1% | 10 mph NNE | 31% | 0 | |
| 4 AM | Clear | 69° | 60° | 1% | 11 mph NNE | 34% | 0 | |
| 5 AM | Clear | 68° | 59° | 1% | 12 mph NNE | 36% | 0 | |
| 6 AM | Clear | 67° | 57° | 1% | 14 mph NNE | 37% | 0 | |
| 7 AM | Smoky haze | 67° | 56° | 6% | 16 mph NNE | 38% | 0 | |
| 8 AM | Sunny | 69° | 58° | 1% | 15 mph NNE | 36% | 1 | |
| 9 AM | Partly Cloudy | 72° | 60° | 2% | 17 mph N | 32% | 3 | |
| 10 AM | Sunny | 74° | 62° | 1% | 19 mph N | 30% | 6 | |
| 11 AM | Sunny | 76° | 63° | 1% | 19 mph N | 28% | 8 | |
| 12 PM | Sunny | 78° | 65° | 1% | 19 mph N | 26% | 9 | |
| 1 PM | Sunny | 81° | 68° | 1% | 18 mph N | 22% | 8 | |
| 2 PM | Sunny | 81° | 68° | 1% | 20 mph NNW | 22% | 6 | |
| 3 PM | Sunny | 81° | 68° | 1% | 19 mph N | 23% | 4 | |
| 4 PM | Sunny | 81° | 68° | 1% | 19 mph N | 23% | 2 | |
| 5 PM | Sunny | 80° | 68° | 0% | 17 mph N | 24% | 0 | |
| 6 PM | Sunny | 75° | 64° | 1% | 16 mph N | 32% | 0 | |
| 7 PM | Patchy rain nearby | 73° | 63° | 4% | 16 mph NNE | 36% | 0 | |
| 8 PM | Clear | 70° | 61° | 1% | 15 mph NNE | 44% | 0 | |
| 9 PM | Clear | 69° | 59° | 2% | 16 mph NNE | 47% | 0 | |
| 10 PM | Clear | 66° | 57° | 2% | 17 mph NNE | 53% | 0 | |
| 11 PM | Clear | 65° | 57° | 3% | 15 mph NNE | 55% | 0 |
Johannesburg hourly weather - Friday, September 18
In Johannesburg, expect a high near 73°F (23°C) around 3 PM and a low of 60°F (16°C) near 6 AM; precipitation risk peaks at 19% around 2 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Clear | 65° | 56° | 3% | 14 mph NNE | 57% | 0 | |
| 1 AM | Overcast | 64° | 57° | 13% | 12 mph NNE | 57% | 0 | |
| 2 AM | Patchy rain nearby | 63° | 56° | 19% | 11 mph NNE | 57% | 0 | |
| 3 AM | Patchy rain nearby | 63° | 56° | 12% | 12 mph NNE | 57% | 0 | |
| 4 AM | Cloudy | 62° | 55° | 12% | 11 mph NNE | 59% | 0 | |
| 5 AM | Patchy rain nearby | 61° | 54° | 16% | 12 mph NE | 62% | 0 | |
| 6 AM | Overcast | 60° | 55° | 16% | 10 mph NE | 64% | 0 | |
| 7 AM | Partly Cloudy | 61° | 53° | 7% | 12 mph NE | 64% | 0 | |
| 8 AM | Sunny | 62° | 53° | 5% | 14 mph NE | 61% | 1 | |
| 9 AM | Cloudy | 64° | 54° | 8% | 16 mph NE | 55% | 3 | |
| 10 AM | Partly Cloudy | 67° | 57° | 5% | 17 mph NNE | 47% | 5 | |
| 11 AM | Overcast | 70° | 58° | 10% | 19 mph NNE | 42% | 7 | |
| 12 PM | Overcast | 71° | 59° | 10% | 20 mph NNE | 41% | 8 | |
| 1 PM | Overcast | 71° | 60° | 10% | 19 mph NNE | 40% | 7 | |
| 2 PM | Overcast | 72° | 61° | 10% | 17 mph NNE | 39% | 5 | |
| 3 PM | Overcast | 73° | 63° | 9% | 17 mph NNE | 37% | 3 | |
| 4 PM | Overcast | 73° | 63° | 9% | 16 mph NNE | 36% | 1 | |
| 5 PM | Cloudy | 73° | 63° | 5% | 16 mph NE | 35% | 0 | |
| 6 PM | Overcast | 70° | 60° | 8% | 17 mph NE | 39% | 0 | |
| 7 PM | Overcast | 68° | 57° | 10% | 17 mph NE | 43% | 0 | |
| 8 PM | Cloudy | 66° | 56° | 6% | 17 mph NE | 45% | 0 | |
| 9 PM | Clear | 64° | 54° | 2% | 17 mph NE | 48% | 0 | |
| 10 PM | Clear | 63° | 53° | 3% | 15 mph NE | 48% | 0 | |
| 11 PM | Clear | 62° | 52° | 2% | 15 mph NE | 52% | 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 62°F (17°C) around 3 AM up to 80°F (27°C) near 3 PM - about 4°F (2°C) above the typical September high of 76°F (25°C).
Precipitation chances stay minimal throughout, so plans can skip the umbrella. UV reaches 10 (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.