Johannesburg, South Africa 14-Day Forecast
South Africa 🇿🇦
63°
Sunny right now
Today: high 63°, low 48°
Updated 1 hour ago
Johannesburg weather for the next 14 days
Sunday, August 16
Sunny High 66° Low 51°Precipitation
1%
· 0.0 in
Max wind
5 mph
Humidity
32%
UV index
7 - High
Sunrise / sunset
06:35 AM / 05:48 PM
Monday, August 17
Sunny High 70° Low 54°Precipitation
1%
· 0.0 in
Max wind
6 mph
Humidity
28%
UV index
8 - High
Sunrise / sunset
06:34 AM / 05:48 PM
Tuesday, August 18
Sunny High 73° Low 57°Precipitation
0%
· 0.0 in
Max wind
4 mph
Humidity
23%
UV index
8 - High
Sunrise / sunset
06:33 AM / 05:49 PM
Wednesday, August 19
Smoky haze High 74° Low 56°Precipitation
0%
· 0.0 in
Max wind
6 mph
Humidity
24%
UV index
7 - High
Sunrise / sunset
06:32 AM / 05:49 PM
Thursday, August 20
Sunny High 76° Low 62°Precipitation
0%
· 0.0 in
Max wind
3 mph
Humidity
20%
UV index
7 - High
Sunrise / sunset
06:31 AM / 05:50 PM
Friday, August 21
Sunny High 75° Low 63°Precipitation
1%
· 0.0 in
Max wind
7 mph
Humidity
21%
UV index
7 - High
Sunrise / sunset
06:31 AM / 05:50 PM
Saturday, August 22
Sunny High 77° Low 63°Precipitation
1%
· 0.0 in
Max wind
7 mph
Humidity
21%
UV index
8 - Very High
Sunrise / sunset
06:30 AM / 05:51 PM
Sunday, August 23
Sunny High 70° Low 58°Precipitation
1%
· 0.0 in
Max wind
12 mph
Humidity
43%
UV index
7 - High
Sunrise / sunset
06:29 AM / 05:51 PM
Monday, August 24
Sunny High 72° Low 56°Precipitation
2%
· 0.0 in
Max wind
9 mph
Humidity
46%
UV index
7 - High
Sunrise / sunset
06:28 AM / 05:51 PM
Tuesday, August 25
Sunny High 74° Low 60°Precipitation
1%
· 0.0 in
Max wind
5 mph
Humidity
34%
UV index
7 - High
Sunrise / sunset
06:27 AM / 05:52 PM
Wednesday, August 26
Sunny High 75° Low 61°Precipitation
1%
· 0.0 in
Max wind
6 mph
Humidity
28%
UV index
7 - High
Sunrise / sunset
06:26 AM / 05:52 PM
Thursday, August 27
Sunny High 76° Low 60°Precipitation
0%
· 0.0 in
Max wind
7 mph
Humidity
25%
UV index
7 - High
Sunrise / sunset
06:25 AM / 05:53 PM
Friday, August 28
Sunny High 79° Low 66°Precipitation
0%
· 0.0 in
Max wind
6 mph
Humidity
21%
UV index
8 - Very High
Sunrise / sunset
06:24 AM / 05:53 PM
Johannesburg 14-day outlook: the story
The warmest day of Johannesburg's 14-day outlook is Friday, August 28 with a high near 79°F (26°C); the coolest night comes Saturday, August 15, dipping to 48°F (9°C). The trend points warmer: week two runs about 4°F above week one. Highs over the next two weeks average 71°F (22°C), right in line with the typical August high of 70°F (21°C).
No day in the outlook currently carries a strong precipitation signal. For the weekend, expect Saturday 63°F (17°C) and smoky haze / Sunday 66°F (19°C) and sunny.
For typical conditions month by month, see the Johannesburg climate & average temperatures guide.
Johannesburg forecast questions
Will it rain in Johannesburg this week?
No day in the current 14-day outlook shows a strong rain signal for Johannesburg.
What will be the warmest day in Johannesburg over the next 14 days?
Friday, August 28, with a forecast high near 79°F (26°C).
How accurate is a 14-day forecast for Johannesburg?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Johannesburg by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 78° | 58° | 14 | 4.6 in | 11.6 h/day | 66% |
| February | 77° | 58° | 13 | 4.1 in | 11.0 h/day | 68% |
| March | 76° | 56° | 9 | 2.4 in | 10.7 h/day | 65% |
| April | 71° | 51° | 8 | 2.2 in | 10.1 h/day | 65% |
| May | 68° | 45° | 2 | 0.6 in | 9.8 h/day | 54% |
| June | 63° | 40° | 1 | 0.3 in | 9.8 h/day | 51% |
| July | 63° | 39° | 0 | 0.1 in | 10.2 h/day | 46% |
| August | 70° | 44° | 1 | 0.1 in | 10.6 h/day | 40% |
| September | 76° | 50° | 3 | 0.5 in | 11.2 h/day | 39% |
| October | 79° | 53° | 7 | 1.5 in | 11.1 h/day | 46% |
| November | 79° | 56° | 11 | 3.0 in | 11.5 h/day | 56% |
| December | 79° | 59° | 16 | 4.3 in | 11.3 h/day | 64% |
14-day forecasts nearby