Johannesburg, South Africa 14-Day Forecast
South Africa 🇿🇦
71°
Smoky haze right now
Today: high 75°, low 59°
Updated 1 hour ago
Johannesburg weather for the next 14 days
Thursday, August 27
Sunny High 70° Low 56°Precipitation
17%
· 0.0 in
Max wind
12 mph
Humidity
46%
UV index
8 - High
Sunrise / sunset
06:25 AM / 05:53 PM
Friday, August 28
Sunny High 70° Low 54°Precipitation
2%
· 0.0 in
Max wind
12 mph
Humidity
44%
UV index
7 - High
Sunrise / sunset
06:24 AM / 05:53 PM
Saturday, August 29
Sunny High 70° Low 54°Precipitation
1%
· 0.0 in
Max wind
10 mph
Humidity
36%
UV index
7 - High
Sunrise / sunset
06:23 AM / 05:54 PM
Sunday, August 30
Overcast High 73° Low 56°Precipitation
6%
· 0.0 in
Max wind
11 mph
Humidity
26%
UV index
6 - High
Sunrise / sunset
06:22 AM / 05:54 PM
Monday, August 31
Overcast High 75° Low 61°Precipitation
4%
· 0.0 in
Max wind
12 mph
Humidity
24%
UV index
7 - High
Sunrise / sunset
06:21 AM / 05:54 PM
Tuesday, September 1
Sunny High 78° Low 62°Precipitation
1%
· 0.0 in
Max wind
12 mph
Humidity
31%
UV index
8 - Very High
Sunrise / sunset
06:20 AM / 05:55 PM
Wednesday, September 2
Sunny High 80° Low 64°Precipitation
2%
· 0.0 in
Max wind
14 mph
Humidity
28%
UV index
8 - Very High
Sunrise / sunset
06:19 AM / 05:55 PM
Thursday, September 3
Overcast High 80° Low 65°Precipitation
6%
· 0.0 in
Max wind
18 mph
Humidity
28%
UV index
8 - Very High
Sunrise / sunset
06:18 AM / 05:56 PM
Friday, September 4
Overcast High 83° Low 65°Precipitation
5%
· 0.0 in
Max wind
21 mph
Humidity
35%
UV index
8 - Very High
Sunrise / sunset
06:17 AM / 05:56 PM
Saturday, September 5
Sunny High 82° Low 64°Precipitation
1%
· 0.0 in
Max wind
19 mph
Humidity
37%
UV index
8 - Very High
Sunrise / sunset
06:16 AM / 05:57 PM
Sunday, September 6
Sunny High 81° Low 61°Precipitation
0%
· 0.0 in
Max wind
13 mph
Humidity
17%
UV index
8 - Very High
Sunrise / sunset
06:14 AM / 05:57 PM
Monday, September 7
Sunny High 82° Low 60°Precipitation
0%
· 0.0 in
Max wind
6 mph
Humidity
15%
UV index
8 - Very High
Sunrise / sunset
06:13 AM / 05:57 PM
Tuesday, September 8
Sunny High 79° Low 67°Precipitation
3%
· 0.0 in
Max wind
13 mph
Humidity
25%
UV index
8 - Very High
Sunrise / sunset
06:12 AM / 05:58 PM
Johannesburg 14-day outlook: the story
The warmest day of Johannesburg's 14-day outlook is Friday, September 4 with a high near 83°F (28°C); the coolest night comes Saturday, August 29, dipping to 54°F (12°C). The trend points warmer: week two runs about 8°F above week one. Highs over the next two weeks average 73°F (23°C), about 3°F (2°C) above 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 70°F (21°C) and sunny / Sunday 73°F (23°C) and overcast.
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, September 4, with a forecast high near 83°F (28°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