Weather tomorrow: Johannesburg
Forecast for tomorrow, 29 September: overcast and light rain. The daily air temperature range is 13 to 16 °C. Chance of precipitation tomorrow according to the daily forecast: 85%. Forecast precipitation amount: 9.5 mm. Wind from the northeast at 5.8 m/s.
tuesday 29 september
Overcast and light rain
+16°
+13°
Sunset 18:07
G/m activity 2
Precipitation probability 85%
Precipitation 9.5 mm
Wind
5.8 m/s
Pressure 826.6 hPa
Index UV 4
Humidity 79%
Sunrise 05:50
Moon Waning Gibbous
Sunrise 05:50
Sunset 18:07
G/m activity 2
Moon Waning Gibbous
00:00
16°
NE
6.1 m/s01:00
15°
NE
5.6 m/s02:00
15°
NE
4.7 m/s03:00
15°
NE
5 m/s04:00
14°
NE
4.7 m/s05:00
14°
NE
5.3 m/s06:00
14°
NE
5.3 m/s07:00
14°
NE
5.3 m/s08:00
14°
NE
5.3 m/s09:00
14°
N
5 m/s10:00
14°
N
5 m/s11:00
14°
N
5.3 m/s12:00
14°
N
5.6 m/s13:00
15°
N
4.4 m/s14:00
16°
N
3.9 m/s15:00
15°
N
3.9 m/s16:00
14°
N
4.2 m/s17:00
14°
N
5 m/s18:00
14°
NE
4.4 m/s19:00
14°
NE
4.4 m/s20:00
14°
N
3.6 m/s21:00
14°
N
3.6 m/s22:00
14°
NE
3.9 m/s23:00
14°
N
3.9 m/sWhat is the atmospheric pressure in Johannesburg tomorrow?
Pressure adjusted for location elevation. Location elevation: 1775 m relative to sea level
Forecast for 29.09.2026 · Local time
Pressure: 823.9–829.3 hPa.
Minimum: 823.9 hPa01:00Also at other hours
Maximum: 829.3 hPa10:00–11:00Also at other hours
Largest change over 3 hours:
+2.7 hPa · 04:00–07:00
First of 5 intervals with the same change magnitude shown.
hPa · Change over the previous 3 hours
Colours show pressure relative to this day’s range
Lower · 823.9 Scale midpoint · 826.6 Higher · 829.3 Largest change over 3 hoursWhat is the chance of precipitation in Johannesburg tomorrow?
Chance of precipitation tomorrow according to the daily forecast: 85%.
Precipitation for tomorrow
| 00:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 19% |
|---|---|---|
| 01:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 24% |
| 02:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 27% |
| 03:00 | Amount of precipitation in millimeters (mm): 0.6 mm | Probability of precipitation in percent (%): 53% |
| 04:00 | Amount of precipitation in millimeters (mm): 0.2 mm | Probability of precipitation in percent (%): 31% |
| 05:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 20% |
| 06:00 | Amount of precipitation in millimeters (mm): 0.5 mm | Probability of precipitation in percent (%): 53% |
| 07:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 31% |
| 08:00 | Amount of precipitation in millimeters (mm): 1.1 mm | Probability of precipitation in percent (%): 68% |
| 09:00 | Amount of precipitation in millimeters (mm): 0.7 mm | Probability of precipitation in percent (%): 61% |
| 10:00 | Amount of precipitation in millimeters (mm): 0.6 mm | Probability of precipitation in percent (%): 59% |
| 11:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 34% |
| 12:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 24% |
| 13:00 | Amount of precipitation in millimeters (mm): 0 mm | Probability of precipitation in percent (%): 21% |
| 14:00 | Amount of precipitation in millimeters (mm): 0.3 mm | Probability of precipitation in percent (%): 36% |
| 15:00 | Amount of precipitation in millimeters (mm): 0.2 mm | Probability of precipitation in percent (%): 34% |
| 16:00 | Amount of precipitation in millimeters (mm): 0.4 mm | Probability of precipitation in percent (%): 48% |
| 17:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 35% |
| 18:00 | Amount of precipitation in millimeters (mm): 0.2 mm | Probability of precipitation in percent (%): 35% |
| 19:00 | Amount of precipitation in millimeters (mm): 0.1 mm | Probability of precipitation in percent (%): 34% |
| 20:00 | Amount of precipitation in millimeters (mm): 0.3 mm | Probability of precipitation in percent (%): 41% |
| 21:00 | Amount of precipitation in millimeters (mm): 1.1 mm | Probability of precipitation in percent (%): 69% |
| 22:00 | Amount of precipitation in millimeters (mm): 1.2 mm | Probability of precipitation in percent (%): 68% |
| 23:00 | Amount of precipitation in millimeters (mm): 0.2 mm | Probability of precipitation in percent (%): 38% |
Johannesburg weather tomorrow: morning, afternoon and evening
Morning: overcast and light rain, +14 °C. Afternoon: overcast and showers, +14 °C. Evening: overcast and light rain, +14 °C.
According to the hourly forecast, tomorrow's highest temperature is expected at 00:00 and at 14:00, at around +16 °C. Times are local.
Tomorrow's strongest winds are expected at 00:00 (from the northeast). The lightest winds are expected from 20:00 to 21:00 (from the north). Times are local.
Temperature and wind for tomorrow
What geomagnetic activity is forecast for Johannesburg tomorrow?
The highest forecast Kp index for tomorrow is 2.
