Climate averages 1991–2020
Johannesburg weather
in October.
A warm, moderately wet month: the warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Johannesburg: daytime highs average 24.4°C and nights cool to about 10.9°C. By daytime temperature it is the warmest month of the year.
Expect about 75 mm of rain on roughly 11 days, which makes October a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 41 min on an average October day.
The nearest other city in this atlas is Alberton (11 km away). In October its highs average 25.6°C, 1.2°C warmer than Johannesburg, with 75 mm of rain.
Among the 95 cities listed in South Africa, Johannesburg ranks 66th of 95 for the warmest October highs and joint 62nd of 95 for the driest October (rainfall, lowest first). The mean October high of those 95 cities is 25.4°C; Johannesburg is 1.0°C cooler than that mean.
From October to November, average highs fall by 0.3°C to 24.1°C, and monthly rainfall rises from 75 mm to 100 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Johannesburg climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.3°C14.1°C | 14.1°C | 132 | 16.4 | 13.614 h |
| February | 24.1°C13.9°C | 13.9°C | 111 | 14.1 | 13.013 h |
| March | 22.8°C12.3°C | 12.3°C | 89 | 12.7 | 12.312 h |
| April | 20.4°C9.3°C | 9.3°C | 45 | 7.3 | 11.511 h |
| May | 18.4°C5.7°C | 5.7°C | 17 | 2.9 | 10.911 h |
| June | 16.1°C2.9°C | 2.9°C | 7.8 | 1.3 | 10.511 h |
| July | 16.3°C2.2°C | 2.2°C | 3.0 | 0.8 | 10.711 h |
| August | 19.4°C4.9°C | 4.9°C | 9.8 | 2.0 | 11.211 h |
| September | 23.4°C8.5°C | 8.5°C | 22 | 3.7 | 11.912 h |
| October, selected | 24.4°C10.9°C | 10.9°C | 75 | 10.7 | 12.713 h |
| November | 24.1°C12.3°C | 12.3°C | 100 | 14.0 | 13.413 h |
| December | 24.3°C13.7°C | 13.7°C | 138 | 18.0 | 13.714 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Alberton in OctoberSouth Africa · 11 kmHigh 25.6°C · Low 11.9°C · 75 mm rain
- Germiston in OctoberSouth Africa · 12 kmHigh 25.4°C · Low 11.8°C · 76 mm rain
- Randburg in OctoberSouth Africa · 13 kmHigh 25.6°C · Low 11.9°C · 61 mm rain
- Roodepoort in OctoberSouth Africa · 18 kmHigh 24.6°C · Low 11.0°C · 73 mm rain
- Tokoza in OctoberSouth Africa · 19 kmHigh 25.8°C · Low 12.0°C · 76 mm rain
- Soweto in OctoberSouth Africa · 20 kmHigh 25.1°C · Low 11.7°C · 73 mm rain
- Midrand in OctoberSouth Africa · 26 kmHigh 25.4°C · Low 11.8°C · 61 mm rain
- Benoni in OctoberSouth Africa · 28 kmHigh 25.2°C · Low 11.7°C · 76 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Johannesburg) is explained once on the Johannesburg year overview and on the Sources, method and limits page.
Alberton lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.