Johannesburg weather in June
In June, Johannesburg has daytime highs averaging 16 °C, nights around 3.0 °C, with 1.3 wet days. Figures are 1991–2020 climate normals.
- 16.3°C Average high
- 3.0°C Average low
- 1.3days Wet days
- 8mm Rainfall
- 11h Daylight
Daily temperatures through June
How June develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 June | 16.7 °C | 3.7 °C | 5 % |
| 11–20 June | 16.0 °C | 2.7 °C | 6 % |
| 21–30 June | 16.1 °C | 2.7 °C | 3 % |
What to expect
| Measure | Typical June | Share of the month |
|---|---|---|
| Days above 25 °C | 0 of 30 | 0 % |
| Days above 30 °C | 0 of 30 | 0 % |
| Days below 0 °C | 3.2 of 30 | 11 % |
| Days with more than 1 mm rain | 1.3 of 30 | 4 % |
Conditions in June
| Measure | Average |
|---|---|
| Mean temperature | 9.2 °C |
| Record high (1991–2020) | 23 °C |
| Record low (1991–2020) | -4.5 °C |
| Relative humidity | 54 % |
| Wind speed | 16 km/h |
| Cloud cover | 15 % |
Where Johannesburg ranks in June
| Ranking | Position | Value |
|---|---|---|
| The coolest places in Africa in June | 3rdof 50 | 16 °C |
June compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| April | 20.6 °C | 45 mm | 37 % |
| May | 18.6 °C | 17 mm | 21 % |
| June | 16.3 °C | 8 mm | 15 % |
| July | 16.4 °C | 3 mm | 12 % |
| August | 19.5 °C | 10 mm | 16 % |
See all twelve months for Johannesburg
- June is the 12th warmest month here.
- It is the 2nd driest month of the year.
- It ranks 2nd for least cloud cover.
- Days last about 11 hours from sunrise to sunset.
- It rains on 1.3 of 30 days — 4 % of the month.
- Nights are about 13 °C cooler than the middle of the day.
- The hottest June day on record since 1991 reached 23 °C, 6.7 °C above the usual daytime high.
Nearby destinations in June
| Destination | Avg high | Wet days |
|---|---|---|
| Johannesburg | 16 °C | 1.3 |
| Soweto | 17 °C | 1 |
| Benoni | 17 °C | 1 |
| Thembisa | 17 °C | 1 |
| Krugersdorp | 16 °C | 1 |
| Centurion | 18 °C | 1 |
| Westonaria | 17 °C | 1 |
| Evaton | 18 °C | 1 |
| Pretoria | 19 °C | 1 |
QuestionsJune in Johannesburg, answered
How warm is Johannesburg in June?
Daily highs average 16 °C and nights fall to about 3.0 °C, a spread of 13 °C between afternoon and dawn. That makes June the 11th warmest month of the year here.
Does it rain much in Johannesburg in June?
June averages 8 mm of rain, spread over about 1 of the 30 days — 4 % of the month. Cloud cover averages 15 % of the sky.
How long are the days in June?
Johannesburg averages 11 hours between sunrise and sunset in June. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.