Johannesburg Weather Forecast
Johannesburg weather: 67°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Johannesburg
Derived from the current forecast window - not an official warning.
Peak gusts of 57 mph and 0 thunderstorm days in the next 16 days.
Wettest single day forecast at 0,1 in, 0,1 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
Active alerts for Johannesburg
Derived from the forecast. No official alert feed is wired for this country yet.
16-day forecast for Johannesburg
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Tue, Aug 25 | ☀️ Clear sky | 74° / 52° | 0% | 8 mph | 7 |
| Wed, Aug 26 | ☁️ Overcast | 75° / 51° | 0% | 9 mph | 7 |
| Thu, Aug 27 | 🌦️ Light drizzle | 67° / 50° | 4% · 0,0 in | 8 mph | 7 |
| Fri, Aug 28 | ☁️ Overcast | 70° / 48° | 0% | 8 mph | 7 |
| Sat, Aug 29 | 🌤️ Mainly clear | 69° / 48° | 0% | 7 mph | 7 |
| Sun, Aug 30 | ☁️ Overcast | 67° / 48° | 3% | 10 mph | 7 |
| Mon, Aug 31 | 🌦️ Light drizzle | 72° / 56° | 22% · 0,0 in | 8 mph | 7 |
| Tue, Sep 1 | 🌦️ Light drizzle | 73° / 54° | 17% · 0,1 in | 10 mph | 7 |
| Wed, Sep 2 | 🌦️ Light drizzle | 71° / 52° | 19% · 0,0 in | 9 mph | 7 |
| Thu, Sep 3 | 🌦️ Light drizzle | 69° / 42° | 29% · 0,0 in | 19 mph | 7 |
| Fri, Sep 4 | ☀️ Clear sky | 56° / 35° | 25% | 14 mph | 7 |
| Sat, Sep 5 | ☀️ Clear sky | 60° / 39° | 9% | 6 mph | 8 |
| Sun, Sep 6 | ☀️ Clear sky | 66° / 44° | 8% | 5 mph | 8 |
| Mon, Sep 7 | ☀️ Clear sky | 68° / 47° | 12% | 6 mph | 8 |
| Tue, Sep 8 | ☀️ Clear sky | 73° / 53° | 6% | 4 mph | 8 |
| Wed, Sep 9 | 🌦️ Light drizzle | 78° / 60° | 6% · 0,0 in | 10 mph | 8 |
What this means for Johannesburg
Today is slightly warmer than average for August. The forecast high of 74°F is 4.1°F above the 70°F typical for this month.
Rain is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Southern Hemisphere, so peak summer falls in December to February.
The gap between the warmest and coldest month averages 50°F.
See the Johannesburg forecast by time range
Johannesburg weather - more answers
Explore Johannesburg
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Weather for related places
Frequently asked questions
Where is Johannesburg?
Johannesburg is a city in South Africa. Its coordinates are -26.2041, 28.0473. It lies in Africa.
What is the weather like in Johannesburg right now?
It is currently 67°F (20°C) with clear sky. Humidity is 24% and wind is 4 mph.
When is the best time to visit Johannesburg?
January, May, August, September, October and November offer the most comfortable conditions in Johannesburg, which has a Mediterranean climate. March, June and December are usually the hardest months for outdoor plans.
What time zone is Johannesburg in?
Johannesburg observes Africa/Johannesburg (UTC+02:00). The local time is 11:02 AM.
How many people live in Johannesburg?
Johannesburg has a population of approximately 5.8 million.
What is the nearest airport to Johannesburg?
The closest airports are O. R. Tambo International Airport (JNB), 13 mi away.
What places are in Johannesburg?
Johannesburg covers 1 places in this atlas, including O. R. Tambo International Airport.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-world) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 25, 2026 at 11:02 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
