Johannesburg Weather Forecast
Johannesburg weather: 70°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Johannesburg is a city in South Africa. Johannesburg is known for Apartheid Museum and safari gateway. It has a population of about 5.8 million.
Right now it is 70°F (21°C) in Johannesburg with clear sky. It feels like 63°F. Today runs from 52°F to 74°F. Chance of precipitation is 0%. Sightseeing conditions score 9.6/10 - excellent - go now.
The best time to visit Johannesburg is January, May, August, September, October and November. The climate is Mediterranean. March, June and December tend to be the least comfortable months. February is the warmest month with average highs near 79°F, while July is the coldest with lows near 41°F.
The closest major airport is O. R. Tambo International Airport (JNB), about 13 mi away.
In plain terms. Today is slightly warmer than average for August. The forecast high of 74°F is 3.8°F above the 70°F typical for this month. The best window to be outside is roughly 10 AM to 1 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Johannesburg today at 10/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Active alerts for Johannesburg
Derived from the forecast. No official alert feed is wired for this country yet.
Weather in Johannesburg right now
Source: Open-Meteo. Updated 5:35 PM, Aug 25 local time.
See the Johannesburg forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
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 | ☁️ Overcast | 68° / 48° | 0% | 9 mph | 7 |
| Fri, Aug 28 | ☁️ Overcast | 69° / 48° | 0% | 7 mph | 7 |
| Sat, Aug 29 | ☀️ Clear sky | 68° / 48° | 0% | 7 mph | 7 |
| Sun, Aug 30 | ☁️ Overcast | 68° / 48° | 0% | 8 mph | 7 |
| Mon, Aug 31 | 🌦️ Light drizzle | 72° / 53° | 24% · 0,0 in | 8 mph | 7 |
| Tue, Sep 1 | 🌦️ Light drizzle | 73° / 54° | 22% · 0,1 in | 10 mph | 7 |
| Wed, Sep 2 | 🌦️ Light drizzle | 71° / 52° | 12% · 0,0 in | 9 mph | 6 |
| Thu, Sep 3 | 🌦️ Light drizzle | 69° / 42° | 25% · 0,0 in | 19 mph | 7 |
| Fri, Sep 4 | ☀️ Clear sky | 56° / 35° | 24% | 14 mph | 7 |
| Sat, Sep 5 | ☀️ Clear sky | 60° / 39° | 18% | 6 mph | 8 |
| Sun, Sep 6 | ☀️ Clear sky | 66° / 44° | 13% | 5 mph | 8 |
| Mon, Sep 7 | ☀️ Clear sky | 68° / 47° | 8% | 6 mph | 8 |
| Tue, Sep 8 | ☀️ Clear sky | 73° / 53° | 2% | 4 mph | 8 |
| Wed, Sep 9 | ☀️ Clear sky | 76° / 59° | 12% | 6 mph | 8 |
Climate in Johannesburg month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 79° | 59° | 3,0 in | ★★★★☆ |
| February | 79° | 60° | 3,6 in | ★★★★☆ |
| March | 75° | 58° | 3,7 in | ★★★★☆ |
| April | 69° | 52° | 3,2 in | ★★★★☆ |
| May | 67° | 47° | 0,6 in | ★★★★☆ |
| June | 62° | 42° | 0,4 in | ★★★★☆ |
| July | 64° | 41° | 0,1 in | ★★★★☆ |
| August | 70° | 45° | 0,3 in | ★★★★☆ |
| September | 77° | 51° | 0,8 in | ★★★★★ |
| October | 78° | 53° | 1,7 in | ★★★★☆ |
| November | 77° | 56° | 3,1 in | ★★★★☆ |
| December | 78° | 59° | 4,4 in | ★★★★☆ |
Climate type: Mediterranean. Source: Open-Meteo archive (ERA5).
Weather map for Johannesburg
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Johannesburg
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Johannesburg
Go in January, May, August, September, October and November. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: March, June and December - expect the least comfortable mix of heat, cold or rain.
Weather by airport in Johannesburg
1 airports mapped in this atlas
Explore Johannesburg
Every topic we hold for this place, and the same topic for the places around it.
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 70°F (21°C) with clear sky. Humidity is 21% and wind is 7 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 5:35 PM.
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 5:35 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
