Weather

Johannesburg weather

Live rain radar, current conditions, an hour-by-hour outlook and a seven-day forecast for Johannesburg, with original writing about the city's climate from The Daily Johannesburg.

Today's briefing

**Weather for Johannesburg** It's a crisp 19 degrees right now, though it feels closer to 16 with the wind, and we're looking at a cool day ahead with a high of just 19 degrees and a low of 9 degrees tonight. The good news is there's virtually no chance of rain, though the UV index is at 5, so sunscreen is still worth having handy if you're spending time outdoors. Bundle up in layers and a light jacket, especially for the evening chill. The weekend stays dry but chilly, with Saturday reaching just 15 degrees and Sunday warming slightly to 17 degrees.

12°

Clear · feels like 10°

Today: 19° / 9°
Humidity: 73%
Wind: 5 km/h W
UV index: 0 · Low
Sunrise: 6:55 am
Sunset: 5:26 pm
Updated: 11:30 pm

Next 24 hours

Now
12°
0%
12am
12°
0%
1am
12°
0%
2am
11°
0%
3am
11°
0%
4am
11°
0%
5am
11°
0%
6am
10°
0%
7am
10°
0%
8am
12°
0%
9am
15°
0%
10am
16°
0%
11am
17°
0%
12pm
18°
0%
1pm
19°
0%
2pm
19°
0%
3pm
19°
0%
4pm
19°
0%
5pm
17°
0%
6pm
16°
0%
7pm
15°
0%
8pm
14°
0%
9pm
13°
0%
10pm
13°
0%

Live rain radar

Drag to pan, scroll the page over it

Animated rain radar via RainViewer (Bureau of Meteorology sources). Full BOM radar loop.

Seven-day forecast

Mon
Mainly clear
19° 9°
Rain 0%
Tue
Clear
19° 10°
Rain 0%
Wed
Partly cloudy
16° 8°
Rain 0%
Thu
Overcast
15° 4°
Rain 8%
Fri
Clear
15° 0°
Rain 0%
Sat
Clear
15° 4°
Rain 0%
Sun
Clear
18° 4°
Rain 0%

Air quality

120

Unhealthy for sensitive groups

US AQI

PM2.5: 177
PM10: 177
Ozone: 0

Air quality by Open-Meteo (CAMS), in µg/m³.

Sun and moon

Sunrise: 6:55 am
Sunset: 5:26 pm
Daylight: 10h 31m

Full moon

100% lit

From the weather desk

Johannesburg weather, explained

How to read the Johannesburg forecast

A good forecast is really three views at once. The current panel tells you what it feels like outside right now, which is what matters before you head out the door. The hourly strip is for planning the next part of your day: when the rain band arrives, when the wind picks up, when it is warm enough to walk. The seven-day outlook is for the week ahead, and it is most reliable in the first three or four days. Read it from the top down and you will almost always have what you need for Johannesburg.

What the UV index actually means

The UV index rates the strength of the sun's ultraviolet radiation on a simple scale. Below 3 is low and you can be outside safely without protection. From 3 to 7 is moderate to high, the point at which sunburn becomes likely within an hour, so a hat and sunscreen earn their keep. Above 8 is very high to extreme, and skin can burn in minutes around the middle of the day. The index peaks at solar noon, not at the hottest part of the afternoon, so the safest habit is to check the number rather than judge by the temperature.

Why the overnight low matters as much as the high

Daytime maximums get the headlines, but the overnight minimum shapes how the day actually feels. A cold night means a slow, crisp start and, on clear evenings, the chance of fog or frost before dawn. A mild night means the warmth carries over and the morning is comfortable from the outset. Clear skies let heat escape and push the low down; cloud cover traps it and keeps the night warmer. That is why two days with the same maximum can feel completely different depending on the night that came before.

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Weather data by Open-Meteo. The Daily Johannesburg is independent and not affiliated with any government weather agency.

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