Very high UV
SatUV index peaks near 10. Burn time under 15 minutes.
Very high UV
SunUV index peaks near 9. Burn time under 15 minutes.
Very high UV
MonUV index peaks near 9. Burn time under 15 minutes.
Poor air quality
Air quality index 122. Sensitive groups take care.
Johannesburg Weather
21°
Partly cloudy
Feels like 21°
22°
11°
today's high / low
100
Perfect
Outdoor comfort right now
It is 21°C and partly cloudy in Johannesburg. Nothing wet on the radar for the next 24 hours. Tomorrow: light rain, high 19°C.
- Pressure falling steadily 1025 hPa
- 48h+ since rain
- Wind 4 km/h NNE
- Humidity 49%
- Cloud 26%
- UV peak 10
- Rain chance 0%
Next 48 hours
Scroll sideways — or pick a day below.
Now
17
12pm
11
1pm
10
2pm
10
3pm
11
4pm
12
5pm
13
6pm
13
7pm
12
8pm
11
9pm
9
10pm
8
11pm
7
12am
Sun
8
1am
8
2am
10
3am
13
4am
15
5am
16
6am
18
7am
19
8am
20
9am
19
10am
18
11am
16
12pm
15
1pm
14
2pm
14
3pm
13
4pm
12
5pm
12
6pm
12
7pm
10
8pm
9
9pm
48%
10
10pm
48%
13
11pm
48%
14
12am
Mon
48%
15
1am
48%
15
2am
48%
14
3am
7%
14
4am
7%
13
5am
7%
13
6am
7%
13
7am
7%
13
8am
7%
13
9am
19%
14
10am
19%
14
Conditions in detail
-
Feels like
21°
About what it looks like
-
Dew point
6°
Dry and pleasant
-
Wind
4 km/h
Gusting 13 km/h from NNE
-
Pressure
1025 hPa
Falling steadily
-
Visibility
10 km
Clear
-
UV index
9
Peaks at 10 today
-
Cloud cover
26%
—
-
Precipitation today
0.0 mm
None expected
Air quality
US AQI
122
Unhealthy for sensitive groups
- PM2.5 11 µg/m³
- PM10 11 µg/m³
- Ozone 128 µg/m³
- NO₂ 5 µg/m³
Next 14 days
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Live radar
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Best time to…
Scored hour by hour across the next two days.
-
Walk the dog
100Sat 11am–10am
Mild, no downpours, no ice
-
Garden work
100Sun 6am–9pm
Mild and dry, sun optional
-
Line-dry laundry
100Sun 6am–8pm
Dry air plus a working breeze
-
Golden-hour photos
100Sat 1pm–6pm
Scattered cloud catches the light
-
Ride a bike
99Sat 11am–10am
Wind matters more than temperature
-
Go for a run
98Sat 2pm–10am
Cool, calm and dry
-
Patio or BBQ
92Sat 11am–5am
Warm, dry, and not too breezy
-
Stargazing
80Sat 7pm–5am
Clear, dark and calm
Sun & moon
Sunrise
5:45 am
Sunset
6:08 pm
- Day length12h 23m
- Golden hour5:13 pm–6:08 pm
Last quarter
54% illuminated
Full moon in 23 days
Stargazing tonight
Marginal · 54/100
Clearest around 2am at 24% cloud.
Almanac
Historical records for this location are still loading, or unavailable.
Johannesburg weather questions, answered
- Will it rain in Johannesburg today?
- No — the next 24 hours in Johannesburg look dry, with the chance of precipitation peaking at 0%.
- How warm does it get in Johannesburg today?
- Johannesburg reaches a high of 22°C and drops to 11°C overnight. Right now it is 21°C and feels like 21°C.
- What is the best time to be outside in Johannesburg today?
- 4pm looks like the pick — 22°C, partly cloudy, wind 12 km/h. Outdoor comfort scores 100 out of 100 (perfect).
- What is the weather in Johannesburg tomorrow?
- Light rain, with a high of 19°C and a low of 12°C — +2.6° cooler than today. Chance of precipitation peaks at 48%.
- What time is sunrise and sunset in Johannesburg?
- The sun rises at 5:45 am and sets at 6:08 pm, giving 12h 23m of daylight.
About this Johannesburg forecast
Updated 2026-10-03 10:16 UTC, and refreshed automatically every few minutes. Forecast data is provided by Visual Crossing; radar frames from RainViewer; the 20-year normals and records from the ERA5 reanalysis archive. No national weather service publishes point alerts here, so only computed watches are shown.
Watches labelled computed are worked out on this site from forecast thresholds and are not official warnings — always defer to your national weather service. Need help reading a number? See the sourced weather guide.
Weather near Johannesburg
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