ISO 24444 / ISO 24443 EU COLIPA and SANS 1557 Verified Broadspectrum Sunscreens
Weather in Johannesburg, South Africa
Get accurate, up-to-date weather information for Johannesburg, including current conditions, hourly forecasts, and 6-day outlook. Plan your outdoor activities with reliable weather data and UV protection guidance.
Current Conditions
Temperature: 16.7°C
Feels like: 14.6°C
Description: Partly cloudy
Humidity: 64%
Wind: 10.8 km/h ↑ NNE
Moon Phase: 
Waxing Gibbous
Sun Protection for Johannesburg Today
UV Index: 9 · Very High (now 7, today's peak 9)
Recommended: SPF 50+ — Extra protection. SPF 50+, avoid sun 10am-4pm; reapply every 2 hours.
Shop SPF 50+ sunscreen →Johannesburg — Sun & UV Today
☁️ Today’s outlook
Mild, cloudy. Peak UV 9 Very high — take cover up, seek shade & use broad-spectrum SPF 50+.
Shop SPF 50+ sunscreen →☀️ UV index through the day
☀️ Your skin & today’s sun — tap your skin type
🌡️ Temperature through the day
▬ temperature ▔▔ feels like
📆 7-day outlook
Today
☁️
20°/11°
💧 0%
BEST DAY
Mon
☁️
19°/12°
💧 33%
Tue
🌦️
22°/12°
💧 40%
Wed
🌧️
22°/12°
💧 51%
Thu
🌦️
24°/12°
💧 26%
Fri
🌦️
23°/13°
💧 24%
Sat
🌤️
23°/14°
💧 20%
🌫️ Air quality now
75
US AQI
Moderate
Acceptable; unusually sensitive people should watch for symptoms.
PM2.5 17.4 µg/m³ · PM10 17.8 µg/m³ · NO₂ 13
Air quality (PM2.5, PM10, US AQI): Open-Meteo / CAMS. Pollen shown where forecast data is available.
Hourly UV, temperature & 7-day data: Open-Meteo. This is general sun-safety guidance, not a personal safe-exposure time — UV damages skin before any visible sunburn, so protect from UV 3 upward (WHO/EPA UV Index guidance).
Today and Tomorrow's Forecast
TodayAfternoonTemperature: 20.1°C Description: Partly cloudy Wind: 6.8 km/h ↑ N Evening Temperature: 16.2°C Description: Partly cloudy Wind: 4.7 km/h ↗ NE |
TomorrowMorning Temperature: 14.5°C Description: Cloudy Wind: 9.0 km/h ↑ NNE AfternoonTemperature: 18.7°C Description: Cloudy Wind: 5.0 km/h ↙ SW EveningTemperature: 15.4°C Description: Partly cloudy Wind: 3.6 km/h ↓ S |
Cloud Cover Movement Over Southern Africa
Week's Weather Outlook
Seven days from today — forecast by met.no (Norwegian Meteorological Institute), updated Sun 10:52 SAST. Highs and lows are the day's hourly extremes; the icon and wind are the midday values.
Today, Sep 20
High: 20.3°C (rest of today) Low: 12.1°C Partly cloudy Wind: 6.8 km/h ↑ N Moon: |
Tomorrow, Sep 21
High: 19.0°C Low: 12.1°C Cloudy Wind: 5.0 km/h ↙ SW Moon: |
Tue, Sep 22
High: 21.7°C Low: 12.1°C Fair Wind: 10.4 km/h ↑ N Moon: |
Wed, Sep 23
High: 21.3°C Low: 11.8°C Rain showers Wind: 6.1 km/h ↖ NNW Moon: |
Thu, Sep 24
High: 23.9°C Low: 12.4°C Partly cloudy Wind: 7.2 km/h ↓ S Moon: |
Fri, Sep 25
High: 23.6°C Low: 12.8°C Fair Wind: 10.1 km/h ↑ NNW Moon: |
Sat, Sep 26
High: 25.3°C Low: 12.7°C Clear sky Wind: 19.8 km/h ↖ NW Moon: |
South African Temperature Maps
Minimum Temperatures: South Africa
Maximum Temperatures: South Africa
Live SA temperature maps generated from met.no (Norwegian Meteorological Institute) data, refreshed every few hours.
Storm & Rain around Johannesburg
A ~220 × 240 km live panel: NOAA satellite rain rate in mm/h with contours, Meteosat-12 cloud tops and lightning, one frame every 10 minutes, one-hour loop. Latest frame Sun 20 Sep 10:20 SAST · heaviest rain in the panel 5.9 mm/h · no lightning within 30 km in the last five minutes.
No rain reported at Johannesburg itself this hour (forecast model and satellite point estimate).
Storm arrivals (next 90 min) — from the 10:20 frame, positions advanced to 10:45. Experimental: storms grow, decay and turn. Official warnings: South African Weather Service.
No storm or rain cell is heading for Johannesburg or its surrounds in the next 90 minutes.
Nowcast — each storm cell's motion arrow and its projected outline 30 (solid) and 60 minutes (dotted) ahead.
Precipitation estimates: NOAA/NESDIS Enterprise Rain Rate (RRQPE). Cloud tops and lightning: EUMETSAT Meteosat-12. This panel shows observations, not warnings; official severe-weather warnings are issued by the South African Weather Service.
South Africa Live Storm & Rain Map
Live storm and rain map — NOAA satellite rain rate (mm/h), Meteosat-12 cloud tops and lightning, updated every 10 minutes, with a 60-minute storm nowcast and arrival times. Open the full map →
Weather & UV Protection
While checking the weather forecast is important for planning outdoor activities, it's also crucial to consider UV exposure, which can be high even on cloudy days. Here are some sun protection tips based on weather conditions:
- Sunny days: Use SPF 30-50+ sunscreen, wear a hat, sunglasses, and seek shade during peak hours (10am-4pm)
- Cloudy days: Up to 80% of UV radiation can penetrate cloud cover - continue to use SPF 30+ sunscreen
- Rainy days: UV rays can still reach you through clouds - apply sunscreen to exposed skin when outdoors
- Windy conditions: Wind can reduce the sensation of sun exposure, potentially leading to unexpected sunburn
Check UV Levels & Sun Protection
For current UV index information and specialized sun protection products:
South Africa UV Index Sunscreen Products