Monday, October 19, 2026 · South Africa
Skin weather in Johannesburg UV index & humidity today
What today’s weather in Johannesburg does to your skin – based on current forecast data for UV, humidity and air quality.
Updated Oct 19, 2026, 10:10 AM local time
Today · Temperature12 to 27 °C
Low and high-
UV index
9.1
very high
Peak UV index today: 9.1 – very high.
Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
-
Humidity
45%outdoors
balanced
Average humidity today: 45%.
Balanced humidity – your usual routine works well.
-
Pollen
–
No pollen forecast is available for this region.
-
Air quality
60EAQI
moderate
European Air Quality Index up to 60 – moderate. Fine dust (PM2.5) averages 9.4 µg/m³.
Fine dust settles on the skin – cleanse thoroughly but gently in the evening.
Tomorrow
- 7 to 25 °C
- UV 9.3 · very high
- 36% · dry
- Air quality: poor
Skin climate in Johannesburg through the year
When the air in Johannesburg is driest and when the sun is strongest – based on climate data from recent years.
- Indoor air in Johannesburg is driest in July: heated to 21 °C, humidity indoors drops to around 22%.
- From May to August, the average daily temperature stays below 15 °C – the time when heating is usually on.
- From August to April, the midday sun climbs higher than 45° – your shadow is then shorter than you are. According to the WHO shadow rule, UV is then usually high.
- December brings the most sunshine, with around 339 hours.
| Month | Sunshine | Midday sun | Humidity outdoors | Indoors when heated | Avg. high |
|---|---|---|---|---|---|
| Jan | 338 h | 85° | 72% | – | 24.6 °C |
| Feb | 297 h | 77° | 74% | – | 24.3 °C |
| Mar | 313 h | 67° | 71% | – | 23.2 °C |
| Apr | 285 h | 54° | 68% | – | 20.8 °C |
| May | 296 h | 45° | 61% | 33% | 18.8 °C |
| Jun | 281 h | 40° | 56% | 24% | 16.5 °C |
| Jul | 296 h | 42° | 49% | 22% | 16.6 °C |
| Aug | 309 h | 50° | 44% | 23% | 20 °C |
| Sep | 319 h | 62° | 43% | – | 23.9 °C |
| Oct | 338 h | 73° | 52% | – | 25.1 °C |
| Nov | 324 h | 83° | 65% | – | 24.7 °C |
| Dec | 339 h | 87° | 71% | – | 24.8 °C |
Indoors when heated = humidity when outdoor air is warmed to 21 °C (only months with a daily average below 15 °C). Midday sun = sun angle in mid-month.
Frequently asked questions
What is the UV index in Johannesburg today?
Today (October 19) the UV index in Johannesburg reaches up to 9.1 – very high. Very high UV: the WHO advises avoiding the midday sun and reapplying sun protection regularly.
How dry is the air in Johannesburg today?
Average humidity today: 45%. Balanced humidity – your usual routine works well.
When is the air driest in Johannesburg?
Indoor air in Johannesburg is driest in July: heated to 21 °C, humidity indoors drops to around 22%. From May to August, the average daily temperature stays below 15 °C – the time when heating is usually on.
When is UV strongest in Johannesburg?
From August to April, the midday sun climbs higher than 45° – your shadow is then shorter than you are. According to the WHO shadow rule, UV is then usually high. December brings the most sunshine, with around 339 hours.
Your skin weather, every morning.
Lumée reads UV, humidity, pollen and air quality for your location and turns them into skincare that fits this exact day.
Skin weather nearby
All cities →Data: WDTEC GmbH’s own weather servers – temperature, UV index and humidity from weather models, air quality and pollen from the Copernicus Atmosphere Monitoring Service (CAMS). Ratings: UV per WHO, air quality per European Air Quality Index, pollen per NAB. Skincare tips are general recommendations and do not replace medical advice.