Last updated: July 2, 2025
Understanding the UV Index in Krugersdorp, South Africa, is crucial for protecting your skin and overall health. With sunburn risk significantly increasing during peak hours, awareness of UV levels can guide you in making informed decisions about sun exposure. Krugersdorp's Cwb climate, characterized by its mild conditions, still presents notable UV exposure risks, particularly between 10 AM and 2 PM when the index reaches up to 6. By staying informed about daily UV variations, you can enjoy the outdoors while safeguarding your skin from harmful effects.
As the day unfolds, the UV Index begins to rise, peaking sharply around midday. From a gentle 1 at 7 AM, it escalates to a moderate 6 between 11 AM and 1 PM, signaling peak sun exposure. During these crucial hours, it's essential to protect your skin with sunscreen and wear appropriate clothing. As the afternoon progresses, the intensity wanes, dropping to 4 at 2 PM and further declining to 3 by 3 PM. By 4 PM, it returns to a safe 1, and finally settles to 0 after sunset, making late afternoon and evening hours ideal for outdoor activities without the risk of UV damage. Stay informed and enjoy the sun responsibly!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 4 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index experiences significant seasonal fluctuations, with extreme levels dominating the first half of the year. Notably, January to April show consistent UV Index readings of 16 to 13, indicating high risk for sunburn and necessitating cautious exposure management, with a brief burn time of just 10 minutes. The summer months of May to July witness a slight decrease, with UV levels dropping to a high category, allowing for a safer burn time of 25 minutes. However, August spikes again to 9, categorizing it as very high with a burn time of only 15 minutes. As the year transitions into September to November, UV levels again surge into the extreme category, reinforcing the need for vigilance as burn times revert to 10 minutes. Residents and visitors are advised to take necessary precautions, especially during high-risk months (January to April and September to November) by applying sunscreen, wearing protective clothing, and limiting sun exposure to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cape Town UVI | 14 | 13 | 11 | 8 | 5 | 3 | 4 | 6 | 9 | 11 | 12 | 14 |
| Durban UVI | 14 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 11 | 13 | 15 |
| Johannesburg UVI | 15 | 15 | 13 | 10 | 7 | 6 | 6 | 8 | 11 | 12 | 14 | 16 |
| Pretoria UVI | 16 | 15 | 13 | 10 | 7 | 6 | 6 | 9 | 11 | 13 | 14 | 16 |
| Soweto UVI | 16 | 15 | 13 | 11 | 7 | 6 | 6 | 8 | 11 | 13 | 15 | 16 |
| Krugersdorp | 16 | 16 | 13 | 11 | 7 | 6 | 6 | 9 | 11 | 13 | 14 | 16 |