Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Standerton, South Africa, where the climate can lead to varying levels of sun exposure throughout the year. Being aware of UV levels helps in preventing sunburn and safeguarding your skin health, especially during peak hours when the index rises significantly. In Standerton's temperate climate, particularly around noon when the UV Index can reach as high as 6, the risk of overexposure increases. Staying informed about these levels empowers you to enjoy the outdoors while taking the necessary precautions to protect yourself and your loved ones from harmful UV rays.
The UV Index throughout the day presents an interesting fluctuation, starting off quite low with a maximum of 1 at both 07:00 and 08:00. As the sun rises higher, the intensity increases sharply, peaking at 6 from 11:00 to 13:00. This is the critical time to protect your skin, as a UV Index of 6 indicates a moderate risk of harm from unprotected sun exposure. The afternoon sees a gradual decline, with numbers dropping back to 2 by 15:00 and returning to 1 by 16:00 and 17:00. Finally, as the day comes to a close, the UV Index falls to 0 by 18:00 and remains there through the evening, reminding us that while the sun's rays can be strong during the day, they also retreat as the sun sets.
| 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 | 2 | low | 45 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 |
Throughout the year, the UV Index exhibits significant seasonal changes, peaking during the winter and early spring months. January through March and from September to November consistently show extreme exposure levels with a dangerously high UV Index ranging from 13 to 16, necessitating a rapid burn time of just 10 minutes. In contrast, the summer months of May through July present a relatively lower but still high exposure risk (UV Index of 6 to 7), allowing slightly longer safe exposure times of 25 minutes. However, it is essential to remain vigilant, as August sees a jump to a very high category with a UV Index of 9, reducing burn time to 15 minutes. To ensure safety, residents and visitors are advised to take precautions—especially from January to March and September to November, when UV levels are at their most hazardous. Always wear protective clothing, apply sunscreen, and seek shade during peak hours to mitigate risks associated with intense sunlight.
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 |
| Standerton | 15 | 15 | 13 | 11 | 7 | 6 | 6 | 9 | 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 |