Last updated: June 2, 2025
Understanding the UV Index is vital for residents of Wartburg, South Africa, where the temperate Cfb climate offers unique sun exposure challenges. Regularly checking UV levels not only helps in preventing sunburn but also plays a crucial role in protecting skin health over time. With peak UV indices reaching up to 5 at midday, it's essential to stay informed about when to seek shade and wear protective gear, especially in the summer months when sun exposure risks can be higher. By being UV-aware, you can enjoy the sunny beauty of Wartburg while safeguarding your skin's well-being.
The UV Index throughout the day shows a steady rise in intensity, peaking at 12:00 PM with a value of 5—a clear indicator for sun protection. Mornings start off gentle with an index of 1 at 07:00 and 08:00, climbing to 2 by 09:00. As the sun reaches its zenith, the index increases to 3 at 10:00 and escalates to 4 by 11:00. However, the intensity peaks at 12:00 PM before gradually declining in the afternoon; it slips back to 4 at 1:00 PM, then 3 at 2:00 PM, 2 at 3:00 PM, and finally returns to a safer 1 by 4:00 PM. By 5:00 PM, the UV exposure is negligible at 0, allowing for a safe evening outside. Keeping an eye on these UV levels can ensure you enjoy the sunshine while staying protected!
| 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 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 4 | moderate | 30 min |
| 14:00 | 3 | moderate | 30 min |
| 15:00 | 2 | low | 45 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 0 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, with high-risk months typically occurring from January to March and then again in October and November. These months showcase extreme UV levels, reaching a peak of 15 in January and December, with a minimal burn time of just 10 minutes. The spring and fall months show a shift to very high categories in April, September, and significant rising levels in February and March. By May to August, while still requiring precautions, the UV Index drops to moderate and high levels, with burn times increasing to 25-30 minutes. It is crucial for both residents and visitors to take protective measures during the highest UV periods by wearing appropriate sunblock, protective clothing, and seeking shade to mitigate the risk of sunburn and long-term 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 |
| Wartburg | 15 | 14 | 12 | 9 | 6 | 4 | 5 | 7 | 10 | 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 |