Last updated: August 1, 2025
Being aware of the UV Index is crucial for residents of Albertina, South Africa, where the sun can be a formidable presence. Understanding UV levels helps you take necessary precautions to prevent sunburn and protect your skin health, especially during the midday hours when the risk is highest. With a BSk climate, the region typically experiences long, sunny days which can lead to increased UV exposure. Knowing the UV Index can empower you to enjoy the beautiful South African outdoors while safeguarding your skin from potential damage.
The UV Index throughout the day reveals a dynamic pattern of sun intensity. In the morning, it starts off low, peaking at 1 by 09:00. As the sun climbs higher, we see a steady increase with the index reaching 3 by 11:00. The highest point occurs from 12:00 to 13:00, where the UV Index hits a robust 4, indicating a need for sun protection during those hours. Following this peak, the index gradually declines, returning to 2 at 15:00, and then dropping back down to 0 by 18:00, marking the end of significant UV exposure for the day. Plan your outdoor activities accordingly to stay safe under the sun!
| 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 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal fluctuations, with extremely high values in the winter months of January and December, reaching 14 and leading to a burn time of just 10 minutes. February and March also show extreme levels at 13 and 11, requiring similar caution. As the seasons transition into spring, the UV Index decreases, with April registering a high level of 7 and a longer burn time of 25 minutes. The summer months are characterized by a moderate UV Index, with values from 3 to 5 from June to August, leading to burn times of 30 minutes. However, as September arrives, the index rises sharply again to 9, indicating very high risk, which is followed by a return to extreme levels in October (11) and November (12). Visitors and residents are strongly advised to protect their skin during high-risk months—notably from January to March and October to December—by using sunscreen, wearing protective clothing, and seeking shade, particularly during peak sunlight hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Albertina | 14 | 13 | 11 | 7 | 5 | 3 | 4 | 5 | 9 | 11 | 12 | 14 |
| 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 |