Last updated: July 2, 2025
In Otjiwarongo, Namibia, understanding the UV Index is crucial for ensuring skin health and preventing sunburn. With its hot semi-arid climate, this region experiences significant UV exposure, particularly during midday hours when the sun’s rays can be at their strongest, peaking at a UV index of 8 from 1 PM to 2 PM. Being aware of these levels is essential not only for outdoor enthusiasts but for everyday activities, as even moderate UV exposure can lead to skin damage over time. Stay informed about the UV Index to protect yourself and your loved ones while enjoying the beautiful Namibian outdoors!
At 07:00, the UV index starts at a refreshing 0, indicating minimal sun exposure. As the day progresses, the index climbs steadily, reaching 1 by 08:00 and 2 by 09:00. The sun's intensity peaks at 13:00, hitting a high of 8, which signals the best time for sun protection. By 12:00, it reaches 7, making it crucial to stay shaded or wear sunscreen. The levels gradually decline after the peak, dropping to 5 by 15:00, then tapering off to 3 at 16:00. The evening hours bring relief, with the UV index falling back to 1 by 17:00, and finally returning to 0 at 19:00, marking the end of the sun's UV influence for the day. Remember to take care during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | 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 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV levels experience significant fluctuations, with the highest risks observed from January through April, where the UV Index reaches extreme levels (16-17) and a burn time of just 10 minutes. During this period, visitors and residents should take extra precautions, such as wearing protective clothing, applying sunscreen regularly, and seeking shade. As we transition into late spring and summer, May to August still presents very high UV Index levels (8-9), where a burn time increases slightly to 15 minutes. The risk remains considerable, so maintaining sun safety is essential. As autumn approaches in September and October, the UV Index rises again to extreme levels (13-14), necessitating continued vigilance. In November and December, the UV Index remains high (15-16), reinforcing the need for sun protection throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Swakopmund UVI | 14 | 14 | 12 | 11 | 8 | 6 | 6 | 8 | 11 | 12 | 13 | 14 |
| Walvis Bay UVI | 14 | 14 | 12 | 11 | 8 | 6 | 6 | 8 | 11 | 12 | 13 | 14 |
| Windhoek UVI | 16 | 17 | 14 | 12 | 9 | 7 | 7 | 10 | 12 | 14 | 15 | 16 |
| Rundu UVI | 17 | 17 | 15 | 13 | 10 | 8 | 8 | 10 | 12 | 12 | 15 | 15 |
| Otjiwarongo | 16 | 17 | 14 | 12 | 9 | 8 | 8 | 10 | 13 | 14 | 15 | 16 |
| Oshakati UVI | 17 | 17 | 16 | 13 | 10 | 9 | 9 | 11 | 13 | 14 | 15 | 16 |