Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Otjiwarongo, Namibia—a region characterized by its warm BSh climate. Knowing the UV levels can significantly aid in preventing sunburn and promoting long-term skin health. With peak UV exposure often hitting 8 around midday, it's essential to stay informed about daily UV fluctuations to protect yourself from harmful effects associated with overexposure to the sun. Awareness of UV trends in Otjiwarongo ensures a safer outdoor experience, allowing you to fully enjoy the beautiful Namibian landscape while safeguarding your skin.
As the sun rises and the day unfolds, the UV Index climbs steadily, peaking at 8 between 1 PM and 2 PM—a clear signal to take precautions against sun exposure. Beginning the morning at a low 0 at 7 AM, it nudges up to 1 by 8 AM. By 10 AM, UV levels reach 4, and the midday sun brings the index to 7 at noon. It's during these hours that being sun-smart is essential, as unprotected skin can burn quickly. As the afternoon rolls in, a gradual decline sets in; the index drops to 5 at 3 PM, continues down to 2 by 4 PM, and finally settles at 1 as the sun sets. By 7 PM, the UV Index returns to 0, signaling a retreat of the sun's harmful intensity. Stay vigilant during peak hours to protect your skin and enjoy the sunny day!
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 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 | 2 | low | 45 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 |