Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors of Francistown, Botswana, especially given its semi-arid climate and high sun exposure. The UV Index indicates the strength of ultraviolet (UV) radiation from the sun, which can significantly affect skin health and lead to sunburn if proper precautions aren’t taken. With peak UV levels reaching as high as 9 around midday, awareness of these indices can help prevent skin damage and promote overall well-being. As you explore this vibrant city, staying informed about UV levels will ensure you enjoy the beautiful outdoors safely while protecting your skin from harmful effects.
The UV index throughout the day exhibits a dynamic rise and fall, reflecting the sun's intensity. At 07:00, the index starts low at 1, gradually climbing to 2 by 08:00. By 09:00, it reaches a moderate 4, but excitement peaks at 12:00 with a striking 9, indicating a high risk for unprotected skin. The intensity tapers down after this noon pinnacle—falling to 8 at 13:00, then 6 at 14:00. As afternoon turns to evening, the index diminishes significantly, settling at 4 by 15:00, dropping to 2 at 16:00, and finally winding down to 1 by 17:00. As the sun sets, the index recedes completely, hitting 0 by 18:00, leaving a tranquil end to the day. Remember, during peak times, sun protection is crucial!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels in the region exhibit significant seasonal fluctuations. The high-risk months for UV exposure are from January to April, where the UV Index ranges between 12 and 17, all categorized as extreme, with a very short burn time of just 10 minutes. September to December also presents high risk, particularly in September and October when the UV Index remains high, leading to potential burns in just 10 minutes. Visitors and residents should take precautions during these high-risk months by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially during peak sunlight hours. In contrast, May to July, while still concerning, see a decrease in risk with UV levels classified as very high or high, allowing for slightly longer safe exposure times of 15 to 25 minutes, but caution is still advised.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gaborone UVI | 16 | 15 | 13 | 11 | 8 | 6 | 6 | 9 | 11 | 13 | 14 | 16 |
| Molepolole UVI | 16 | 15 | 13 | 11 | 8 | 6 | 6 | 9 | 11 | 13 | 14 | 16 |
| Selebi-Phikwe UVI | 16 | 15 | 13 | 12 | 9 | 7 | 7 | 9 | 11 | 14 | 14 | 15 |
| Francistown | 17 | 16 | 14 | 12 | 9 | 7 | 7 | 10 | 11 | 14 | 14 | 15 |
| Maun UVI | 16 | 15 | 14 | 12 | 9 | 8 | 8 | 10 | 12 | 13 | 15 | 15 |