Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors in Tupiza, Bolivia, where the high-altitude climate and clear skies can lead to increased sun exposure throughout the year. Awareness of UV levels is crucial not only for preventing sunburn but also for maintaining long-term skin health, as prolonged exposure can lead to serious skin conditions. With the UV Index peaking at 10 during midday, it’s important to take protective measures during those hours when UV radiation is most intense. Given Tupiza's distinct BSk climate, where sunny days are the norm, knowing how to manage UV exposure can help you enjoy the vibrant outdoors safely.
The UV Index throughout the day showcased a dynamic pattern, peaking sharply during the midday hours. Beginning at a low of 1 at 07:00, it steadily climbed, reaching 2 by 08:00. A significant surge occurred between 09:00 and 12:00, where it soared to an impressive 10 at its highest, indicating very high exposure risk. The intensity began to wane post-lunch, dropping to 8 at 14:00, and declining further to 5 and then 2 by late afternoon. As evening approached, the index fell to 1 at 17:00 and eventually settled at 0 after 18:00, signaling a retreat from the sun's harmful rays. If you’re planning outdoor activities, the peak hours, particularly between 11:00 and 13:00, call for protective measures!
| 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 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | 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 |
The UV Index data reveals significant seasonal changes in ultraviolet radiation throughout the year, with high-risk months occurring from January to April and November to December, where the UV Index consistently reaches extreme levels (18-19), resulting in a quick burn time of just 10 minutes. Even during May to September, values remain elevated, especially in August and September, which also feature extreme conditions with burn times of just 10 minutes. Visitors and residents are strongly advised to take precautions during these months by wearing protective clothing, applying broad-spectrum sunscreen, and limiting sun exposure, particularly during peak hours. Being proactive about UV safety can help mitigate the risks of skin damage during these high-intensity periods.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Santa Cruz de la Sierra UVI | 15 | 15 | 14 | 13 | 10 | 8 | 9 | 10 | 12 | 15 | 16 | 16 |
| Sucre UVI | 17 | 17 | 16 | 14 | 11 | 9 | 10 | 12 | 15 | 17 | 17 | 18 |
| Tupiza | 18 | 18 | 17 | 14 | 11 | 8 | 10 | 12 | 15 | 17 | 18 | 19 |
| Sacaba UVI | 17 | 18 | 17 | 15 | 12 | 10 | 10 | 13 | 15 | 17 | 18 | 19 |
| Cochabamba UVI | 18 | 18 | 17 | 15 | 12 | 10 | 11 | 13 | 16 | 18 | 18 | 19 |
| Oruro UVI | 19 | 19 | 17 | 16 | 13 | 10 | 11 | 14 | 16 | 19 | 19 | 19 |