Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Bermejo, Bolivia, where the sun's intensity can lead to significant skin health risks. With a Cwa climate that features both sunny and dry conditions, UV levels can peak, making awareness essential for sunburn prevention and maintaining overall skin health. At midday, for instance, UV Index levels can soar to 7, indicating a very high risk of harm from unprotected sun exposure. By staying informed about the daily UV Index, you can make smart choices about sun safety, ensuring a healthy and enjoyable experience under the Bolivian sun.
As the sun rises, the UV Index begins at a low 0 at 07:00, indicating minimal risk for sun exposure. By 08:00 and 09:00, it gradually ticks up to 1, maintaining a low level. The intensity climbs to 2 by 10:00, but it’s not until 11:00 that we see a significant increase, reaching a moderate 4. The peak UV Index, a striking 7, occurs between 13:00 and 14:00, suggesting high exposure risk—perfect conditions to apply sunscreen and seek shade. As the afternoon rolls on, the values dip to 6 at 15:00 and then decrease further, falling back to 4 at 16:00, before tapering to lower levels of 2 by 17:00, and finally returning to a safe 1 by 18:00. The day closes out at 19:00 with a UV Index of 0, marking a gentle end to sun-related concerns.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 2 | low | 45 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV exposure in this region experiences significant seasonal changes. The months of January to April see an extreme UV Index ranging from 14 to 15, necessitating a burn time of only 10 minutes—indicating high vigilance is required for outdoor activities. The transition into May and August brings a very high UV Index of 8 to 9, where burn times extend to 15 minutes but caution is still imperative. The summer months of June and July display a high exposure level with indices of 6 to 7 and burn times of 25 minutes, making them slightly more tolerable but still requiring adequate sun protection. As fall approaches, September reverts to an extreme UV Index of 11 with a burn time of 10 minutes, while October and November maintain the extreme category with indices of 14 to 15. Visiting or residing in this area requires ongoing awareness of these UV levels. Residents and visitors are strongly advised to wear sunscreen, protective clothing, and seek shade during high UV periods, particularly in the high-risk months from January to April and September to November.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bermejo | 15 | 14 | 14 | 11 | 8 | 6 | 7 | 9 | 11 | 14 | 15 | 15 |
| 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 |
| 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 |