Last updated: August 1, 2025
In Villa Serrano, Bolivia, staying informed about the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels not only helps residents and visitors shield themselves from harmful radiation, but also promotes long-term wellbeing in a region known for its contrasting climate. With the Cwb climate zone providing plenty of sunny days, the UV exposure can reach peak levels between 10 AM and 1 PM, with values climbing to a significant 9. Being mindful of these fluctuations ensures that everyone can enjoy the beautiful outdoors while protecting their skin from the risks associated with high UV ratings.
As the sun rises, the UV Index starts off low, peaking at just 1 by 8 AM. However, as the day progresses, intensity increases, reaching a notable 6 by 10 AM and soaring to its maximum of 9 from noon to 1 PM. This peak signifies a time when sun safety becomes essential, urging you to seek shade and apply sunscreen. The afternoon sees a gradual decline with the index dropping to 5 by 3 PM and lower values as the sun begins its descent. By ~4 PM, the index falls to 2, and soon after, it returns to 1 by 5 PM, fading to 0 in the evening. Overall, it’s wise to take precautions during the midday hours when the UV levels are at their highest!
| 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 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 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 indicate extreme risk of harm from unprotected sun exposure in the winter and spring months, with values reaching 17 from January to March and remaining at 14 in April. As the summer approaches, UV levels decrease slightly to a very high level of 9 in June and July, before rising again to 12 in August. September and October see a return to extreme levels, peaking again at 17 in November and December, combined with a consistent burn time of 10 minutes in most months. Residents and visitors should exercise caution, particularly from January to April and in November, ensuring they use adequate sun protection such as sunscreen, hats, and clothing whenever outdoors to minimize the risk of sunburn and skin damage.
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 |
| Villa Serrano | 17 | 17 | 15 | 14 | 11 | 9 | 9 | 12 | 14 | 16 | 17 | 17 |
| 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 |