Last updated: August 1, 2025
In San Juan Nepomuceno, Colombia, being aware of the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels is crucial for preventing sunburn and reducing the long-term risks of skin damage, especially in a region characterized by a tropical climate. With peak UV levels reaching a severe 12 during midday, locals and visitors alike should take precautions when enjoying outdoor activities. Making informed choices based on the UV Index can significantly enhance your time under the Colombian sun while keeping your skin protected.
Starting the day with a low UV Index of 1 at 7:00 AM, the sun begins to assert its presence as the hours roll on. By 9:00 AM, it climbs to 6, marking the onset of a noticeable increase. The peak is reached at 11:00 AM and 12:00 PM, with the UV Index soaring to 12, warning sun seekers to stay protected. As the afternoon progresses, the intensity gradually declines, dipping to 9 at 2:00 PM, before further dropping to 6 at 3:00 PM. By late afternoon, from 4:00 PM onwards, it's back to safer levels, resting at 3 until 5:00 PM, then falling to 1 as the sun begins to set. By 7:00 PM, the UV threat dissipates altogether, registering 0. This pattern underscores the importance of sun safety, especially during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | 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 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index shows significant seasonal changes, with consistently extreme levels from January through November, and a slight decrease in December. The highest UV Index occurs in March and April, peaking at 14 and 15, respectively, where burn time is notably short at just 10 minutes. Visitors and residents should be especially cautious during the months of March and April, where the UV exposure is the highest, posing greater risks for skin damage. In all extreme UV months, protective measures are critical; wear sunscreen, protective clothing, and seek shade to minimize UV exposure. In December, while the UV Index drops to 10 with a burn time of 15 minutes, caution is still advised due to the potential for high sun intensity. Overall, maintaining awareness of UV levels and protecting oneself throughout the year is essential for health and safety.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Barranquilla UVI | 11 | 12 | 14 | 14 | 13 | 12 | 13 | 13 | 13 | 13 | 11 | 10 |
| Cartagena UVI | 11 | 11 | 13 | 15 | 13 | 13 | 12 | 13 | 13 | 13 | 11 | 10 |
| San Juan Nepomuceno | 11 | 12 | 14 | 15 | 14 | 13 | 12 | 13 | 13 | 13 | 11 | 10 |
| Medellin UVI | 14 | 15 | 17 | 16 | 16 | 14 | 14 | 15 | 14 | 14 | 13 | 12 |
| Cali UVI | 15 | 16 | 17 | 17 | 15 | 14 | 14 | 14 | 15 | 14 | 13 | 12 |
| Bogota UVI | 15 | 16 | 18 | 18 | 17 | 15 | 15 | 16 | 15 | 15 | 14 | 13 |