Last updated: July 2, 2025
Understanding the UV Index in Santa Marta, Colombia is crucial to protecting your skin and overall health. With a tropical climate that boasts ample sunshine, the risk of sunburn and long-term skin damage is significantly heightened, especially during peak hours when UV levels soar — reaching a maximum of 13 around noon. By staying informed about daily UV levels, you can make smarter outdoor decisions, ensuring you enjoy the beautiful beaches and vibrant nature of Santa Marta while minimizing the harmful effects of UV exposure. Whether you're lounging in the sun or exploring the stunning landscapes, awareness of the UV Index is your first line of defense against those potent rays.
As the day unfolds, the UV Index rises dramatically, peaking at 13 around 12:00 PM, signaling a maximum level of sun intensity. Early morning hours start off mild, with a low of 1 at 07:00 and climbing steadily to 6 by 09:00. The sun reaches its zenith at 11:00, with a value of 12, before gradually declining through the afternoon. By 15:00, the index drops to 6, further falling to 3 by 16:00 and finally returning to a safe 1 by 17:00. As twilight approaches, the index settles to 0 after 19:00, providing a serene close to the day. Remember to protect your skin during the peak hours from 10 AM to 2 PM, when the sun's rays are most potent!
| 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 displays significant seasonal fluctuations, peaking from February to April with values reaching as high as 15 in April, indicating an extreme exposure category with a burn time of just 10 minutes. The highest-risk months for UV exposure are March and April, where precautions are especially crucial. Throughout the year, residents and visitors should remain vigilant, particularly during these months, and take appropriate measures such as wearing sunscreen, protective clothing, and seeking shade during peak hours. Even during December and November, when the UV Index is slightly lower at 11 and 10, respectively, the risk of skin damage remains significant, emphasizing the need for continued sun safety practices.
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 |
| Santa Marta | 11 | 12 | 14 | 15 | 14 | 13 | 13 | 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 |