Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of San Sebastián Coatepeque, Guatemala, a region known for its beautiful landscapes and pleasant climate. With its Cwb climate, characterized by mild temperatures and heightened UV exposure, being aware of UV levels can significantly aid in sunburn prevention and maintaining skin health. During peak hours, particularly between 10 AM and 1 PM, the UV Index can soar as high as 15, indicating a very high risk of harm from unprotected sun exposure. For a city where outdoor activities thrive, grasping the importance of the UV Index is vital for enjoying the sun safely and protecting your skin against its harmful effects.
As the sun rises, the UV Index begins its ascent, starting at a modest 2 at 7:00 AM. By 8:00 AM, it reaches 4, signaling the start of a sunnier day. The real intensity kicks in at 9:00 AM, where it skyrockets to 7, and by 10:00 AM, it hits a powerful 11. The peak occurs at 12:00 PM with a staggering 15, emphasizing the need for sun protection during these critical midday hours. As the afternoon progresses, the index gradually declines, dropping to 11 by 2:00 PM, and further down to 4 by 4:00 PM. Finally, as the sun sets, the UV Index dwindles to 1 at 5:00 PM, before fading to 0 by 7:00 PM. It’s a vibrant reminder of the sun's powerful rays, urging us to stay vigilant and protect our skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 14 | extreme | 10 min |
| 12:00 | 15 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index varies throughout the year, peaking from March to October with values consistently marked as extreme. The highest levels occur in April with an index of 16, while January and December experience lower indices of 11 and 10, respectively, categorized as very high. Notably, the high-risk months for UV exposure are February through October, during which visitors and residents should take precautions seriously as the burn time at these levels is only 10 minutes. It is essential for individuals to wear sunscreen, protective clothing, and seek shade during peak sunlight hours to minimize the risk of skin damage. As the UV Index decreases in November and December, vigilance should still be retained, especially since burn times are still within a hazardous range.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Petapa UVI | 11 | 13 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 10 | 10 |
| Villa Nueva UVI | 11 | 13 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 10 | 10 |
| Mixco UVI | 11 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 11 | 10 |
| Guatemala City UVI | 11 | 13 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 11 | 10 |
| San Juan Sacatepequez UVI | 11 | 13 | 15 | 15 | 14 | 14 | 15 | 14 | 14 | 13 | 11 | 10 |
| San Sebastian Coatan | 11 | 13 | 15 | 16 | 15 | 15 | 15 | 15 | 15 | 13 | 11 | 10 |