Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Tena, Ecuador, a place known for its lush landscapes and vibrant climate. With the potential for intense sunlight, particularly during peak hours, being aware of UV levels can significantly aid in preventing sunburn and protecting overall skin health. Tena's tropical savanna climate brings not only beautiful scenery but also heightened exposure risks to UV radiation, especially from 10 AM to 2 PM when the UV Index often peaks at an alarming 13. Stay informed and enjoy the sun safely!
As the sun rises, the UV Index begins its gradual ascent, hitting a mild 1 by 7:00 AM. The intensity grows steadily, reaching 2 by 8:00 AM and then surging to 5 at 9:00 AM. By 10:00 AM, the index peaks at a robust 8, warning of increasing exposure risk. 11:00 AM sees the UV rays intensify to an impressive 11, leading to a maximum of 13 at 12:00 PM, making it critical to stay protected. The afternoon sun starts to mellow out, dropping to 12 by 1:00 PM, then gradually tapering off to 10 at 2:00 PM, 6 at 3:00 PM, and further declining to 3 at 4:00 PM. Finally, as evening descends, the index falls to 1 by 5:00 PM and remains at that level through 6:00 PM, until fading to 0 after sunset at 7:00 PM. Stay vigilant and shield yourself during those peak midday hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 5 | moderate | 30 min |
10:00 | 8 | very high | 15 min |
11:00 | 11 | extreme | 10 min |
12:00 | 13 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 10 | 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 |
Throughout the year, UV Index levels remain high, particularly in the early months from January to April, where the index peaks at 17. This suggests that the highest risk months are clearly the winter and early spring, specifically March and April, where exposure is categorized as extreme, and the burn time is as short as 10 minutes. Although the index slightly declines to 13 during the summer months of June through August, it remains in the extreme category, continuing to pose significant risks to skin health. As we move toward fall, the UV Index rises again in September and October before gently tapering off, highlighting a persistent danger for residents and visitors alike. It is crucial for everyone to take precautions year-round—wearing sunscreen, protective clothing, and seeking shade to minimize risks, especially during the high UV index periods.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Guayaquil UVI | 14 | 14 | 15 | 14 | 12 | 11 | 10 | 11 | 13 | 13 | 11 | 12 |
Machala UVI | 14 | 14 | 15 | 14 | 12 | 10 | 10 | 11 | 13 | 13 | 12 | 12 |
Santo Domingo de los Colorados UVI | 14 | 15 | 16 | 15 | 14 | 12 | 12 | 12 | 13 | 14 | 12 | 11 |
Tena | 15 | 15 | 17 | 17 | 15 | 13 | 13 | 13 | 15 | 15 | 14 | 12 |
Cuenca UVI | 16 | 17 | 18 | 18 | 16 | 13 | 14 | 14 | 17 | 16 | 15 | 15 |
Quito UVI | 17 | 17 | 19 | 19 | 17 | 14 | 15 | 15 | 17 | 17 | 16 | 14 |