Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Kayan Hulu, Indonesia, where the tropical climate can lead to high levels of ultraviolet radiation. With daily peaks reaching a staggering 14 during midday hours, being aware of UV levels helps prevent sunburn and promotes overall skin health. As the sun intensifies with the region's typically warm weather, knowing the UV Index will empower you to take necessary precautions and protect yourself and your loved ones from the harmful effects of excessive sun exposure. Stay informed and keep your skin safe in this vibrant part of the world!
The UV Index readings throughout the day reveal a striking pattern of intensity, peaking at 14 at 12:00 PM. The sun's rays strengthen quickly, with a gradual rise from 1 at 7:00 AM to a robust 9 by 10:00 AM. As the clock strikes 11:00 AM, the UV Index reaches 12, indicating heightened sun exposure risk and prompting sun safety measures. By the afternoon, the index remains significant, hitting 13 at 1:00 PM before tapering off. The UV levels then decline steadily, settling at 4 by 4:00 PM, and returning to a minimal 1 from 5:00 PM onward. As the day winds down, the UV Index drops to 0 by 7:00 PM, marking a safe end to sun exposure. Stay mindful of these UV fluctuations for your outdoor plans!
| 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 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 13 | 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 data indicates a consistently high level of solar radiation throughout the year, with extreme exposure categories observed from January to December. March peaks with a UV Index of 18, making it the month with the highest risk, while February follows closely with 16. Despite some fluctuations, most months maintain a UV Index ranging from 13 to 18, meaning the burn time remains a mere 10 minutes across the year. Visitors and residents are strongly advised to take precautions during these high-risk months, particularly from January to April, when the UV levels are at their highest. Protective measures such as wearing sunscreen, protective clothing, and sunglasses, and seeking shade during midday hours are essential to reducing the risk of skin damage and other UV-related health issues.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Surabaya UVI | 13 | 15 | 14 | 12 | 12 | 10 | 11 | 12 | 14 | 13 | 13 | 13 |
| Bekasi UVI | 14 | 16 | 16 | 14 | 11 | 10 | 10 | 11 | 13 | 15 | 14 | 13 |
| Jakarta UVI | 14 | 16 | 16 | 14 | 11 | 10 | 10 | 11 | 13 | 15 | 14 | 13 |
| Medan UVI | 13 | 15 | 15 | 15 | 14 | 12 | 12 | 13 | 14 | 14 | 13 | 12 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |
| Kayan Hulu | 15 | 16 | 18 | 17 | 15 | 14 | 14 | 15 | 15 | 16 | 14 | 13 |