Last updated: July 2, 2025
Staying informed about the UV Index is crucial for residents of Kalumpang, Indonesia, where the tropical climate can lead to significant sun exposure year-round. Understanding UV levels is essential for effective sunburn prevention and maintaining overall skin health, particularly as the UV Index can soar to dangerous levels—reaching a peak of 11 during the midday hours. With Kalumpang's typical climate conditions, awareness of UV exposure risks is vital to safeguard against long-term skin damage and promote healthy sun habits. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while protecting your skin!
The UV Index for the day presents a clear peak around midday, reaching its maximum at 12:00 PM with a formidable level of 11. As the sun rises, the UV levels gradually increase from 1 at 7:00 AM, reaching 5 by 9:00 AM. By 10:00 AM, the index escalates to a 7, quickly climbing to 10 at 11:00 AM and peaking at 11 at noon, advising everyone to take necessary precautions. Following this zenith, the intensity diminishes, dropping to 7 by 2:00 PM, then gently tapering off to 4 in the mid-afternoon and returning to 1 by 5:00 PM. By evening, the UV exposure wanes completely, hitting 0 at 6:00 PM. It’s a clear reminder that while the sun is shining bright, vigilance against UV radiation is crucial during peak 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 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index in the region exhibits a striking consistency throughout the year, remaining at an extreme level of 11 to 16, with a burn time of just 10 minutes. The months of January through April start with a high index peaking in February and March at 16, indicating these winter months are particularly hazardous for sun exposure. As spring transitions to summer, the UV levels drop slightly but stay in the extreme category from May to August. A notable rise occurs again in September, before slightly decreasing as winter approaches, with October and November both at 15. Residents and visitors are urged to adopt protective measures year-round, particularly during the high-risk months from January to March, and to remain vigilant even during the late summer and autumn months. Always wear sunscreen, hats, and protective clothing when exposed to the sun for prolonged periods, and seek shade whenever possible.
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 |
| Kalumpang | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 11 | 13 | 15 | 15 | 14 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |