Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Manismata, Indonesia, where the tropical climate frequently exposes individuals to high levels of ultraviolet radiation throughout the day. Awareness of UV levels is essential not just for preventing sunburn but also for maintaining long-term skin health, particularly during peak hours when the index can soar to 12—indicating extremely high risk. With an Af climate that features intense sun exposure, knowing when to seek shade or apply sunscreen can make all the difference in protecting yourself and your loved ones from harmful effects. Stay informed and enjoy the beautiful sunny days in safety!
At 07:00, the UV Index begins at a low 1, but as the sun rises higher, it quickly climbs to 3 by 08:00. By 09:00, the intensity spikes to 7, and by 10:00, it reaches a peak of 10. The sun is at its strongest between 11:00 and 12:00, where it holds steady at a striking 12—a clear invitation to seek shade or slather on sunscreen. The UV Index then begins to taper off, dropping to 10 at 13:00, followed by a gentle decline, reaching 4 by 15:00, and further down to 2 by 16:00. As the day winds down, the UV Index falls to 1 at 17:00 and finally to 0 by 18:00 and 19:00, signaling the sun's retreat and a welcome relief from its intensity.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | 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 |
Throughout the year, UV Index levels remain consistently high, categorizing the exposure as extreme. Notably, from February to April, the UV Index peaks at 16, indicating a significant risk of skin damage with a burn time of just 10 minutes. As summer approaches, the index slightly declines to 12-13 in June through August but remains in the extreme category. In the fall, the UV Index rises again to 15 in September and October before tapering off slightly in November and December. Given this information, it is crucial for both visitors and residents to take protective measures against UV exposure, especially during the high-risk months of February through April. It is recommended to utilize sunscreen, wear protective clothing, and seek shade whenever possible to minimize the risk of skin damage throughout the year.
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 |
| Manismata | 14 | 16 | 16 | 14 | 14 | 12 | 12 | 13 | 15 | 15 | 14 | 13 |