Last updated: July 2, 2025
In Sumbawa Besar, Indonesia, awareness of the UV Index is crucial for maintaining sun safety and protecting skin health. Understanding UV levels not only helps in preventing painful sunburn but also plays a significant role in reducing the long-term risk of skin conditions. With a tropical Aw climate, Sumbawa Besar experiences fluctuating UV exposure throughout the day, peaking at a dangerous 12 between noon and early afternoon. By staying informed about these UV levels, residents and visitors can take simple precautions to enjoy the beautiful sun while safeguarding their skin from harmful rays.
The UV Index throughout the day presented a dynamic shift, beginning at a low 1 by 7:00 AM, gradually escalating to its peak of 12 at noon. The intensity reached 10 at 11:00 AM, warning sun-seekers to take precautions as midday approached. As the afternoon progressed, values began to decline, with the index tapering off to 5 by 3:00 PM and further dropping to 1 by 5:00 PM. Finally, as the sun set, the index fell to a safe 0 by 7:00 PM. For those planning outdoor activities, it was crucial to stay vigilant around midday when UV exposure was at its highest, ensuring a healthy balance between fun in the sun and skin protection.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | 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, the UV Index displays significant seasonal variations, with the highest values occurring between January and April, where it consistently remains at an extreme level of 15 or 16. These months, especially January through March, are marked by a very rapid burn time of just 10 minutes, indicating critical skin protection is required. May sees a slight decrease to 13, but the risk remains extremely high, continuing through July and August with an index of 12 and 13, respectively. By June, the UV Index drops to 10, categorized as very high, extending the burn time to 15 minutes. As summer fades into early fall, the UV Index begins to climb again, peaking at 14 in September and stabilizing around 14 to 15 from October to December. Visitors and residents should prioritize sun protection during these high-risk months, use broad-spectrum sunscreen, wear protective clothing, and seek shade, especially during midday hours, to minimize the harmful effects of UV exposure.
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 |
| Sumbawa Besar | 15 | 16 | 16 | 15 | 13 | 10 | 12 | 13 | 14 | 15 | 14 | 14 |