Last updated: July 2, 2025
In Blambangan Umpu, Indonesia, awareness of the UV Index is essential for protecting your skin and overall health. With its tropical Af climate, the region experiences significant UV exposure, particularly during the peak hours of 10 AM to 2 PM, where indices can soar to 12—a level that poses serious risks for sunburn and long-term skin damage. By understanding UV levels, residents and visitors alike can take proactive measures to enjoy the beautiful sunlight while safeguarding their skin against harmful effects. Stay informed and make sun safety a priority in this vibrant part of the world!
The UV Index throughout the day reveals a dynamic range of solar intensity, peaking at 12 around noon. Starting the day gently, the index registers a low 1 at 7:00 AM, gradually rising to 2 by 8:00 AM. As the sun climbs higher, it reaches 5 by 9:00 AM, then surges to a robust 11 by 11:00 AM, signaling higher caution for outdoor activities. The peak at midday is a daunting 12, urging everyone to seek shade and wear protective gear. The intensity begins to taper off in the afternoon, dropping back to 8 at 2:00 PM and further to 5 by 3:00 PM. By the late afternoon, the index drops significantly to 1 at 5:00 PM and settles at 0 by 6:00 PM, giving a gentle reminder that the sun's might can vary dramatically throughout the day.
| 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 | 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, UV Index levels remain consistently high, ranging from 14 to 16 during the winter and spring months, making January through April particularly high-risk periods for sun exposure. Notably, the UV Index is marked as extreme across all months, indicating a burn time of just 10 minutes. While levels dip slightly in June (11) and July (12), they rise again in August (13) and remain elevated through September (14), October (15), and November (15). As such, it is advised that both visitors and residents take precautionary measures against UV exposure year-round, particularly from January through April. Using broad-spectrum sunscreen, wearing protective clothing, and seeking shade can help mitigate the risk of skin damage during these high-risk months.
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 |
| Blambangan Umpu | 15 | 16 | 16 | 15 | 13 | 11 | 12 | 13 | 14 | 15 | 15 | 14 |