Last updated: June 2, 2025
In Siborong-Borong, Indonesia, awareness of the UV Index is crucial for protecting your skin from harmful sun exposure. Understanding UV levels not only helps in preventing painful sunburns but also plays a vital role in maintaining long-term skin health. With a tropical climate characterized by high UV exposure, especially during midday hours—where levels can soar to a staggering 13—the risks of harmful effects increase significantly. Stay informed and take proactive measures to enjoy the sun safely in this beautiful region!
As the sun rises, the UV Index begins its gentle ascent from a low of 1 at 07:00, marking a safe start to the day. By 09:00, it climbs to 5, urging outdoor enthusiasts to take some precautions. The peak intensity hits at 12:00 with a formidable 13, necessitating strong sun protection. The afternoon sees a slight dip, with the index falling to 10 at 14:00 and easing further to 4 by 16:00. As daylight wanes, the index drops back to 1 by 17:00, finally settling at 0 by 19:00, signaling a retreat of the sun’s harsh rays. Remember, the highest UV exposure occurs around midday, so plan your outdoor activities accordingly!
| 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 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 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 experiences significant fluctuations throughout the year, maintaining a highly extreme level, particularly from January to April, where it peaks at 17. This intensity leads to a critical burn time of only 10 minutes during these months, making January to April the highest-risk period for sun exposure. Although UV Index values slightly decrease in the summer months of June and July to 13, they remain within the extreme category. August to October sees a mild increase again, with values of 15 and 16 respectively, maintaining the risk for overexposure. Visitors and residents are advised to take precautionary measures year-round, such as wearing protective clothing and applying broad-spectrum sunscreen, to minimize the risk of skin damage.
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 |
| Siborong-Borong | 15 | 16 | 17 | 17 | 16 | 13 | 13 | 15 | 16 | 15 | 14 | 13 |