Last updated: July 2, 2025
In Bontang Baru, Indonesia, staying aware of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels not only helps you safeguard your skin but also enhances your outdoor experiences by informing you when to seek shade or apply sunscreen. With a tropical climate characterized by intense sunlight, Bontang Baru experiences significant UV exposure, particularly during peak hours from 10 AM to 2 PM, where the index can soar to an alarming 13. By keeping an eye on the UV Index, you can take proactive steps to protect yourself and enjoy the beautiful Bontang Baru sun responsibly.
As the day unfolds, the UV Index rises dramatically, peaking at 13 around noon. Starting from a gentle 1 at 7:00 AM, it escalates to a moderate 2 by 8:00 AM and then takes a significant leap to 5 at 9:00 AM. By 10:00 AM, it reaches 8, intensifying further to a striking 11 at 11:00 AM. Just an hour later, the sun's rays hit their zenith with an impressive 13. The index then gradually declines, marking 12 at 1:00 PM, 9 at 2:00 PM, and 6 by 3:00 PM. As the afternoon wanes, the UV Index diminishes to 3 at 4:00 PM, and by sunset, it returns to a safe 1 at 7:00 PM, ultimately dropping to 0 by 8:00 PM. Remember to protect your skin during those 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 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index remains exceptionally high throughout the year, with extreme exposure levels recorded from January through May, peaking in February and March at 16. The risk continues into late summer, with slight decreases in June and July, but still maintaining high values around 12 to 14. Seasonal transitions into fall and winter show minimal fluctuations, with October witnessing a UV Index of 15 and the remaining months lingering around 13 to 14. Visitors and residents should be particularly cautious during these high-risk months—especially from January to May and in October—taking precautions such as using sunscreen, wearing protective clothing, and limiting sun exposure to less than 10 minutes at a time. Awareness and protective measures are essential to prevent skin damage and maintain health year-round.
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 |
| Bontang Baru | 14 | 16 | 16 | 16 | 14 | 12 | 13 | 14 | 14 | 15 | 14 | 13 |