Last updated: July 2, 2025
In Nangahurebukitpermai, Indonesia, staying informed about the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels can significantly help in preventing sunburn and protecting against long-term skin damage, especially in a region characterized by its tropical Aw climate. Here, the UV Index often soars to dangerous levels, peaking at 12 during midday, which can pose serious risks if proper precautions aren't taken. By being aware of these daily fluctuations in UV exposure, you can enjoy the beautiful Indonesian sun while keeping your skin safe and healthy.
The UV Index throughout the day paints a vivid picture of sun intensity, peaking dramatically around noon. Beginning with a gentle start at 1 at 07:00, the index climbs steadily, reaching 3 by 08:00 and hitting 5 at 09:00. The sun asserts its power by 10:00, blasting to 9, and continues to soar to a scorching maximum of 12 at 12:00. As the afternoon progresses, the readings begin to decline, dropping to 10 at 13:00, then to 8 at 14:00. By 15:00, the index has already dipped to 4, transitioning to 2 by 16:00. As daylight wanes, the UV Index gently fades to 1 by 17:00 and finally retreats to 0 by 18:00, offering a gentle reminder to seek shade during those peak hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 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, the UV Index remains consistently high, categorized as extreme, with minimal fluctuation in burn time—averaging just 10 minutes of unprotected sun exposure before sunburn occurs. The high-risk months for UV exposure span from January to March, where the index reaches a peak of 16, and persists notably throughout the year, especially in September and November with values of 15. Residents and visitors are strongly advised to take necessary precautions during these months, including wearing protective clothing, using broad-spectrum sunscreen, and seeking shade whenever possible, as even short periods of exposure can lead to serious 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 |
| Nangahurebukitpermai | 15 | 16 | 16 | 14 | 12 | 11 | 12 | 13 | 15 | 15 | 15 | 14 |