Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Werang, Indonesia, where high levels of ultraviolet radiation pose significant risks to skin health. With the region's Aw climate, characterized by its tropical nature, sun exposure can lead to sunburn and long-term skin damage if precautions are not taken. By keeping an eye on UV levels throughout the day—peaking at a high 12 around noon—locals can effectively protect themselves from harmful effects and enjoy the sun safely. Awareness of these daily fluctuations empowers everyone to make informed decisions about sun protection, ensuring a healthier and more enjoyable outdoor experience.
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, the UV Index fluctuates significantly, with extreme exposure categories dominating the winter and early spring months. From January to April, the UV Index remains at a high 15-16, indicating a burn time of just 10 minutes. As we transition into summer, the intensity slightly decreases, with June witnessing a very high index of 10, allowing for a slightly extended burn time of 15 minutes. However, July and August revert back to extreme levels (12-13) with a burn time of 10 minutes once again. September and October see the UV Index hovering between 14-15, while slightly less intense than earlier months, still pose risks with a burn time of 10 minutes. As winter approaches in November and December, the levels remain fairly consistent, with a UV Index around 13-14. Given these data, it's crucial for visitors and residents alike to exercise caution and utilize sun protection measures during high-risk months, particularly from January through September. Regularly applying sunscreen, wearing protective clothing, and seeking shade during peak hours will help mitigate the risks associated with high 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 |
| Werang | 15 | 16 | 16 | 15 | 12 | 10 | 12 | 13 | 15 | 14 | 14 | 13 |