Last updated: June 2, 2025
Understanding the UV Index in Denuma, Indonesia is crucial for protecting your skin and overall health, especially in a region known for its warm and humid climate. With UV levels peaking at 10 during the midday hours, awareness of these fluctuations can help you prevent sunburn and long-term skin damage. Since Denuma experiences strong solar radiation, being mindful of the UV Index allows residents and visitors alike to enjoy outdoor activities safely while minimizing exposure risks throughout the day. Staying informed is your best defense against harmful UV rays!
As the sun rises, the UV Index gradually climbs, beginning at a mild 1 at 7:00 AM. By 8:00 AM, it reaches 2, indicating an increase in exposure, but it’s from 9:00 AM that the intensity truly ramps up, hitting a moderate 4. The peak occurs at 12:00 PM, where the index soars to an impressive 10, signaling a high risk of harm from unprotected sun exposure. Following this peak, the UV Index begins to gently descend, dropping to 9 at 1:00 PM and then gradually tapering off to 5 by 3:00 PM. As the afternoon wanes, the values decrease steadily, leaving a comfortable 1 by 5:00 PM, and finally settling at 0 by 7:00 PM. It’s a clear reminder that while the midday sun can be mighty, the late afternoon offers a more forgiving vibe for outdoor activities.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The seasonal UV changes indicate that January through April maintain an extreme UV Index of 15, with consistent burn times of just 10 minutes. As we transition into May and June, the UV levels decrease slightly to 12 and 10, respectively, but remain in the very high to extreme categories. The peak summer months of July and August see a jump back to an extreme rating with a burn time of 10 minutes, while September and October return to an extreme level of 15. November and December continue this trend with UV indices of 14, ensuring that high-risk months span throughout the year, particularly from January to September. Therefore, it is crucial for visitors and residents alike to adopt strict sun protection measures, such as applying sunscreen regularly, wearing protective clothing, and seeking shade to minimize exposure, especially during peak UV hours.
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 |
| Denuma | 15 | 15 | 15 | 14 | 12 | 10 | 11 | 13 | 15 | 15 | 14 | 14 |