Last updated: June 2, 2025
Understanding the UV Index in Sumberjo Kulon, Indonesia, is vital for safeguarding your skin and overall health. Given the region's tropical climate, the potential for harmful UV exposure is significant, especially during peak hours when UV levels soar above 9 around midday. Awareness of these UV readings is essential for preventing sunburn and long-term skin damage, empowering residents and visitors to make informed decisions about sun safety. With characteristic high UV risks, especially during sunny days, keeping track of the UV Index can help you enjoy the beautiful weather while protecting your well-being.
The UV Index for the day reveals a dynamic pattern that peaks in the late morning. Starting at a gentle 1 by 07:00, the intensity gradually increases to a moderate 3 by 08:00. Things really heat up as we approach 10:00, with the index soaring to a striking 9, reaching its zenith at 11:00 with a blistering 11. As the afternoon unfolds, the levels begin to decline, dropping to 10 by 12:00, then tapering off to 8 at 13:00. By 14:00, it significantly decreases to 5, and continues to drop, settling back at 3 by 15:00. The UV levels plunge in the late afternoon, reaching 1 by 16:00 and fading to 0 after 18:00. For sun-seekers and outdoor enthusiasts, the most intense UV exposure occurs during the late morning hours—time to lather on that sunscreen!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index indicates that the highest risk months for UV exposure are January through April, where values remain consistently at 14-15 (extreme) with a burn time of just 10 minutes. Notably, September through December also exhibit high UV levels of 15. As such, both residents and visitors are strongly advised to take precautionary measures year-round, applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak sun hours. Staying informed about UV levels is crucial to minimizing the risk of skin damage throughout the year.
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 |
| Sumberjo Kulon | 14 | 15 | 15 | 14 | 12 | 11 | 11 | 13 | 15 | 15 | 15 | 15 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |