Last updated: July 2, 2025
Understanding the UV Index in Sewon, Indonesia is crucial for protecting your skin and preventing sunburn, especially given the region's tropical climate. With UV levels peaking around noon at a dangerous 11, awareness of these values can help you make informed choices about sun protection throughout the day. As exposure risks fluctuate, particularly during late morning to early afternoon, being mindful of the UV Index not only aids in safeguarding your skin health but also ensures you enjoy the sunshine safely. Stay informed and embrace the sun with care!
The UV Index for the day tells an illuminating story of sun intensity. Early risers at 07:00 will find a mild UV level of 1, perfect for a leisurely morning stroll. However, as the sun climbs, things heat up, peaking at 11 by 11:00 and 12:00, indicating a high risk of harm from unprotected sun exposure. It’s the ideal time for sunscreen and protective gear! Post-lunch, the index begins to drop, tapering off to 4 by 15:00, and a much more manageable 1 by the evening hours. As twilight approaches, the UV Index decreases to 0 by 18:00, providing a safe haven for an evening out without the sun's glare. Remember to plan your outdoor activities around this UV profile to stay safe while enjoying the sunshine!
| 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 | 11 | extreme | 10 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | 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 data reveals a clear pattern of seasonal changes, with the highest values occurring from January through March, where it consistently reaches an extreme level of 15 or 16, resulting in a rapid burn time of just 10 minutes. April sees a slight decrease to 14, but remains categorized as extreme. May marks the last month of extreme risk at 12, followed by a transition to very high with a UV Index of 10 in June. As summer progresses, July and August boast an extreme level of 11 and 13. Notably, September bounces back to 14 before tapering down as the year ends, with October and November peaking again at 15. December closes the year at 14. Given these readings, visitors and residents should exercise increased caution during these high-risk months—particularly from January through April and again in September—by wearing protective clothing, applying broad-spectrum sunscreen, and limiting sun exposure during peak hours to reduce the risk of 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 |
| Sewon | 15 | 15 | 16 | 14 | 12 | 10 | 11 | 13 | 14 | 15 | 15 | 14 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |