Last updated: June 2, 2025
Understanding the UV Index in Karangharjo, Indonesia, is essential for ensuring your skin's health and preventing sunburn, particularly in a region with a tropical climate that experiences high UV exposure. As the sun reaches its peak, particularly between 10:00 AM and 1:00 PM, the UV Index can soar to levels as high as 10, indicating a significant risk of harm from unprotected sun exposure. Awareness of these levels allows residents and visitors to take appropriate precautions, ensuring enjoyable outdoor activities while safeguarding against potential skin damage. Stay informed and protect yourself from the sun's harmful rays as you navigate the vibrant landscapes of Karangharjo!
The UV Index reveals a significant morning to afternoon rise in solar intensity, peaking at a striking 10 between 11:00 AM and 12:00 PM. Starting from a modest 2 at 7:00 AM, the index climbs steadily, reaching 6 by 9:00 AM and hitting 9 at 10:00 AM. As the sun reaches its zenith, the UVI holds steady at 10, highlighting a period when sun protection becomes crucial. By 1:00 PM, the index begins its gradual decline, dropping to 8, and easing further to 5 by 2:00 PM. As the day progresses into the late afternoon and evening, the UV Index decreases significantly, falling to 1 by 4:00 PM and dipping to 0 by 6:00 PM. This data underscores the importance of being sun-smart during the peak hours of 11:00 AM to 1:00 PM.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 10 | very high | 15 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 |
Throughout the year, the UV Index consistently remains high, particularly in the winter and fall months, with January to April showing extreme levels at 15 and April slightly decreasing to 14. As we move into the summer months, the index drops slightly, ranging from 10 to 12, before peaking again in September at 15 and surging to 16 in October. The high-risk months are notably from January to April and September to November, where the burn time is critically low at 10 minutes. Visitors and residents should exercise caution during these months by limiting sun exposure, wearing protective clothing, and using sunscreen to prevent skin damage. Being vigilant about UV levels is essential year-round, particularly during the peak periods, to ensure safety while enjoying outdoor activities.
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 |
| Karangharjo | 15 | 15 | 15 | 14 | 12 | 10 | 11 | 13 | 15 | 16 | 15 | 15 |