Last updated: June 2, 2025
In Sliwungkrajan, Indonesia, being aware of the UV Index is vital for protecting your skin and overall health. Understanding UV levels helps you take proactive measures against sunburn and long-term skin damage, which is particularly important in this tropical climate where UV exposure can be intense. With daily peaks reaching as high as 11 around midday, residents and visitors alike should stay informed about UV levels to enjoy the sunny outdoors safely while minimizing health risks. Whether planning a day at the beach or just running errands, knowing the UV Index can empower you to make smart choices and safeguard your skin.
As the sun rises, the UV Index begins to climb, peaking dramatically at 11 by 11:00 AM, signaling the day's intense sun exposure. From a gentle 2 at 7:00 AM, the index escalates through the morning, hitting 9 by 10:00 AM and reaching a midday pinnacle of 11. After this height, the UV levels start their gradual descent, dropping to 8 by 1:00 PM and further tapering off to 5 at 2:00 PM. As afternoon turns to evening, the UV Index decreases significantly, settling at 0 by 7:00 PM. This data highlights the importance of sun protection during the peak hours, especially between 10:00 AM and 2:00 PM, when the potential for skin damage is at its highest. Stay safe and enjoy the sunshine wisely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | 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 |
Throughout the year, the UV Index remains consistently high, with extreme levels recorded from January to December. The highest UV Index values occur in February (16) and remain above 13 until the end of August, indicating that these months pose the greatest risk for sunburn and skin damage, particularly with a rapid burn time of just 10 minutes across all months. Visitors and residents are strongly advised to take precautions during high-risk months, which span from January through November, by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade, especially during midday hours. Remember, even on cloudy days, UV rays can penetrate and cause harm, so stay vigilant and prioritize sun safety year-round.
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 |
| Sliwungkrajan | 14 | 16 | 15 | 14 | 13 | 11 | 12 | 13 | 15 | 15 | 14 | 14 |