Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Grugul, Indonesia, where the tropical climate brings an abundance of sunshine. With UV levels that often reach extreme heights—peaking at 11 between 10:00 AM and 12:00 PM—awareness is key to preventing sunburn and safeguarding skin health. Failing to monitor these levels can lead to serious skin damage over time. Whether you're enjoying the outdoors or simply commuting, staying informed about UV exposure risks can help you make safer choices and protect your skin in this vibrant locale.
At dawn, the UV Index starts off low at 2 by 07:00, but as the sun climbs higher, it quickly gains intensity. By 09:00, it peaks at a striking 8, reaching a maximum of 13 at 11:00, indicating a significant risk for sun exposure. The afternoon sees a gradual decline, starting from 12 at noon to 10 by 13:00, before dropping to 6 at 14:00. As the sun begins to set, the index continues to plummet, dipping down to 1 by 16:00 and 17:00, and finally resting at 0 by 18:00 and beyond. It’s a day to enjoy the sun wisely, with the midday hours being the most critical for UV protection!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 6 | high | 25 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, UV Index levels remain consistently high, underscoring the need for heightened sun safety awareness. The highest UV indices are recorded in February (16) and October (16), while other months also see extreme levels, ranging from 13 to 15. Notably, every month presents a burn time of just 10 minutes, emphasizing that even brief exposure can lead to skin damage. Residents and visitors are strongly advised to take precautions during these high-risk months, such as wearing sunscreen, protective clothing, and seeking shade, especially when outdoors. Remember, the sun's rays can be harmful even on cloudy days, so maintain vigilance 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 |
| Grugul | 14 | 16 | 15 | 14 | 13 | 11 | 12 | 14 | 15 | 16 | 15 | 15 |