Last updated: July 2, 2025
Understanding the UV Index is essential for residents and visitors in Mislak, Indonesia, as it plays a crucial role in promoting skin health and preventing sunburn. The tropical climate of Mislak, characterized by its Af climate zone, means that UV levels can soar, especially during midday hours when they reach a peak of 12 between 12:00 PM and 1:00 PM. By being aware of the daily UV Index, you can take necessary precautions to protect your skin and enjoy the sunny days safely. Whether you're lounging on the beach or exploring the lush landscapes, knowing the UV levels helps you make informed decisions to stay sun-safe!
At dawn, the UV Index starts off low at 1 at 07:00, but as the sun rises, so does the intensity of UV radiation. By 09:00, it reaches 5, climbing rapidly to a peak of 12 at 12:00. The midday sun is fierce, with the UV Index hitting its maximum of 11 at 11:00 and slightly dropping to 8 by 14:00. As the afternoon progresses, the index declines steadily, returning to a more moderate 5 at 15:00, then tapering off to 2 by 16:00. The day concludes with a safe 1 at 17:00 and fades to 0 from 18:00 onwards, indicating a reprieve from UV exposure. Remember to protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | 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 observed from January to May and continuing through to October. The highest readings occur in February and March with an index of 16, indicating a high-risk period for sunburn, with a burn time of just 10 minutes. Visitors and residents should take precautionary measures during these months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade whenever possible. Even in the summer months of June and July, the UV Index remains at 12, signifying the need for continued vigilance in sun safety. As fall approaches, the UV index gradually decreases but continues to stay in the extreme category, remaining a concern into December. Overall, individuals should be prepared for high UV exposure year-round, prioritizing skin protection and health.
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 |
| Mislak | 14 | 16 | 16 | 15 | 13 | 12 | 12 | 14 | 14 | 15 | 14 | 13 |