Last updated: May 3, 2025
Understanding the UV Index is crucial for the residents of Pretana, Indonesia, where the tropical climate brings with it unique sun exposure challenges. With peak UV levels soaring to 12 during midday, awareness of these fluctuations is essential for preventing sunburn and safeguarding skin health. Recognizing the risks associated with high UV levels—particularly between 10 AM and 2 PM—can empower locals and visitors alike to take protective measures, ensuring outdoor activities remain enjoyable and safe under the radiant sun.
Starting the day with a gentle UV Index of 1 at 07:00, the sun gradually raises its intensity. By 08:00, it reaches 3, and as the morning unfolds, the UV Index climbs sharply to 5 by 09:00. The sun's strength peaks magnificently at 12 during the noon hour (12:00), making it crucial for outdoor enthusiasts to take precautions. As the afternoon progresses, the UV Index dips to 11 at 13:00 before declining to 8 by 14:00. The intensity further wanes to 4 at 15:00, dropping to 2 by 16:00, and returning to a gentle 1 by 17:00. Finally, by 18:00 and into the evening, the UV Index falls to 0, signaling a safe time for all as the sun sets. Remember to enjoy the bright hours while protecting your skin!
| 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 | 4 | 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 |
The UV Index data reveals significant seasonal variations, with extremely high levels persisting from January through April and again in July, August, September, October, and November. The months of January through April consistently show UV Index values between 15 and 16, indicating an exposure category of extreme, with a rapid burn time of just 10 minutes. In May, the index slightly drops to 12, but it remains in the extreme category until June, when it falls to a very high level of 10. Visitors and residents should be particularly cautious during the high-risk months of January, February, March, April, July, August, September, October, and November, all classified as extreme exposure months. To protect against skin damage, it is imperative to apply sunscreen, wear protective clothing, and limit sun exposure, especially during midday hours.
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 |
| Pretana | 15 | 16 | 16 | 15 | 12 | 10 | 12 | 13 | 15 | 15 | 15 | 15 |