Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Sukamaju, Indonesia, where the tropical climate presents unique sun exposure risks. The UV levels can escalate rapidly throughout the day, peaking at a concerning 13 around noon. This makes it essential to grasp how high UV readings can lead to sunburn, long-term skin health issues, and other harmful effects. With an Af climate that keeps temperatures warm and sunny, being aware of UV Index levels not only helps in planning outdoor activities safely but also ensures we take necessary precautions to protect our skin from harmful ultraviolet rays. Stay informed and enjoy the sunshine responsibly!
The UV Index (UVI) begins its ascent at 07:00, reaching a modest 1, but as the sun climbs higher, so does the intensity. By 09:00, it hits 6, pushing outdoor enthusiasts to take notice. The peak occurs at 12:00, where the UVI soars to a scorching 13, indicating the need for sun protection. This high level remains at 12 until 13:00, before gradually tapering off to 9 by 14:00. As the afternoon progresses, the UVI then dips to 5 at 15:00, and continues to decline, hitting 2 at 16:00. Finally, the day winds down with the UVI falling to 1 by 17:00, and then sinking to 0 after 18:00, offering a reprieve from the sun's harsh rays for the evening.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | 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 |
The UV Index data indicates extremely high UV levels throughout the year, with particularly elevated values from January to April, where the index consistently reaches between 16 to 17. Subsequently, while the index slightly decreases from May through July, it remains at a high range of 12 to 14. The UV Index then increases again from August to October, peaking at 15 and 16 before tapering off in November and December. Residents and visitors should be especially cautious during these high-risk months (January to April) due to the consistent extreme exposure category, with burn times as short as 10 minutes across the year. It is crucial to take protective measures against UV rays, including wearing sunscreen, protective clothing, and sunglasses, and avoiding prolonged sun exposure during peak 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 |
| Sukamaju | 16 | 17 | 17 | 16 | 14 | 12 | 13 | 14 | 15 | 16 | 15 | 14 |