Last updated: June 2, 2025
In Rainis, Indonesia, awareness of the UV Index is crucial for safeguarding skin health against the sun's harmful rays. Understanding UV levels helps residents and visitors alike take necessary precautions to prevent sunburn and long-term skin damage. Given Rainis’s Af climate, characterized by high humidity and tropical conditions, the risks of high UV exposure can peak significantly during the midday hours, with UV Index values soaring to 13 around noon. By staying informed about local UV levels, you can enjoy the beautiful outdoors while keeping your skin safe and healthy.
The UV Index reveals a dynamic pattern throughout the day, peaking dramatically as the sun climbs higher. Starting gently at 2 at 07:00, the index escalates to a robust 5 by 08:00. By 09:00, it reaches 8, marking the onset of serious sun exposure. The midday sun hits hard, surging to its maximum of 13 at both 11:00 and 12:00, demanding caution for those outdoors. As the afternoon wanes, the intensity softens, dropping to 11 at 13:00, then retreating to 7 by 14:00. The UV levels continue to decline, with 4 at 15:00, and finally settling at a safe 1 by 17:00. As the sun sets, the index falls to 0 by 18:00, offering a respite from UV exposure. It's a reminder to wear sunscreen during peak hours for safety!
| 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 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 7 | high | 25 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 shows significant seasonal variations, maintaining an extreme exposure category throughout the year. January to March presents some of the highest values, peaking at 16, indicating that residents and visitors should be particularly cautious, as burn time is as short as 10 minutes. April and May remain high, with a UV Index of 16 and 15, respectively. As summer progresses into June and July, the index slightly drops to 13, but remains in the extreme category. August and September see a return to 14 and 15, followed by October and November where levels stabilize at 14. By December, there's a slight decrease to 12, yet caution is still warranted. Overall, from January through September marks the high-risk months for sun exposure; therefore, it is advisable for individuals to protect their skin with sunscreen, seek shade, and wear protective clothing to avoid sunburn during these periods.
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 |
| Rainis | 14 | 16 | 16 | 16 | 15 | 13 | 13 | 14 | 15 | 14 | 14 | 12 |