Last updated: June 2, 2025
In Menjalin, Indonesia, staying aware of the UV Index is crucial for protecting your skin and overall health. Understanding the daily fluctuations in UV levels helps residents and visitors alike to prevent sunburn and reduce the risk of long-term skin damage. With a tropical climate characterized by high temperatures and varying UV exposure—reaching a maximum index of 12 around midday—the importance of sun safety cannot be overstated. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while safeguarding your skin from harmful rays.
The UV Index throughout the day reveals a striking fluctuation in sun intensity. Starting at a modest 1 by 07:00, the index quickly rises as the sun ascends, hitting 4 by 08:00. As the clock strikes 09:00, we reach a 7, but it’s between 10:00 and 12:00 that we experience the peak, with the index soaring to an impressive 12. Gradually, the intensity begins to wane; by 13:00, it drops to 10, and further declines to 4 by 15:00. The sun's power diminishes steadily, settling back to 1 by 17:00 and finally reaching 0 after 18:00, inviting a gentle close to the day. With this data, it's clear that the midday hours are the best time to be cautious when exposed to the sun!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 10 | very high | 15 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 remains consistently high throughout the year, peaking from January to March with values reaching 16, indicating an extreme exposure category where burn time is just 10 minutes. February registers the highest index at 15, while April to July maintain similarly elevated readings around 12-15. August to October sees a slight decrease with values returning to 14-15, but still within the extreme range. Notably, the high-risk months span from January to March, making it essential for visitors and residents to exercise caution during outdoor activities. It's advisable to apply sunscreen regularly, wear protective clothing, and seek shade to reduce the risk of harmful UV exposure. As we approach the end of the year, while the UV Index gradually declines, proactive measures should remain a priority year-round to ensure skin 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 |
| Menjalin | 14 | 15 | 16 | 15 | 14 | 12 | 12 | 14 | 15 | 15 | 14 | 13 |