Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Jembrana Subdistrict, Indonesia, where the tropical climate and strong sunlight can pose significant risks. With UV levels peaking at 10 around midday, awareness of these levels is essential for preventing sunburn and protecting skin health. Even moderate UV exposure can lead to long-term skin damage, making it vital for locals and visitors alike to stay informed about UV fluctuations throughout the day. As you enjoy the sun-drenched beauty of Jembrana, knowing when to seek shade or apply sunscreen can help you make the most of your time outdoors while safeguarding your skin.
The UV Index for the day reveals a significant fluctuation in intensity, peaking at 10 during the midday hours (12:00 PM and 1:00 PM), indicating a high risk of harm from unprotected sun exposure. Early risers will find the sun’s rays quite mild at 1 and 2 between 7:00 AM and 9:00 AM. However, as the morning progresses, the UV intensity surges to 7 by 10:00 AM and reaches its zenith with a strong 9 at 11:00 AM. After the peak, the levels gradually decline, dropping to 5 by 3:00 PM, and diminishing to 1 by 5:00 PM, with the evening bringing a return to safety as it falls to 0 by 7:00 PM. Remember to protect your skin during the peak hours, especially between 11:00 AM and 1:00 PM!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 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 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index experiences significant fluctuations throughout the year, consistently remaining in the extreme or very high categories from January to November, with levels peaking in October at 16. The high-risk months for UV exposure are identified as February, March, September, and October, when UV Index values regularly reach 15 or higher, making a burn time of just 10 minutes critical for unprotected skin. Residents and visitors should exercise caution during these months, seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly. Alongside June and July, which feature slightly lower indices of 10 and 11 respectively, they still demand vigilance due to the prolonged sunlight exposure characteristic of summer. Being informed and prepared can help prevent harmful effects from UV radiation throughout the year.
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 |
| Jembrana Subdistrict | 14 | 15 | 15 | 14 | 12 | 10 | 11 | 13 | 15 | 16 | 14 | 14 |