Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Boto, Indonesia, where the climate is classified as Aw—characterized by warm temperatures and distinct wet and dry seasons. With the potential for high UV exposure, particularly between 10 AM and 2 PM when levels can soar up to 11, being aware of UV radiation is key to preventing sunburn and protecting skin health. As you enjoy the beautiful outdoors, it's essential to monitor UV levels daily to safeguard your skin against harmful effects while embracing the vibrant sunshine that Boto has to offer.
Starting off the day, the UV Index begins at a mild 1 at 07:00, ideal for morning strolls. As the sun climbs higher, the intensity picks up, reaching 3 by 08:00 and surging to a notable 6 by 09:00. The peak occurs around 12:00 when the UV Index hits a strong 11, signaling the need for sun protection. After midday, the index gradually declines, falling to 9 by 13:00, then dipping to 6 at 14:00. As the afternoon wanes, levels continue to drop, hitting 3 at 15:00, before dropping back to 1 by 16:00 and finally settling to 0 after 18:00. This pattern highlights the importance of sun safety during the peak hours from 11:00 to 13:00.
| 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 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index remains consistently high, categorized as extreme, with minimal fluctuation in burn time—averaging just 10 minutes of unprotected sun exposure before sunburn occurs. The high-risk months for UV exposure span from January to March, where the index reaches a peak of 16, and persists notably throughout the year, especially in September and November with values of 15. Residents and visitors are strongly advised to take necessary precautions during these months, including wearing protective clothing, using broad-spectrum sunscreen, and seeking shade whenever possible, as even short periods of exposure can lead to serious skin damage.
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 |
| Boto | 15 | 16 | 16 | 14 | 12 | 11 | 12 | 13 | 15 | 15 | 15 | 14 |