Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Tiom, Indonesia, as it serves as a key indicator of the potential harm from sun exposure. Awareness of UV levels can significantly aid in sunburn prevention and promote long-term skin health, allowing you to enjoy the vibrant outdoors without the painful consequences. Tiom's Cfb climate often leads to heightened UV exposure, especially around midday when the index can soar as high as 14. With this knowledge, you can better prepare and protect yourself against the sun's harmful rays, ensuring a safer and more enjoyable experience under the tropical sun.
The UV Index throughout the day showcases a dramatic rise and fall in intensity, peaking during the midday hours. Starting at a mild 1 at 07:00, the index climbs steadily, reaching a vibrant 14 by 12:00—the height of sun exposure. 11:00 and 12:00 are particularly notable, with readings of 13 and the maximum of 14, highlighting the urgency for sun protection during these hours. As the afternoon progresses, the UV Index begins to decline, cooling down to 5 by 15:00, before dropping to a gentle 1 by 17:00 and diminishing to 0 after 18:00. This fluctuation serves as a crucial reminder for outdoor enthusiasts to be mindful of sun safety, especially between 10:00 and 14:00 when the sun’s rays are at their strongest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 14 | 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 |
Throughout the year, the UV Index remains consistently high, indicating extreme exposure levels for nearly all months. From January to April, the UV Index peaks at 19, marking these months as high-risk for sunburn with a minimal burn time of just 10 minutes. Although the index slightly decreases during the summer months of June to August, it remains above 14, maintaining a high-risk status. Late summer and autumn months, including September to November, still exhibit elevated levels, with indices around 17-18. Therefore, it is crucial for both visitors and residents to take necessary precautions year-round, such as wearing protective clothing, using sunscreen, and seeking shade, especially during midday hours to minimize 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 |
| Tiom | 18 | 19 | 19 | 19 | 16 | 14 | 14 | 15 | 17 | 17 | 17 | 16 |