Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Mantang, Indonesia, where the tropical climate can expose you to harmful ultraviolet rays. With UV levels peaking at an intense 12 during midday, awareness becomes essential for protecting your skin from sunburn and long-term damage. By grasping the UV Index values throughout the day, you can better plan your outdoor activities and ensure skin health. Given Mantang's typically warm and sunny weather, being informed about UV exposure risks is not just beneficial—it's vital for enjoying the beautiful environment safely.
At 07:00, the UV Index starts off gently at 1, making it a great time for morning walkers. By 08:00, it rises to 2, still manageable for outdoor activities. The real intensity kicks in at 09:00, where the UV Index jumps to 5, signaling a need for increased sun protection. 10:00 marks the beginning of peak sun exposure with a UV Index of 8, reaching a dramatic high of 11 at 11:00. As the sun inches towards its zenith, it peaks at 12:00 with a maximum index of 12—a strong reminder to be cautious! The afternoon sees a slight decrease, with 11 at 13:00, followed by a dip to 9 at 14:00. The intensity of the sun gradually fades, dropping to 5 by 15:00, and tapering off to 2 at 16:00. By 17:00, it’s down to 1, and finally, the UV Index relaxes into the evening, hitting 0 by 18:00 and remaining there through 19:00. Remember, the hours around midday are the most potent for UV rays, so prioritize sun safety during those peak times!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | 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 alarmingly high, consistently categorized as extreme from January to December. January through April exhibit some of the most intense UV levels, peaking at 16 in both February and March, which indicates a burn time of only 10 minutes. Even during May to August, with slightly lower indices ranging from 11 to 13, the risk remains significant due to the persistent exposure category. As the year progresses into September and October, the UV Index returns to 15, signaling continued high risk, before tapering off in November and December at the same level. Given this data, it is crucial for visitors and residents to prioritize sun safety. Always wear sunscreen, protective clothing, and limit sun exposure, especially during the high-risk months of winter and spring when the UV levels are at their peak. Staying vigilant is essential to reduce the risk of skin damage 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 |
| Mantang | 15 | 16 | 16 | 15 | 13 | 11 | 12 | 13 | 15 | 15 | 15 | 15 |