Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Mojokerto, Indonesia, where the tropical climate brings a unique set of challenges regarding sun exposure. With peak UV levels reaching 9 during midday, awareness of these fluctuations can be a game-changer in preventing sunburn and protecting skin health. As you navigate the vibrant streets of Mojokerto, it's essential to recognize when the sun's rays are at their strongest to safeguard against potential skin damage. Tune in to the UV Index daily to enjoy all that the beautiful region has to offer while keeping your skin safe!
As the sun rises, the UV Index begins its climb, starting at a gentle 1 at 07:00, which poses minimal risk to skin. By 08:00, it reaches a moderate 3, signaling a gradual need for sun protection. The intensity peaks between 10:00 and 12:00, soaring to a high of 9 during this period, urging everyone to take caution under the midday sun. After the zenith hour, the index starts to fall, dropping to 7 by 13:00 and continuing its descent to 5 at 14:00. By late afternoon, the UV levels decrease significantly, bouncing back down to a 3 at 15:00, and dwindling to 1 by 17:00. As the sun sets, the UV Index finally falls to 0, marking the end of the day with minimal exposure risk. It's a day that starts with mild sunlight and peaks with strong rays, reminding us to stay vigilant about sun safety during those midday hours!
| 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 | 9 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 5 | moderate | 30 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 |
The data indicates significant seasonal variations in UV exposure, with the highest UV Index recorded in February (15) and March (14), both categorized as extreme. High-risk months extend from January through April, where the UV levels are consistently extreme, demanding vigilance and protection against sunburn with a rapid burn time of just 10 minutes. Even as the year progresses into June through August, while the UV Index lowers slightly, it remains in the extreme range during July and August. September to November also showcase extreme levels, emphasizing the need for ongoing sun safety measures. Visitors and residents should apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak hours, especially from January to April and September to November, to safeguard against harmful UV radiation.
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 |
| Mojokerto | 14 | 15 | 14 | 13 | 12 | 10 | 11 | 13 | 14 | 14 | 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 |