Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Ngulahan, Indonesia, where the tropical climate contributes to higher daily sun exposure. Awareness of UV levels helps to prevent sunburn and protects skin health, making it essential to check local UV forecasts. In Ngulahan, UV levels peak dramatically during mid-day, reaching a maximum of 10 between 11:00 AM and 12:00 PM, highlighting the importance of taking precautions during these hours. By staying informed about the UV Index, you can enjoy the beautiful outdoors safely while minimizing the risks associated with high UV exposure.
As the sun rises, the UV Index begins to climb, starting at a gentle 1 at 07:00. By 08:00, it escalates to a moderate 3, but the real intensity hits by 10:00, peaking at a striking 10 from 11:00 to 12:00—a clear signal for sun safety awareness. As the afternoon progresses, the index gradually declines, dipping to 8 at 13:00 and then swiftly dropping to 5 by 14:00. The evening brings relief, with levels decreasing to 3 at 15:00, and falling to 1 by 16:00. As the day fades away, the UV risk diminishes further, reaching 0 by 19:00. Remember to protect your skin during those peak 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 | 9 | very high | 15 min |
11:00 | 10 | very high | 15 min |
12:00 | 10 | very high | 15 min |
13:00 | 8 | very high | 15 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 |
Throughout the year, the UV Index exhibits significant seasonal variations, with extreme levels notably persisting from January to April, peaking in February at 16. These high levels continue through most of the warmer months, with July and August also recorded as high-risk months, indicating a UV Index as high as 13. While UV intensity decreases slightly in June, the very high exposure category still warrants caution with a burn time of just 15 minutes. As the year progresses into the fall and winter months, UV levels remain consistent around 14, categorized as extreme, emphasizing that even in colder months, UV protection is crucial. Therefore, residents and visitors should take proactive measures such as applying sunscreen, wearing protective clothing, and limiting sun exposure during peak hours, especially from January through September.
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 |
Ngulahan | 14 | 16 | 15 | 13 | 12 | 10 | 11 | 13 | 14 | 14 | 14 | 14 |
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 |