Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Rangah, Indonesia, where the tropical climate presents unique challenges related to sun exposure. Awareness of UV levels can help prevent painful sunburn and protect long-term skin health, making it vital for everyone to stay informed. With a typical peak UV Index reaching 11 between noon and 1 PM, Rangah experiences significant sun intensity, particularly during the dry season. By keeping an eye on the UV Index, you can enjoy the sunshine while safeguarding your skin from harmful effects.
The UV Index reveals a dynamic pattern throughout the day, peaking during the midday hours. At 07:00, the index starts low at 1, gradually rising to 2 by 08:00. Things heat up significantly by 10:00, soaring to 7, and reaching its maximum of 11 at 12:00 and 13:00—the perfect time for sun protection. As the afternoon sets in, the index gracefully declines, dropping to 8 at 14:00, then tapering off to 5 by 15:00, and further down to 3 at 16:00. By the time evening arrives, the UV Index returns to a safe 1 at 17:00 and further diminishes to 0 by 19:00. This fluctuation underscores the importance of vigilant sun safety, especially during those peak hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 2 | low | 45 min |
09:00 | 4 | moderate | 30 min |
10:00 | 7 | high | 25 min |
11:00 | 10 | very high | 15 min |
12:00 | 11 | extreme | 10 min |
13:00 | 11 | extreme | 10 min |
14:00 | 8 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 3 | moderate | 30 min |
17:00 | 1 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index shows consistently extreme levels from January through April and then again in July, August, September, October, November, and December, with high-risk months being consistently January through April, and September through November, where the burn time is just 10 minutes. Even in June, while the Index drops to 10 (very high), exposure should still be managed, with a slightly longer burn time of 15 minutes. Visitors and residents are advised to take precautionary measures year-round, such as wearing protective clothing, using sunscreen with high SPF, and seeking shade, especially during these high-risk months, to minimize the risk of UV exposure and potential 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 |
Rangah | 15 | 15 | 15 | 15 | 13 | 10 | 11 | 13 | 15 | 15 | 15 | 15 |