Last updated: July 2, 2025
In Rantepang, Indonesia, understanding the UV Index is crucial for safeguarding your skin and overall health. With its tropical Af climate, residents and visitors face varying levels of UV exposure throughout the day, peaking at a high of 13 between noon and 1 PM. Being aware of these levels helps prevent sunburn and long-term skin damage. With UV indices reaching potentially harmful levels, knowing when to seek shade or apply sunscreen is essential for enjoying the beautiful Indonesian sun safely.
At dawn, the UV Index starts low at 1 by 7:00 AM, gradually climbing to 3 by 8:00 AM. The sun rises high, peaking at 13 around 12:00 PM, serving as a reminder to stay protected from the sun’s rays. The intensity begins to wane in the afternoon, dropping to 9 by 2:00 PM, and steadily declines to 1 by 5:00 PM. As evening approaches, the UV Index falls to 0 by 6:00 PM, marking the end of a day with notable sun exposure. Remember, during peak hours—between 10:00 AM and 2:00 PM—it's crucial to take precautions to shield yourself from UV damage!
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 | 12 | extreme | 10 min |
12:00 | 13 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 9 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 3 | moderate | 30 min |
17:00 | 1 | low | 45 min |
18:00 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
Throughout the year, seasonal UV changes indicate consistently extreme exposure risk, with the highest UV Index values occurring from January to March, peaking at 17. Monthly indices remain high, ranging from 15 to 17, until the decline in late summer and autumn. High-risk months include January through April, where consistent burn times of just 10 minutes underline the urgency for protective measures. Visitors and residents should take proactive steps during all months, particularly in the early year, by wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak hours to mitigate the risk of 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 |
Rantepang | 16 | 17 | 17 | 16 | 15 | 12 | 13 | 14 | 15 | 16 | 15 | 15 |