Last updated: June 2, 2025
Understanding the UV Index in Weleri, Indonesia, is crucial for maintaining skin health and preventing sunburn. With the region's tropical climate, UV exposure can be intense, especially around noon when levels peak at 10—indicating a very high risk of harm from unprotected sun exposure. By staying aware of the UV levels throughout the day, residents can take proactive measures to protect themselves from potential skin damage. Whether you’re soaking in the sun or enjoying outdoor activities, knowing when to seek shade or apply sunscreen can make a significant difference in your skin’s health and overall well-being.
As the sun rises, the UV Index starts off at a gentle 1 at 07:00, making it a safe time to enjoy outdoor activities. However, as the morning progresses, the index climbs sharply, reaching 3 by 08:00 and hitting 6 by 09:00. The peak exposure occurs from 11:00 to 12:00, where it reaches its maximum of 10, indicating a high risk for harm from unprotected sun exposure. By the afternoon, a gradual decline begins: 8 at 13:00, followed by 5 at 14:00, before tapering off to 3 at 15:00. As the day winds down, UV levels decrease to 1 by 16:00 and drop to 0 after 18:00, making late evening a soothing time to relax outdoors without sun concerns. Always 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 | 8 | 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 remains consistently high, with values peaking between 14 and 15 from January to March, indicating an extreme exposure category and a minimal burn time of just 10 minutes. The risk remains high through April and May, gradually tapering to 12 and 11 in the summer months of June and July before rising again in September and October. Notably, the months between January and April are particularly dangerous for sun exposure. Visitors and residents are strongly advised to take precautions during these high-risk months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade to minimize UV exposure. It’s essential to remain vigilant throughout the year, especially as the UV Index consistently denotes a risk of harm from unprotected sun exposure.
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 |
| Weleri | 14 | 15 | 15 | 13 | 12 | 11 | 11 | 12 | 13 | 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 |