Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Sukamaju, Indonesia, a region blessed with a warm, tropical climate yet also exposed to significant UV radiation. As the sun's rays reach their peak intensity between 10 AM and 1 PM, knowing the UV levels can be vital for sunburn prevention and maintaining long-term skin health. With UV Index values soaring to a maximum of 12 during midday, it's essential to stay informed about daily fluctuations to protect yourself from its harmful effects. This awareness becomes even more critical in a climate that typically encourages outdoor activities, making it necessary to adopt effective sun safety practices throughout the day.
At dawn, the UV Index starts with a gentle 1 at 7:00 AM, gradually rising to a moderate 3 by 8:00 AM. As the sun climbs higher, the index surges, reaching a peak of 12 at both 11:00 AM and 12:00 PM, indicating a strong need for sun protection during these hours. The intensity wanes in the afternoon, dropping to 8 at 2:00 PM, followed by a steady decline to 5 at 3:00 PM, and further down to 2 by 4:00 PM. As the day concludes, the UV exposure lessens drastically, with values retreating to 1 by 5:00 PM and ultimately dropping to 0 from 6:00 PM onward. This hourly data underscores the importance of midday sun safety practices, as the risk for skin damage is significantly heightened during the 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 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index data indicates extremely high UV levels throughout the year, with particularly elevated values from January to April, where the index consistently reaches between 16 to 17. Subsequently, while the index slightly decreases from May through July, it remains at a high range of 12 to 14. The UV Index then increases again from August to October, peaking at 15 and 16 before tapering off in November and December. Residents and visitors should be especially cautious during these high-risk months (January to April) due to the consistent extreme exposure category, with burn times as short as 10 minutes across the year. It is crucial to take protective measures against UV rays, including wearing sunscreen, protective clothing, and sunglasses, and avoiding prolonged sun exposure during peak hours.
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 |
| Sukamaju | 16 | 17 | 17 | 16 | 14 | 12 | 13 | 14 | 15 | 16 | 15 | 14 |