Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Tanjungbalai, Indonesia, where the tropical climate can lead to varying levels of sun exposure throughout the day. With UV levels peaking at 12 around midday, awareness of these fluctuations is essential for preventing sunburn and protecting your skin health. Knowing how to navigate the risks posed by the sun's harmful rays not only helps in avoiding immediate discomfort but also promotes long-term well-being. As you enjoy the warm, vibrant atmosphere of Tanjungbalai, staying informed about UV conditions can help you make safer choices for outdoor activities.
The hourly UV Index data reveals an intriguing pattern of sun exposure throughout the day. Starting low at 1 by 07:00, the UV Index gradually climbs, peaking at a striking 12 between 12:00 and 13:00. This midday surge signals a time of heightened caution, as UV rays pose the greatest risk. As the afternoon progresses, the index gradually descends, dropping to 3 by 16:00 and ultimately falling to 0 by 19:00. For optimal sun safety, it’s wise to seek shade and wear protective gear during the peak hours, particularly when the index hits 10 or above.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 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 demonstrates relatively high levels of UV radiation throughout the year, with extreme exposure categories persisting consistently across all months. The highest risk months are February and March, reaching a peak UV Index of 15, while other high-risk periods, including April and August, also experience a UV Index of 14. Residents and visitors should be vigilant during these months, as the burn time is notably short at just 10 minutes. It is crucial to take protective measures such as wearing sunscreen, sunglasses, and protective clothing, particularly during midday hours, to prevent harmful skin 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 |
| Medan UVI | 13 | 15 | 15 | 15 | 14 | 12 | 12 | 13 | 14 | 14 | 13 | 12 |
| Tanjungbalai | 12 | 15 | 15 | 15 | 14 | 12 | 12 | 14 | 14 | 14 | 13 | 12 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |