Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Biris Daja, Indonesia, where the tropical climate brings varying levels of sun exposure throughout the day. With peak UV levels soaring to 11 at midday, awareness of these fluctuating values is essential for preventing sunburn and protecting skin health. By monitoring the UV Index, you can make informed decisions about outdoor activities and safeguard yourself against the harmful effects of overexposure to the sun. Given Biris Daja's typical climate, where sunshine can be intense, understanding the importance of UV levels is not just about comfort; it's about maintaining long-term health in an area where the sun shines bright.
As the day dawns, the UV Index starts off gently at 2 by 7:00 AM, making it a perfect time for a morning stroll. By 8:00 AM, it climbs to 4, encouraging early risers to enjoy the sunshine while being mindful of sun exposure. At 9:00 AM, it reaches 6, signaling that protection is advisable. By 10:00 AM, the index surges to a peak of 9, alerting everyone to the need for sunscreen as the sun is at its most intense. 11:00 AM brings the day's maximum UV Index of 11, a critical hour to seek shade or wear protective gear. As noon approaches, the UV Index dips slightly to 10 and begins a slow descent through the afternoon. By 1:00 PM, it rests at 8, then gradually falls to 5 at 2:00 PM, before continuing to decrease to 3 by 3:00 PM. As the sun starts its descent, the levels drop to 1 by 4:00 PM and remain mild through the evening, finally settling to 0 by 6:00 PM. Through this rollercoaster of UV exposure, staying informed and protected is key to enjoying outdoor activities safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 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 |
The UV Index exhibits extreme levels throughout the year, peaking in February, March, and September at a notable 15. This indicates a very short burn time of just 10 minutes across all months, suggesting that residents and visitors should exercise caution and take protective measures against sun exposure regardless of the month. The high-risk months overall remain from February to September, during which UV protection is particularly essential. It's advisable to wear sunscreen, sunglasses, and protective clothing, and to seek shade during peak daylight hours to minimize risks associated with excessive UV 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 |
| Biris Daja | 13 | 15 | 15 | 14 | 13 | 11 | 12 | 13 | 15 | 15 | 14 | 13 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |