Last updated: June 2, 2025
In Bau, Indonesia, understanding the UV Index is crucial for protecting your skin and overall health. With a tropical climate that often sees high UV exposure, being aware of daily UV levels can help you prevent sunburn and reduce the risk of long-term skin damage. During peak hours, particularly around 11 AM to 1 PM, the UV Index can soar to a level of 10, indicating a very high risk of harm from unprotected sun exposure. By staying informed and taking necessary precautions, residents and visitors can enjoy the sunny days while safeguarding their skin health.
The UV Index throughout the day reveals a dynamic pattern of sun exposure. Early risers at 7:00 AM will find a gentle start with a UV index of 1, ramping up to 2 by 8:00 AM. The sun truly takes center stage by 10:00 AM, peaking at a notable 7. As the clock strikes 11:00 AM, the intensity reaches its zenith with a scorching 10, and remains unwavering at 10 through 12:00 PM and 1:00 PM. However, as afternoon transitions into evening, the intensity begins to wane, dipping to 7 by 2:00 PM and declining steadily afterward. By 6:00 PM, the UV index has fallen to 0, signaling a safe time to relax outdoors without the worry of sunburn. This data underscores the importance of sun protection during those high midday hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | 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 reveals significant seasonal variations, with extremely high levels persisting from January through April and again in July, August, September, October, and November. The months of January through April consistently show UV Index values between 15 and 16, indicating an exposure category of extreme, with a rapid burn time of just 10 minutes. In May, the index slightly drops to 12, but it remains in the extreme category until June, when it falls to a very high level of 10. Visitors and residents should be particularly cautious during the high-risk months of January, February, March, April, July, August, September, October, and November, all classified as extreme exposure months. To protect against skin damage, it is imperative to apply sunscreen, wear protective clothing, and limit sun exposure, especially during midday 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 |
| Bau | 15 | 16 | 16 | 15 | 12 | 10 | 12 | 13 | 15 | 15 | 15 | 15 |