Last updated: July 2, 2025
In Banjarnegara, Indonesia, staying aware of the UV Index is crucial for safeguarding your skin against harmful ultraviolet rays. Understanding UV levels helps to effectively prevent sunburn and maintain long-term skin health, especially in a region known for its tropical climate and high UV exposure risks. With peak UV Index readings reaching a staggering 11 around noon, it’s essential for residents and visitors alike to take proactive measures to protect themselves from overexposure. By monitoring the UV levels throughout the day, you can enjoy the sunny pleasures of Banjarnegara while prioritizing your well-being.
The UV Index (UVI) throughout the day reveals a dynamic pattern of sun exposure. Beginning at 07:00, the index starts modestly at 1, but by 08:00, it gains momentum, reaching 3. The real intensity kicks in around 09:00, with a notable 6, peaking at 11:00 and 12:00 with a maximum UV index of 11, signaling the most hazardous hours for sun exposure. As the afternoon progresses to 13:00, the index begins to decline, dropping back to 9 at this hour. By 14:00, it eases further to 7 and continues its descent, settling at 4 by 15:00. As the day winds down, the readings fall to 2 by 16:00, tapering to a gentle 1 at 17:00, and finally retreating to 0 by 18:00 and 19:00. This journey through the UV Index highlights the importance of sun protection, particularly during those peak hours when it reaches its zenith.
| 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 | 11 | extreme | 10 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 9 | 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 |
Throughout the year, UV Index values remain notably high, particularly from January to October. The UV Index peaks in March at 16, marking it as a critical time for sun exposure, categorized as extreme with a burn time of just 10 minutes. April, September, and November also maintain high levels at 14 to 15, while May experiences a slight dip to 12. The months of January, February, July, August, and October consistently show extreme levels, urging visitors and residents to exercise caution when outdoors. Particularly during these high-risk months, it's vital to adopt protective measures such as wearing hats, sunglasses, and sunscreen, and seeking shade to help mitigate the effects of intense UV radiation. As a general guideline, individuals should remain vigilant, especially during midday hours, to avoid skin damage and health risks associated with high 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 |
| Banjarnegara | 14 | 15 | 16 | 14 | 12 | 10 | 11 | 13 | 14 | 15 | 15 | 14 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |