Last updated: June 2, 2025
Understanding the UV Index in Tondongraja, Indonesia, is crucial for residents and visitors alike, as it directly influences skin health and sunburn prevention. With the region's tropical climate and high UV exposure levels, particularly between 10:00 AM and 2:00 PM when readings peak at 10, it’s vital to be aware of daily UV fluctuations. By monitoring the UV Index, individuals can take proactive measures to safeguard their skin from harmful rays, ensuring a healthy and enjoyable outdoor experience under the sun.
In the early hours of the day, the UV Index starts low, peaking at 1 at 07:00 before gradually rising as the sun climbs higher in the sky. By 10:00, it reaches a noteworthy 8, escalating to its maximum level of 10 at 11:00 and 12:00—the prime hours for sun exposure. As the afternoon progresses, the index begins to decline: 9 at 13:00, followed by a drop to 7 at 14:00. The late afternoon sees it further decrease, with values falling to 4 at 15:00 and down to 1 by 17:00. Finally, the UV Index falls to 0 after 18:00, marking the end of a sun-drenched day. Keep in mind, when the UV Index is high, it's crucial to protect your skin!
| 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 | 10 | very high | 15 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, the UV Index fluctuates significantly, with extreme exposure categories dominating the winter and early spring months. From January to April, the UV Index remains at a high 15-16, indicating a burn time of just 10 minutes. As we transition into summer, the intensity slightly decreases, with June witnessing a very high index of 10, allowing for a slightly extended burn time of 15 minutes. However, July and August revert back to extreme levels (12-13) with a burn time of 10 minutes once again. September and October see the UV Index hovering between 14-15, while slightly less intense than earlier months, still pose risks with a burn time of 10 minutes. As winter approaches in November and December, the levels remain fairly consistent, with a UV Index around 13-14. Given these data, it's crucial for visitors and residents alike to exercise caution and utilize sun protection measures during high-risk months, particularly from January through September. Regularly applying sunscreen, wearing protective clothing, and seeking shade during peak hours will help mitigate the 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 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |
| Tondongraja | 15 | 16 | 16 | 15 | 12 | 10 | 12 | 13 | 15 | 14 | 14 | 13 |