Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Randudongkal, Indonesia, where the tropical climate brings about significant sun exposure. Awareness of UV levels helps in preventing sunburn and maintaining skin health, especially when considering the highest UV Index readings peak at 10 around midday. During these hours, the risk of harmful effects from UV radiation is at its greatest, making it essential to take protective measures. With a climate classified as Am, Randudongkal experiences hot and humid conditions, meaning that understanding and monitoring UV exposure is vital for safe outdoor activities and long-term skin protection.
From sunrise to sunset, the UV Index tells a compelling story of the day's sun. Starting at a gentle 1 at 07:00, the UV levels gradually rise, peaking at an intense 10 by 11:00 and 12:00. This signifies a critical window for sun safety, as exposure during these hours demands caution. Just after noon, the index begins to decline, slipping to 9 at 13:00 and further down to 6 by 14:00. As the evening approaches, the numbers diminish swiftly to 4 at 15:00, and finally taper off to a relaxing 1 by 17:00, with complete relief from UV exposure by 19:00 when it hits 0. It's clear that being sun-smart is essential especially during the midday peak!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 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 | 6 | 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 values throughout the year reveal significant seasonal changes in UV exposure. From January to April, the index remains extremely high, peaking at 15 in both February and March, with a rapid burn time of just 10 minutes. As spring progresses into summer, from June to July, the index dips slightly to 10, categorized as very high, allowing for an increased burn time of 15 minutes. However, it rises again in August and returns to extreme levels in September, October, and November, maintaining a swift burn time of 10 minutes. Residents and visitors should be particularly vigilant from January to April and again in the late summer and early fall months, practicing sun safety by seeking shade, wearing protective clothing, and applying sunscreen frequently.
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 |
| Randudongkal | 14 | 15 | 15 | 13 | 12 | 10 | 10 | 12 | 14 | 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 |