Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Gajrug, Indonesia, where the tropical climate can lead to elevated UV exposure. With UV levels peaking sharply around midday, reaching an alarming 10 by noon, being aware of these fluctuations can significantly impact sunburn prevention and overall skin health. Gajrug’s blend of warm temperatures and abundant sunshine heightens the risk of harmful UV radiation, making it essential to monitor these indices for safe outdoor activities. By staying informed, you can enjoy the beautiful outdoors while protecting your skin from potential damage.
As the sun rises, the UV Index begins its daily ascent, starting at a gentle 1 at 07:00. It climbs steadily, reaching 2 by 08:00, before making a significant leap to 5 at 09:00. The intensity peaks around midday, hitting a remarkable 10 from 11:00 to 13:00—a clear signal to protect your skin. Following this zenith, the UV Index gradually declines; it drops to 7 by 14:00, then further decreases to 4 at 15:00, and continues its descent to 2 and 1 in the late afternoon. By 18:00 and 19:00, the UV levels settle at 0, signaling that the sun is setting and the day’s UV exposure has passed. Remember, during peak hours, it’s crucial to wear sunscreen and seek shade to ensure your safety in the sun!
| 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 | 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 experiences significant seasonal changes, with notably high-risk months dominated by extreme exposure levels from January through December, peaking at 16 in February and March. Throughout the year, the burn time remains dangerously low, with most months allowing only 10 minutes of sun exposure before risking harm, except for July which permits slightly longer exposure of 15 minutes. Given these levels, it is crucial for visitors and residents to take precautions year-round, such as wearing protective clothing, applying high-SPF sunscreen, and seeking shade during peak hours, especially from January to April and during the late summer months. Prioritizing skin safety is essential to enjoy outdoor activities without the adverse effects of UV radiation.
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 |
| Gajrug | 15 | 16 | 16 | 15 | 12 | 11 | 10 | 11 | 13 | 15 | 15 | 14 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |