Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Kokas Kota, Indonesia, where the sun shines brightly under an Af climate. With UV levels peaking significantly around midday, awareness can help prevent sunburn and long-term skin health issues. During the sunny days, the UV Index can soar to 12, indicating very high levels of exposure that can cause damage in just minutes without protection. By monitoring these levels, you can better enjoy the tropical climate while safeguarding your skin from harmful rays throughout the day.
The UV Index throughout the day showcases a dramatic rise and fall in intensity, peaking at 12 around noon. Starting from a mild 1 at 07:00, it escalates to a noticeable 5 by 09:00 and skyrockets to a sizzling 11 at 11:00. The highest point occurs just after lunchtime, hitting 12 at 12:00, marking the most critical time for sun exposure. As the afternoon progresses, the index gradually declines, tapering off to 5 by 15:00, before retreating back to a safe 1 by 17:00. By 19:00, the UV Index drops to a 0, signaling a transition from day to night, reminding us to stay vigilant about sun safety during those peak hours.
| 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 | 11 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index remains consistently high, ranging from 14 to 17, indicating an extreme exposure category and a rapid burn time of just 10 minutes across all months. Notably, the high-risk months for UV exposure are from January to March, where the UV Index peaks at 17, signaling an urgent need for effective sun protection measures. As a result, it is crucial for both visitors and residents to take proactive steps to minimize UV exposure during these months. This includes wearing sunscreen, protective clothing, and seeking shade whenever possible. Individuals should remain vigilant year-round, as even outside of peak seasons, the potential for sunburn remains significant.
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 |
| Kokas Kota | 15 | 17 | 17 | 16 | 14 | 12 | 13 | 14 | 15 | 15 | 14 | 15 |