Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Jogonalan, Indonesia, where the tropical climate brings intense sun exposure throughout the year. By keeping an eye on UV levels, you can take proactive steps to prevent sunburn and protect your skin health from the harmful effects of ultraviolet radiation. With maximum UV readings reaching 10 during midday hours, it’s essential to be aware of when to seek shade or apply sunscreen to avoid health risks. Whether you're enjoying a sunny day or exploring outdoor activities, knowing the UV Index can help you stay safe while making the most of Jogonalan’s vibrant environment.
The UV Index for the day shows a steady climb as the sun rises, hitting its peak between 11:00 AM and 12:00 PM with a maximum value of 10. During this peak period, caution is advised as UV radiation can be extremely harmful. As the afternoon progresses, the index begins a gradual decline, dropping to 8 by 1:00 PM and tapering off to 3 at 3:00 PM. As the sun sets, the UV Index decreases further, reaching 0 by 6:00 PM and remaining there for the evening, signaling a safe time to enjoy outdoor activities without the risk of overexposure. Remember to wear sunscreen and protective clothing during the peak hours!
| 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 | 10 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
During the year, UV levels are notably high, particularly from January to March and then again in September and October, where the UV Index reaches extreme levels of 15 to 16. The highest risk months for UV exposure are therefore deemed to be February, March, and October, where the UV Index consistently hits 16. Even during the summer months, such as June and July, the exposure category remains high, with burn times dropping to about 10-15 minutes depending on the month. As such, it is essential for both visitors and residents to take precautionary measures during these high-risk periods. Wearing sunscreen with a high SPF, donning protective clothing, and seeking shade during peak hours are highly advised to lower the risk of overexposure and skin damage. Stay vigilant and safe in the sun!
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 |
| Jogonalan | 15 | 16 | 16 | 14 | 13 | 10 | 11 | 13 | 15 | 16 | 15 | 14 |