Last updated: July 2, 2025
Understanding the UV Index is crucial for the residents of Letung, Indonesia, where the tropical climate brings intense sunlight year-round. Monitoring UV levels not only helps in preventing sunburn but plays a vital role in protecting your skin health from the harmful effects of overexposure. With peak UV Index values soaring to 13 around noon, it's essential to be aware of the risks associated with outdoor activities during the hottest hours. Awareness of the UV Index empowers you to enjoy the beautiful sunny days in Letung while safeguarding your wellbeing.
The UV Index varies significantly throughout the day, peaking between 12:00 PM and 1:00 PM at a striking 13—a clear signal to take precautions if you're outdoors. Starting the morning with a mild 1 at 7:00 AM, the UV levels rise steadily, reaching 6 by 9:00 AM and climbing to a critical high of 12 by 11:00 AM. After the noon peak, there's a gradual decline, with values falling to 5 at 3:00 PM, and ultimately dropping back to 1 by 5:00 PM and remaining low past sunset at 6:00 PM and 7:00 PM, where the index hits 0. Keep in mind this rhythm of UV exposure, as it underscores the importance of sun protection during the midday 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 | 12 | extreme | 10 min |
12:00 | 13 | extreme | 10 min |
13:00 | 12 | extreme | 10 min |
14:00 | 9 | very high | 15 min |
15:00 | 5 | moderate | 30 min |
16:00 | 3 | moderate | 30 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, reflecting an extreme exposure category with a burn time of just 10 minutes across all months. February and March see peak UV levels at 15 and 16, respectively, indicating they are among the highest risk months for sunburn and UV-related skin damage. Even during the cooler months, such as November and December, the UV Index stays relatively elevated at 13 and 12. Therefore, it is crucial for both visitors and residents to take protective measures year-round, including wearing sunscreen, protective clothing, and seeking shade to minimize direct sun exposure, especially during midday hours.
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 |
Letung | 13 | 15 | 16 | 16 | 14 | 13 | 13 | 14 | 14 | 14 | 13 | 12 |