Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Langsa, Indonesia, where the tropical climate brings intense sunlight year-round. With midday UV levels soaring to a maximum of 12, awareness of these ultraviolet radiation levels is essential for sunburn prevention and maintaining long-term skin health. By recognizing the risks associated with the high UV exposure, especially during peak hours from 10 AM to 2 PM, you can take proactive steps to protect your skin and enjoy the beautiful, sun-kissed days in this vibrant city.
The UV Index for today displays a notable increase, reaching its peak at 12 between 12:00 PM and 1:00 PM, signaling a high risk of harm from unprotected sun exposure. As the day begins, the index starts at a mild 1 at 7:00 AM, gradually climbing to 4 by 9:00 AM. A sharp rise occurs by 10:00 AM, hitting 7, before soaring to an intense 10 at 11:00 AM. After the zenith from 12:00 PM to 1:00 PM, the index gradually declines, dipping to 7 by 3:00 PM, then back down to 4 at 4:00 PM, before closing the day at 0 by 7:00 PM. With such elevated UV levels during the midday hours, it’s crucial to take precautions—seek shade, wear protective clothing, and apply sunscreen to ensure safety while enjoying the outdoors!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 13 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index data reveals significant seasonal variations, with the highest values occurring from February to May, indicating a period of extreme sun exposure. Specifically, February through April peak at a UV Index of 15, prompting caution as the burn time is just 10 minutes for unprotected skin. June to August see slightly lower readings, but the UV Index remains extreme at 12 to 13. Significant UV levels persist in September and October with values around 14, before tapering off in the cooler months. Visitors and residents are strongly advised to take protective measures, such as wearing sunscreen, protective clothing, and seeking shade, particularly from February to May and during midday hours throughout the year. Staying aware of these high-risk months is crucial to minimize the risk of skin damage and ensure safe outdoor activities.
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 |
| Langsa | 13 | 15 | 15 | 15 | 15 | 13 | 12 | 13 | 14 | 14 | 13 | 12 |
| Bandung UVI | 15 | 16 | 16 | 15 | 12 | 11 | 11 | 12 | 14 | 15 | 15 | 14 |