Last updated: June 2, 2025
Understanding the UV Index is crucial for everyone in Barus, Indonesia, where the sun's rays can pose significant risks, particularly during its peak hours. As residents and visitors of this tropical region enjoy the lush landscapes and warm climate, it's essential to recognize that high UV levels—often reaching a maximum of 13 at midday—can lead to severe sunburn and long-term skin health issues. By staying informed about UV levels throughout the day, individuals can take proactive steps to protect themselves from harmful exposure, ensuring that their time in Barus is both enjoyable and safe. Given the area's tropical Af climate, understanding these UV risks becomes even more important to maintain a healthy skin routine amidst frequent sun exposure.
As the sun rises, the UV Index begins its climb, starting at a mild 1 by 7:00 AM. By 9:00 AM, it reaches a moderate 5, but it’s from 10:00 AM to 1:00 PM that the UV rays pack a punch, peaking at a staggering 13 at 12:00 PM. This intense exposure persists slightly into the afternoon, with levels at 12 and 10 from 1:00 to 2:00 PM before gradually tapering off. By 3:00 PM, the UV Index drops to a safer 7, then continues to decline throughout the evening, falling back to 1 by 5:00 PM and reaching zero by 7:00 PM. Remember, during peak hours, it’s crucial to protect your skin from those harmful rays! 🌞
| 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 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 7 | high | 25 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, UV Index values indicate an extreme risk of harm from unprotected sun exposure, particularly between January and October. The highest UV Index is recorded in March and April at 16, signaling these months as critical periods for potential sunburn, with a burn time of merely 10 minutes. While May to August maintains a consistent UV Index around 13 to 15, caution is still essential as these months also pose high risk. As the year progresses, September to November experiences slightly reduced levels, yet the UV Index remains at extreme levels around 14 to 15, reinforcing the need for protective measures. Residents and visitors are strongly advised to use sunscreen, wear protective clothing, and seek shade during peak sunlight hours to minimize the risk of UV-related health issues.
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 |
| Barus | 14 | 15 | 16 | 16 | 15 | 13 | 13 | 14 | 15 | 15 | 14 | 13 |