Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Butterworth, Malaysia, where the tropical climate can expose individuals to harmful ultraviolet radiation. Awareness of UV levels not only helps in preventing sunburn but also plays a vital role in maintaining skin health over time. With UV indices often peaking at 12 during midday, it’s important to recognize the risks associated with high UV exposure in this region—particularly for outdoor activities. By monitoring daily UV levels, you can take proactive steps to protect yourself and enjoy the sunshine safely in this vibrant locale.
The UV Index throughout the day presents a captivating journey of sun exposure. Starting from a calm 0 at 7:00 AM, the intensity gradually rises, hitting 1 by 8:00 AM, signifying the sun's gentle awakening. As the clock strikes 10:00 AM, a notable increase to 5 indicates a more pronounced presence of UV rays. The peak occurs at 12:00 PM, where the index reaches a striking 11, suggesting it's time to seek shade and protect your skin. A brief moment of intensity persists until 2:00 PM, where it maintains a high of 12. The afternoon shows a decrease; by 4:00 PM, it's down to 6, and as the sun sets, the index gently falls to 1 at 6:00 PM, before concluding the day at 1 by 7:00 PM. Throughout this radiant cycle, awareness and precaution are essential to enjoy the sunshine safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index remains consistently high, indicating an extreme exposure category with a burn time of just 10 minutes across all months. Notably, the highest UV readings occur from February to April, with peaks of 15, making these the high-risk months for sun-related health issues. Despite a slight decrease in the index during summer and fall, the risk remains significant, particularly in March and February. Visitors and residents are strongly advised to take proactive measures to protect their skin, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours, ensuring safety against harmful UV radiation all year round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kampung Baru Subang UVI | 13 | 15 | 15 | 14 | 13 | 12 | 12 | 13 | 14 | 14 | 13 | 12 |
| Klang UVI | 13 | 15 | 15 | 14 | 13 | 12 | 12 | 13 | 14 | 14 | 13 | 12 |
| Kuala Lumpur UVI | 13 | 15 | 15 | 14 | 13 | 12 | 12 | 13 | 14 | 14 | 13 | 12 |
| Butterworth | 13 | 15 | 15 | 14 | 14 | 13 | 12 | 13 | 14 | 14 | 12 | 12 |
| Kota Bharu UVI | 13 | 15 | 16 | 15 | 14 | 13 | 12 | 13 | 14 | 14 | 12 | 12 |
| Johor Bahru UVI | 13 | 15 | 16 | 14 | 13 | 12 | 12 | 13 | 14 | 14 | 13 | 13 |