Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Silab, Philippines, as it serves as a vital indicator of the harmful effects of ultraviolet rays from the sun. With high UV levels peaking between 10 AM and 1 PM—reaching a maximum of 13—being aware of these readings can help you take essential steps to prevent sunburn and maintain healthy skin. Silab's tropical climate generates significant UV exposure throughout the year, making it imperative for locals and visitors alike to monitor these levels to ensure their safety while enjoying the beautiful outdoors. By staying informed, you can confidently embrace the sun while safeguarding your skin health.
At dawn, the UV Index begins its climb, starting at a gentle 2 at 07:00. By 08:00, it rises to 4, signaling the start of a sunny day. However, the sun's intensity becomes more pronounced as the clock strikes 09:00, with the index hitting 8. The peak occurs between 10:00 and 12:00, where it surges to a blistering 13, urging sun-seekers to take precautions. As the afternoon progresses, the index gradually lowers to 9 at 14:00, and further descends to 5 by 15:00. By 16:00, it drops significantly to 2, and rolls down to 1 by 17:00. Finally, as twilight approaches, the UV Index hits 0 at 18:00, concluding a day that swung from mild to intense sun exposure—illustrating the importance of sun protection during peak hours.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 2 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 8 | very high | 15 min |
10:00 | 11 | extreme | 10 min |
11:00 | 13 | 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 | 2 | low | 45 min |
17:00 | 1 | low | 45 min |
18:00 | 0 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index remains consistently high throughout the year, with extreme exposure levels noted from January to November, and a slight decrease in December. The highest readings occur from March to April, peaking at UV Index 17, indicating a burn time of only 10 minutes. February and September also show notable highs at 14 and 15 respectively. To protect against severe sunburn and long-term skin damage, visitors and residents are advised to take precautions during these high-risk months, particularly from March to October. Wearing protective clothing, applying broad-spectrum sunscreen frequently, and seeking shade during peak hours are essential practices to ensure safety in such extreme UV conditions.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Caloocan City UVI | 11 | 13 | 15 | 15 | 13 | 14 | 13 | 14 | 14 | 13 | 10 | 10 |
Quezon City UVI | 11 | 13 | 15 | 15 | 13 | 14 | 13 | 14 | 14 | 13 | 10 | 10 |
Manila UVI | 11 | 13 | 14 | 14 | 13 | 13 | 13 | 14 | 14 | 13 | 10 | 10 |
Budta UVI | 13 | 15 | 16 | 16 | 14 | 13 | 14 | 14 | 15 | 14 | 13 | 11 |
Silab | 13 | 14 | 16 | 17 | 14 | 14 | 14 | 14 | 15 | 14 | 12 | 11 |
Davao UVI | 13 | 15 | 16 | 15 | 15 | 13 | 14 | 14 | 15 | 14 | 13 | 11 |