Last updated: August 1, 2025
In Siayan, Philippines, understanding the UV Index is crucial for safeguarding your skin and overall health. With its tropical climate and significant sun exposure, locals and visitors alike must stay informed about UV levels to prevent sunburn and long-term skin damage. As the sun climbs, the UV Index can soar to a staggering 13 during midday, presenting serious risks even on seemingly mild days. By familiarizing yourself with these levels, you can enjoy the beautiful outdoors while taking essential steps to protect your skin from harmful ultraviolet radiation.
The daily UV Index tells a story of the sun's dynamic intensity. Starting from a gentle 1 at 7:00 AM, it steadily climbs as the morning progresses. By 9:00 AM, conditions heat up, reaching 7 as outdoor enthusiasts start to feel the sun’s warmth. The peak intensity occurs between 11:00 AM and 12:00 PM, with a maximum UV Index of 13, signaling a high risk of harm from unprotected sun exposure. Post noon, a gradual decline sets in, with levels dropping to 5 by 3:00 PM, and tapering off to a safe 1 by 6:00 PM and 0 after sunset. It's crucial to take protective measures during those peak hours to enjoy the sun safely!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 7 | high | 25 min |
10:00 | 11 | extreme | 10 min |
11:00 | 14 | extreme | 10 min |
12:00 | 14 | 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 |
Throughout the year, the UV Index in the area remains consistently extreme, peaking between February and March with values reaching up to 16. The high-risk months for UV exposure are primarily from January to April, where the UV Index fluctuates between 13 and 16, indicating severe potential for skin damage within just 10 minutes of unprotected sun exposure. While May to August witness slightly lower UV values (ranging from 14 to 13), caution is still crucial. September marks another peak at 15, gradually decreasing to 12 in November and 11 in December. Visitors and residents are strongly advised to wear protective clothing, use sunscreen, and seek shade during peak sun hours, particularly from late winter to early spring, to minimize the risk of harmful UV exposure.
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 |
Siayan | 13 | 14 | 16 | 16 | 14 | 13 | 13 | 14 | 15 | 14 | 12 | 11 |
Budta UVI | 13 | 15 | 16 | 16 | 14 | 13 | 14 | 14 | 15 | 14 | 13 | 11 |
Davao UVI | 13 | 15 | 16 | 15 | 15 | 13 | 14 | 14 | 15 | 14 | 13 | 11 |