Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Calaca, Philippines, as it provides vital information about sun exposure and skin health. With the tropical climate typical of this coastal town, UV levels can soar, especially between 10 AM and 2 PM, peaking at 14—a level that signifies a high risk of harm from unprotected sun exposure. By being aware of these UV levels, you can effectively prevent sunburn and protect your skin from long-term damage. Knowing when to seek shade or apply sunscreen is essential for enjoying the beautiful Philippine sunshine while keeping skin safety in mind.
As the sun rises, the UV Index begins its ascent, starting from a gentle 1 at 07:00. By 08:00, it ramps up to 4, signaling a day where sun protection becomes important. The intensity peaks dramatically at 12:00 with a staggering 14, the highest point of the day. At 11:00, just before the max, the index hits 13, making midday dangerously bright. After the zenith, the UV levels gradually decline, dropping to 10 by 14:00, and continuing down to 6 at 15:00. As the evening sets in, the index slips to a safe 1 by 17:00, and finally settles at 0 by 19:00, marking the end of the intense UV exposure. It's a reminder that staying vigilant with sun safety is crucial, especially during those peak hours!
| 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 | 13 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 6 | 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 |
The UV Index exhibits extreme levels throughout most of the year, with particularly high values during the spring and summer months from March to October, peaking at 15 in March. Notably, February through August maintain a consistent UV Index of 13 to 15, indicating that the risk of harm from unprotected sun exposure is significant. Residents and visitors should prioritize sun safety during these high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during peak hours. Although November and December see a slight decrease in UV levels, caution is still advised, as even in winter months, the UV Index remains very high to extreme. Always consider a max burn time of 10-15 minutes based on the month when planning outdoor activities.
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 |
| Calaca | 11 | 13 | 15 | 14 | 13 | 14 | 14 | 14 | 14 | 13 | 11 | 10 |
| 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 |