Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of San Rafael, Philippines, where the tropical climate brings intense sunlight and elevated UV exposure risks. With daily maximum UV levels that can reach as high as 14, awareness of these readings is essential for sunburn prevention and maintaining long-term skin health. Being informed about UV index levels helps you take proactive measures to protect yourself, especially during peak hours when UV radiation is most intense, typically from 10 AM to 2 PM. Embrace the sun safely by keeping an eye on the UV Index, and ensure your outdoor activities are both enjoyable and protective!
The UV Index for the day showcases a dynamic rise and fall, peaking in the early afternoon. From a gentle 2 at 7:00 AM, the index escalates to 11 by 10:00 AM, reaching its zenith of 14 at 12:00 PM. This is the point to be cautious; between 11:00 AM and 1:00 PM with values of 13 and 12 respectively, the midday sun is at its strongest. As the afternoon progresses, the UV Index declines, dropping to 9 at 2:00 PM, and continuing to diminish to 6 by 3:00 PM. The evening brings a welcome relief, with readings falling to 1 by both 5:00 PM and 6:00 PM, and finally settling at 0 as the day fades into night. Be sure to protect your skin during those 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 | 14 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | 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 |
Throughout the year, UV Index levels in this region show significant seasonal changes, particularly peaking from March to August with values ranging from 13 to 15, indicating an extreme exposure category and a swift burn time of just 10 minutes. The high-risk months for UV exposure are thus March, April, August, and September, which consistently maintain a high index of 14 or more. Residents and visitors are advised to take precautionary measures during these months, such as wearing sunscreen, protective clothing, and sunglasses, as well as seeking shade whenever possible to minimize the risk of skin damage. In contrast, while December sees a slightly lower UV Index of 10, it still presents a very high risk, underscoring the importance of sun protection even in the winter months.
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 |
| San Rafael | 11 | 13 | 15 | 15 | 13 | 14 | 14 | 15 | 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 |