Last updated: June 2, 2025
In San Alfonso, Philippines, understanding the UV Index is crucial for protecting your skin and overall health under the tropical sun. With a predominantly Af climate, residents and visitors alike face heightened UV exposure, particularly during midday hours when levels can soar as high as 14. By being aware of these UV levels, you can take proactive steps to prevent sunburn, reduce the risk of skin damage, and promote long-term skin health. As you enjoy the beautiful surroundings, keeping an eye on the UV Index ensures that your time outdoors is not only enjoyable but also safe from harmful rays.
The UV Index throughout the day showcases a dramatic rise and fall, peaking at an intense 14 at 11:00 AM. Early morning starts off mild, with a maximum of 2 at 7:00 AM, gradually escalating to 5 at 8:00 AM and hitting 8 by 9:00 AM. The sun’s strength reaches its zenith at 12 and 13 between 10:00 AM and 12:00 PM, making it essential for outdoor enthusiasts to take precautions during these hours. Following the high noon glow, the index begins to decline, dropping to 11 by 1:00 PM and sliding down to 8 at 2:00 PM. As the afternoon progresses, the intensity wanes, with the UV Index falling to 4 by 3:00 PM and dipping to 2 at 4:00 PM. As evening sets in, it relaxes further, falling to 1 by 5:00 PM and finally 0 after 6:00 PM, signaling a safe end to the day for sun exposure.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 12 | extreme | 10 min |
| 11:00 | 14 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 4 | 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 |
During the year, the UV Index remains consistently high, reflecting an extreme exposure category and a burn time of just 10 minutes across all months. The highest UV readings occur from February to April, peaking at 16, making these the high-risk months for sun exposure. Visitors and residents are advised to take precautionary measures, such as wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sunlight hours. Staying informed about UV levels can help mitigate the risks associated with prolonged sun 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 |
| 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 |
| San Alfonso | 13 | 15 | 16 | 16 | 15 | 14 | 14 | 15 | 15 | 14 | 13 | 12 |