UV Index in San Isidro, Philippines

Last updated: August 1, 2025

Understanding the UV Index in San Isidro, Philippines is crucial for safeguarding your skin against harmful ultraviolet rays. With the climate categorized as Af, residents and visitors alike experience intense sun exposure—especially during peak hours when UV levels soar to as high as 14. Being aware of the UV Index allows you to take proactive measures to protect yourself from sunburn and long-term skin damage, ensuring your outdoor activities are both safe and enjoyable. Regularly checking UV levels can help you plan your day effectively, minimizing the risks associated with sun exposure in this tropical paradise.

Hourly UV Index in San Isidro

The UV Index throughout the day presents a dynamic pattern of sun exposure. Starting at a mellow 2 at 7:00 AM, the index climbs steadily, reaching a moderate 4 by 8:00 AM. By 9:00 AM, it spikes to 8, signaling the need for sun protection. The peak occurs at 12:00 PM, hitting a scorching 14, making this the critical time for safety measures. The intensity gradually declines after 1:00 PM, as the UV Index dips to 12, followed by a notable drop to 5 by 3:00 PM. As the day winds down, the UV levels settle back to a low 1 by 5:00 PM, finally resting at 0 after sunset at 7:00 PM. Awareness of these fluctuations allows for safer outdoor activities and greater enjoyment of the sun.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
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	12	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

Monthly UV Index Trends in San Isidro

The UV Index exhibits significant seasonal changes, remaining consistently high throughout the year with extreme levels every month. January through April show the highest indices, peaking at 16 in April, while May to August maintain a steady 14. With the UV Index exceeding 13, the high-risk months for sun exposure are February through September. Visitors and residents should take precautionary measures, including wearing protective clothing, applying sunscreen with a high SPF, and seeking shade during peak hours to minimize the risk of sunburn, which can occur in just 10 minutes of exposure. Remember, UV safety is essential year-round, given the extreme exposure category.

Monthly Maximum UV Index for San Isidro, Philippines

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Isidro. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for San Isidro, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare San Isidro UV Index with Other Philippines Cities

The table above highlights how UV exposure in San Isidro compares to other major locations across Philippines. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Isidro's solar exposure compared to other cities in Philippines. Generated using Copernicus Atmosphere Monitoring Service information.
	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 Isidro	12	13	15	16	14	14	14	14	15	13	11	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