UV Index in San Isidro, Philippines

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents and visitors of San Isidro, Philippines, where the tropical climate means that UV exposure can peak dramatically throughout the day. With values soaring to a maximum of 13 around midday, awareness of these levels is essential for preventing sunburn and protecting skin health. This small but mighty scale not only helps you plan your outdoor activities but also serves as a reminder to take necessary precautions during peak UV hours—especially between 10 AM and 2 PM, when the risk is at its highest. Stay informed and enjoy the vibrant sunshine safely!

Hourly UV Index in San Isidro

The UV Index reveals a compelling narrative of sun intensity throughout the day. Early risers can expect a mild start at 7:00 AM with a UV Index of 2, gradually escalating to a moderate level of 4 by 8:00 AM. The sun's powerful grip tightens swiftly, hitting 7 by 9:00 AM and reaching its peak at a striking 13 from 11:00 AM to 12:00 PM. This zenith suggests it’s the ideal time to seek shade or don protective gear. As the afternoon progresses, the index gently retreats, dropping to 9 at 2:00 PM before falling to 5 by 3:00 PM. By 4:00 PM, it’s back to 2, trailing down to 0 by 6:00 PM, marking the day's end of significant sun exposure. Stay vigilant during those peak hours for safe outdoor enjoyment!

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	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

Monthly UV Index Trends in San Isidro

Throughout the year, the UV Index remains consistently high, indicating extreme exposure risk for both visitors and residents. The months with the highest UV readings peak in March and April, each reaching a UV Index of 16, accompanied by a burn time of just 10 minutes. High-risk months extend from January to June, with UV levels staying above 13. Notably, September through November still maintain a UV Index of 12 to 14, emphasizing the persistent risk into the fall. It is crucial for everyone to apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak hours to mitigate the risks associated with prolonged sun exposure.

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	13	14	16	16	14	13	13	14	14	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