UV Index in San Isidro, Philippines

Last updated: June 2, 2025

Understanding the UV Index in San Isidro, Philippines is crucial for ensuring the health and well-being of its residents and visitors. The UV Index indicates the level of ultraviolet radiation exposure, helping individuals take proactive measures against sunburn and long-term skin damage. With San Isidro's tropical climate, characterized by strong sunlight, the UV levels can soar to a maximum of 13 during midday, posing significant risks to skin health. By staying informed about UV levels throughout the day, you can effectively protect yourself while enjoying the vibrant outdoors that San Isidro has to offer.

Hourly UV Index in San Isidro

The UV Index chart for the day reveals a dramatic ascent in solar intensity as the sun rises. Starting at a low 2 at 07:00, the index builds momentum, hitting 5 by 08:00, and surging to a peak of 13 from 11:00 to 12:00. During this crucial midday window, the sun is at its zenith, signaling the best time for sun protection measures. As the afternoon progresses, the index begins to decline, dropping back to 5 by 15:00, and further down to 0 by 19:00. This data serves as a friendly reminder to embrace the sunshine cautiously and stay protected during those peak hours!

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	5	moderate	30 min
09:00	8	very high	15 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	13	extreme	10 min
13:00	11	extreme	10 min
14:00	8	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 in the area remains consistently extreme, peaking between February and March with values reaching up to 16. The high-risk months for UV exposure are primarily from January to April, where the UV Index fluctuates between 13 and 16, indicating severe potential for skin damage within just 10 minutes of unprotected sun exposure. While May to August witness slightly lower UV values (ranging from 14 to 13), caution is still crucial. September marks another peak at 15, gradually decreasing to 12 in November and 11 in December. Visitors and residents are strongly advised to wear protective clothing, use sunscreen, and seek shade during peak sun hours, particularly from late winter to early spring, to minimize the risk of harmful UV 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	15	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