UV Index in San Juan, Philippines

Last updated: June 2, 2025

In San Juan, Philippines, paying attention to the UV Index is crucial for maintaining healthy skin and preventing sunburn. With peak UV levels reaching a staggering 13 around noon, understanding these fluctuations helps residents and visitors alike protect themselves from harmful UV radiation. San Juan’s tropical climate offers plenty of sunshine, which, while delightful, brings with it significant exposure risks. Armed with UV Index knowledge, you can enjoy the outdoors while prioritizing your skin health—staying safe in the sun has never been more important!

Hourly UV Index in San Juan

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 Juan

The UV Index exhibits high levels throughout the year, with values consistently in the extreme category (12-16), signaling a significant risk for skin damage from sun exposure. The highest UV Index values occur from March to May, reaching up to 16 in both March and April, indicating these months are particularly high-risk for sunburn, with a dangerously short burn time of just 10 minutes. June through October also reflect a stable UV Index of 13 to 14, maintaining this high-risk nature. To protect themselves, visitors and residents are advised to take precautions during these months by wearing sunscreen, protective clothing, and seeking shade during peak sun hours to reduce the risk of skin damage.

Monthly Maximum UV Index for San Juan, Philippines

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Juan. 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 Juan, 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 Juan UV Index with Other Philippines Cities

The table above highlights how UV exposure in San Juan 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 Juan'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 Juan	12	14	16	16	14	13	14	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