UV Index in San Juan, Philippines

Last updated: June 2, 2025

In the vibrant city of San Juan, Philippines, understanding the UV Index is crucial for protecting your skin and overall health. With its tropical Am climate, residents and visitors face significant risks from intense ultraviolet radiation, especially during peak hours. Knowledge of UV levels is essential for preventing sunburn and reducing long-term skin damage. Throughout the day, particularly between 10:00 AM and 1:00 PM, the UV Index soars to dangerous heights, peaking at a staggering 13. By staying informed and taking proper precautions, you can enjoy the sunny days safely while safeguarding your skin's health.

Hourly UV Index in San Juan

The UV Index for the day showcases a dramatic rise as the sun climbs higher in the sky. Starting at a mild 2 at 07:00, it quickly escalates to a moderate 4 by 08:00, then soars to a striking 11 by 10:00. The peak intensity hits 13 at both 11:00 and 12:00, making it crucial for sun protection during those hours. As the afternoon progresses, the index begins to decline, dropping to 9 by 14:00 and tapering off to a gentle 5 at 15:00. As the day winds down, the UV Index falls to 2 at 16:00 and reaches a safe 0 by 19:00, signaling the end of the day's sun exposure. Be mindful during peak hours and enjoy the sunshine responsibly!

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	7	high	25 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	13	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	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in San Juan

The UV Index exhibits significant seasonal variations, remaining predominantly extreme throughout the year. From January to March, the index climbs steadily, peaking at 16 in both March and April, marking these months as particularly high-risk for sunburn with a burn time of just 10 minutes. May through October maintain an index between 14 and 15, followed by a slight decrease in November and December, where the index drops to 12 and 11, respectively. Visitors and residents should remain vigilant during these high-risk months, especially from January to April, and take necessary precautions such as wearing sunscreen, protective clothing, and sunglasses, to minimize UV exposure during outdoor activities.

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	14	14	14	15	13	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