UV Index in San Juan, Philippines

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in San Juan, Philippines, where the sun shines brightly and the climate is predominantly tropical. With UV levels reaching a maximum of 14 at midday, awareness of these readings is vital for effective sunburn prevention and overall skin health. Knowing when UV exposure peaks helps individuals take necessary precautions against harmful rays that can lead to skin damage and long-term health issues. In this beautiful coastal city, where outdoor activities abound, being informed about the UV Index can make all the difference in enjoying the sun safely.

Hourly UV Index in San Juan

The UV Index today paints a vivid picture of sun intensity throughout the day. Early risers will experience a gentle start at 07:00 with a low of 2, slowly escalating to a more noticeable 4 by 08:00. As the sun climbs higher, the UV Index reaches a peak of 14 at 12:00—the critical midday moment when sun protection is essential. From there, it begins to taper off, dropping to 12 at 13:00 before plunging down to 1 by 17:00. As evening approaches, UV exposure decreases, ultimately settling at 0 by 19:00. Remember to stay sun-safe 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	4	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	14	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 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 variability, with extreme levels persisting from January to October. The highest indices occur in April and August, both reaching 15, indicating a high risk for harmful UV exposure. March and September follow closely at 14, maintaining consistent 10-minute burn times during these months. December sees a slight decrease to a very high UV Index of 9, allowing for a marginally longer burn time of 15 minutes. Therefore, visitors and residents are strongly advised to take precautionary measures—such as using sunscreen, wearing protective clothing, and seeking shade—especially from January to October, as the risk of skin damage is considerably elevated during this period.

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	11	13	14	15	13	14	14	15	14	13	11	9
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