UV Index in San Juan, Philippines

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in San Juan, Philippines, where the tropical climate brings intense sunlight, especially during midday hours. With UV levels often soaring to a maximum of 14 between 11:00 AM and 12:00 PM, it's vital to be aware of the risks associated with sun exposure, including sunburn and long-term skin health issues. By staying informed about local UV levels, you can take proactive measures to protect your skin and enjoy the beautiful sunny days that San Juan has to offer while minimizing the dangers of overexposure.

Hourly UV Index in San Juan

The UV Index reveals a dramatic rise in sunlight intensity throughout the morning, peaking at an impressive 14 between 11:00 AM and 12:00 PM. This indicates a time when sun protection is vital, especially as it climbs swiftly from 2 at 07:00 AM to reach 8 by 09:00 AM, illustrating the day’s rapid increase in UV exposure. As the afternoon progresses, the index starts to decline, dropping to 5 at 3:00 PM before diminishing further to 1 by 5:00 PM and finally reaching 0 after 6:00 PM. Thus, the midday hours present the highest risk, calling for caution and proper sun safety measures!

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.
TimeUVICategoryTime to Burn
07:002low45 min
08:004moderate30 min
09:008very high15 min
10:0011extreme10 min
11:0014extreme10 min
12:0014extreme10 min
13:0012extreme10 min
14:009very high15 min
15:005moderate30 min
16:002low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in San Juan

The UV Index experiences extreme levels throughout the year, with a notable peak in March and April when it reaches a maximum of 16. High-risk months for UV exposure are from February to October, consistently maintaining an index of 12 or above, indicating a burn time of just 10 minutes. Residents and visitors are strongly advised to take protective measures, including wearing sunscreen, protective clothing, and seeking shade, especially during these high-risk months to minimize the risk of skin damage. Awareness of the UV Index is essential for enjoying outdoor activities safely all year round.

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.
JanFebMarAprMayJunJulAugSepOctNovDec131416161413141515141211
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.
 JanFebMarAprMayJunJulAugSepOctNovDec
Caloocan City UVI111315151314131414131010
Quezon City UVI111315151314131414131010
Manila UVI111314141313131414131010
San Juan131416161413141515141211
Budta UVI131516161413141415141311
Davao UVI131516151513141415141311