UV Index in Siay, Philippines

Last updated: May 3, 2025

Understanding the UV Index in Siay, Philippines is crucial for safeguarding your skin and overall health under the sun. With peak UV levels soaring to 14—especially between 10 AM and 1 PM—awareness of UV exposure can help prevent painful sunburns and long-term skin damage. Siay's tropical Am climate brings ample sunshine, making it essential to monitor these UV levels and take proactive measures during the sunniest hours. By being informed, residents and visitors can enjoy the outdoors while effectively protecting their skin from the intensity of UV radiation.

Hourly UV Index in Siay

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.
Time	UVI	Category	Time to Burn
07:00	2	low	45 min
08:00	4	moderate	30 min
09:00	8	very high	15 min
10:00	11	extreme	10 min
11:00	14	extreme	10 min
12:00	14	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	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Siay

Throughout the year, the UV Index remains consistently high in this region, with values ranging from 11 to 16 and categorized as extreme. Notably, the high-risk months are March through September, when the UV Index peaks at 16 in March and April, and stays around 14 to 15 from July through September. Residents and visitors should take stringent precautions during these months, ensuring adequate sun protection by utilizing sunscreen, wearing protective clothing, and limiting sun exposure, particularly around midday when the risk of burning is greatest at a burn time of just 10 minutes. It’s essential to stay informed and vigilant to safeguard skin health year-round.

Monthly Maximum UV Index for Siay, Philippines

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

The table above highlights how UV exposure in Siay 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.

Siay'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
Budta UVI	13	15	16	16	14	13	14	14	15	14	13	11
Siay	13	14	16	16	14	13	14	14	15	14	12	11
Davao UVI	13	15	16	15	15	13	14	14	15	14	13	11