UV Index in Siay, Philippines

Last updated: August 1, 2025

Understanding the UV Index in Siay, Philippines, is essential for protecting your skin from harmful ultraviolet rays. With UV levels peaking at 14 during midday, being aware of this index can significantly help in preventing sunburn and promoting long-term skin health. Siay's tropical climate brings high UV exposure risks, especially between 10:00 AM and 2:00 PM, making it crucial to monitor these levels to enjoy the sun safely. Stay informed and take the necessary precautions to safeguard your skin while basking in the warmth of this beautiful region.

Hourly UV Index in Siay

The UV Index data reveals a dynamic sun exposure scenario throughout the day. Beginning at 7:00 AM, the index hovers at a low 1, making it a safe time for early risers. As the sun climbs higher, the UV Index jumps to 4 by 8:00 AM, signaling a gradual increase in sun intensity. The peak occurs between 11:00 AM and 12:00 PM, where it reaches a staggering 14, emphasizing the need for sun protection during these hours. After noon, the index starts to decline, dipping to 12 at 1:00 PM and steadily dropping to 5 by 3:00 PM. The evening brings a welcome relief, as the index drops to 0 by 6:00 PM, marking a return to safer levels. Plan your outdoor activities wisely, especially during peak hours, to protect your skin from harmful UV radiation!

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	1	low	45 min
08:00	4	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	14	extreme	10 min
12:00	14	extreme	10 min
13:00	13	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