UV Index in Bulacan, Philippines

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Bulacan, Philippines, where the tropical climate brings not only warm weather but also heightened sun exposure risks. Awareness of UV levels is vital for preventing sunburn and promoting long-term skin health; a high UV Index signifies a greater potential for harmful effects from sunlight. With peak UV readings surging to 15 around midday, Bulacan’s sunny days can pose significant challenges for outdoor activities. Keeping informed about the UV Index can help you protect yourself and your loved ones from overexposure while enjoying the beautiful outdoors.

Hourly UV Index in Bulacan

The UV Index chart throughout the day reveals a striking rise and fall in ultraviolet radiation levels. At 7:00 AM, the index starts at a tame 2, but by 9:00 AM, it escalates to a robust 9, peaking at a dramatic 15 by 11:00 AM—the sun is at its fiercest! As the afternoon unfolds, the index gradually decreases, gliding down to 8 at 2:00 PM before dropping to a gentle 4 by 3:00 PM. By 5:00 PM, it plunges to a mere 1, and as evening approaches, the UV levels settle at 0 by 6:00 PM. This data underlines the importance of sun protection during 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	5	moderate	30 min
09:00	9	very high	15 min
10:00	12	extreme	10 min
11:00	15	extreme	10 min
12:00	14	extreme	10 min
13:00	12	extreme	10 min
14:00	8	very high	15 min
15:00	4	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 Bulacan

The UV Index exhibits extreme levels throughout the year, peaking notably in the months of February (15) and March (16), which represent the highest risk periods for sunburn, with a burn time as short as 10 minutes. April and May maintain similarly high indices of 16 and 15, respectively, continuing the trend of significant UV exposure. From June to August, while the index decreases slightly, it remains at dangerous levels, particularly in August (15). The risk gradually tapers off in the following months, but even in November (13) and December (12), caution is still warranted. Visitors and residents are strongly advised to wear sunscreen, seek shade, and avoid prolonged exposure during peak sun hours, particularly in the high-risk months of February through May. Staying informed and taking precautions can help minimize the risk of UV-related health issues.

Monthly Maximum UV Index for Bulacan, Philippines

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

The table above highlights how UV exposure in Bulacan 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.

Bulacan'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
Davao UVI	13	15	16	15	15	13	14	14	15	14	13	11
Bulacan	14	15	16	16	15	13	13	15	15	14	13	12