UV Index in Santo Tomas, Philippines

Last updated: June 2, 2025

Understanding the UV Index is essential for residents and visitors of Santo Tomas, Philippines, where tropical climate intensifies sun exposure. With UV levels soaring as high as 14 during midday hours, being aware of these rays is critical for preventing sunburn and maintaining skin health. With Santo Tomas experiencing consistently high UV risks, especially in the late morning to early afternoon, knowing when to seek shade or apply sunscreen can make a significant difference in protecting your skin from harmful effects. Stay informed and stay safe under the sun!

Hourly UV Index in Santo Tomas

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 Santo Tomas

During the year, the UV Index experiences significant fluctuations, particularly peaking in the summer months. From January to October, the UV Index remains in the extreme category, with values soaring to 15 in both April and August, indicating high-risk months for sun exposure. Residents and visitors are advised to take extreme precautions, such as limiting sun exposure to 10 minutes during these months, wearing protective clothing, and applying broad-spectrum sunscreen. In contrast, November and December show a slight decrease, with the UV Index dropping to 10 and 9 respectively, transitioning to a very high exposure category, allowing for longer exposure times of 15 minutes but still necessitating caution. Overall, it's crucial for everyone to remain vigilant about sun safety year-round, especially in peak UV months.

Monthly Maximum UV Index for Santo Tomas, Philippines

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

The table above highlights how UV exposure in Santo Tomas 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.

Santo Tomas'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
Santo Tomas	11	12	14	15	14	14	14	15	14	13	10	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