UV Index in Santo Tomas, Philippines

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of Santo Tomas, Philippines. This measure helps you stay informed about the sun’s intensity and protect yourself from harmful UV radiation, which can lead to sunburn and increase the risk of skin cancer. Santo Tomas experiences an Af climate, characterized by warm temperatures and high humidity, which can amplify UV exposure, particularly during midday hours when the UV Index peaks. With values often soaring to 13 around noon, being aware of the UV levels is essential for maintaining skin health and enjoying the outdoors safely.

Hourly UV Index in Santo Tomas

The UV Index throughout the day paints a striking picture of sun exposure. Starting at 2 at 7:00 AM, it steadily climbs to a peak of 13 between 11:00 AM and 12:00 PM, indicating a high risk for unprotected skin. As the day progresses, the intensity begins to wane, dropping to 4 by 3:00 PM before fading to 0 by 6:00 PM. The ideal time for outdoor activities with minimal risk is between 9:00 AM and 2:00 PM, when the index hits an impressive 11 and 13. However, caution is advised during the peak hours when the sun is most aggressive. Always remember to protect your skin!

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	13	extreme	10 min
12:00	13	extreme	10 min
13:00	11	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 Santo Tomas

The UV Index exhibits extreme levels throughout most of the year, with particularly high readings from February to September, peaking in March at an index of 16. This signals a period of increased risk for sunburn, where the recommended burn time is a mere 10 minutes. Visitors and residents should exercise caution during these high-risk months, taking protective measures such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours. As the UV Index begins to decrease in December with a drop to 11, caution remains essential, as even lower readings can still result in harmful exposure. Staying informed and protected is vital for safe outdoor activities year-round.

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
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
Santo Tomas	13	15	16	16	15	13	14	14	15	14	13	11