UV Index in San Sebastian, Philippines

Last updated: July 2, 2025

Understanding the UV Index in San Sebastian, Philippines is crucial for safeguarding your skin and overall health. With the region's tropical climate, UV levels can soar, especially between 10 AM and 2 PM, making it essential to recognize when the risk of sunburn is highest. For instance, with peak UV Index readings reaching 13 around noon, even brief sun exposure can lead to skin damage. By staying informed about UV levels, residents and visitors can take proactive measures to protect themselves, ensuring a safe and enjoyable experience under the sun.

Hourly UV Index in San Sebastian

At dawn, the UV Index begins its climb, starting at a gentle 2 at 07:00. By 08:00, it rises to 4, signaling the start of a sunny day. However, the sun's intensity becomes more pronounced as the clock strikes 09:00, with the index hitting 8. The peak occurs between 10:00 and 12:00, where it surges to a blistering 13, urging sun-seekers to take precautions. As the afternoon progresses, the index gradually lowers to 9 at 14:00, and further descends to 5 by 15:00. By 16:00, it drops significantly to 2, and rolls down to 1 by 17:00. Finally, as twilight approaches, the UV Index hits 0 at 18:00, concluding a day that swung from mild to intense sun exposure—illustrating 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	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	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 San Sebastian

Throughout the year, UV Index values in this area remain consistently high, indicating an extreme exposure category that necessitates caution. January through April display the most intense UV levels, peaking at 16 in both March and April, which along with February, marks the highest-risk months. However, even during the summer months from May to July, the UV Index maintains dangerously elevated levels around 14-16, requiring vigilant sun protection. Returning to the fall and winter months, while values slightly decline to 12 in November and 11 in December, the risk remains significant. Therefore, it is crucial for visitors and residents alike to prioritize sun safety by using adequate sunscreen, wearing protective clothing, and seeking shade, particularly during midday hours when the sun’s intensity is at its peak, regardless of the month.

Monthly Maximum UV Index for San Sebastian, Philippines

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

The table above highlights how UV exposure in San Sebastian 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.

San Sebastian'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
San Sebastian	12	13	16	16	14	14	13	14	14	14	12	11
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