UV Index in Calamba, Philippines

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Calamba, Philippines, where the year-round tropical climate can lead to significant sun exposure. With peak UV levels reaching a staggering 14 around midday, awareness of these levels is essential for sunburn prevention and maintaining skin health. Being informed about the fluctuating UV Index throughout the day empowers locals to protect themselves from harmful rays, reducing the risk of skin damage and long-term health issues. As Calamba basks in its vibrant, sun-soaked days, staying vigilant about UV risks is more important than ever.

Hourly UV Index in Calamba

At 07:00, the UV Index starts at a modest 2, but as the sun rises higher, it escalates rapidly. By 08:00, the index doubles to 4, signaling a gradual increase in UV exposure. The peak arrives between 10:00 and 12:00, where it hits an impressive 14, indicating a high risk of harm from unprotected sun exposure. Temperatures soar as the index dips slightly to 12 by 13:00 and further declines to 9 by 14:00. As the afternoon progresses, the UV levels plummet, dropping to 5 at 15:00 and falling to 2 by 16:00. The sun's strength fades further with readings of 1 at 17:00 and finally reaching 0 after 18:00. It's a stark reminder of the sun's intensity, urging everyone to prioritize sun safety 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	8	very high	15 min
10:00	12	extreme	10 min
11:00	14	extreme	10 min
12:00	14	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 Calamba

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 Calamba, Philippines

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

The table above highlights how UV exposure in Calamba 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.

Calamba'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
Calamba	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