UV Index in Comunas, Puerto Rico

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in Comunas, Puerto Rico, where the tropical climate leads to heightened sun exposure. Knowing the UV levels throughout the day helps to protect against sunburn and contributes significantly to long-term skin health. With peak indices reaching as high as 13 around midday, it's vital to be mindful of when to seek shade or apply sunscreen. As you enjoy the beautiful Puerto Rican sun, staying informed about UV risks can make all the difference in enhancing your outdoor experience while safeguarding your skin.

Hourly UV Index in Comunas

As the sun climbs higher, the UV Index reaches its peak intensity around 12:00 PM, soaring to a striking 13—a clear signal for outdoor enthusiasts to take precautions. The morning hours start gently, with a low of 1 at 07:00 AM, gradually escalating to 6 by 09:00 AM and hitting 9 at 10:00 AM. By 11:00 AM, the sun begins to assert itself with a 12. However, as the afternoon progresses, the UV intensity starts to wane, dropping to 10 at 2:00 PM, and tapering off to a mere 2 by 5:00 PM. As daylight diminishes, the UV Index dwindles to 0 by 7:00 PM, inviting a much-needed respite from the sun’s relentless rays. Always be vigilant and protect your skin 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	1	low	45 min
08:00	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Comunas

Throughout the year, UV Index levels exhibit significant seasonal variations, with peak exposure occurring from March to September. The highest UV Index is recorded in September at 14, indicating an extreme exposure category with a burn time of only 10 minutes. To protect against harmful UV radiation, residents and visitors should be particularly cautious during the high-risk months of February through October, when the UV Index consistently reaches extreme levels of 11 or higher. It is advisable to use effective sun protection measures, such as sunscreen, hats, and protective clothing, especially during midday hours when the risk of sunburn is greatest. As UV levels decrease in November and December, the risk remains very high, with burn times of 15 minutes, so sun safety should still be a priority during the winter months.

Monthly Maximum UV Index for Comunas, Puerto Rico

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

The table above highlights how UV exposure in Comunas compares to other major locations across Puerto Rico. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Comunas's solar exposure compared to other cities in Puerto Rico. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Caguas UVI	9	11	13	13	14	13	12	13	13	12	9	8
Carolina UVI	9	11	13	13	14	13	12	13	13	12	9	8
San Juan UVI	9	11	13	13	14	13	12	13	13	12	9	8
Comunas	9	11	13	13	13	13	12	13	14	12	9	9
Bayamon UVI	9	11	13	13	14	13	13	13	13	12	9	8
Ponce UVI	9	11	13	14	14	13	13	13	14	12	10	9