UV Index in Carolina, Puerto Rico

Last updated: June 2, 2025

In Carolina, Puerto Rico, understanding the UV Index is essential for protecting your skin and overall health. This tropical haven experiences high UV levels, particularly during midday hours, which can lead to sunburn and long-term skin damage if not properly managed. From sunburn prevention to safeguarding against skin cancer, knowing when UV exposure is at its peak—like the alarming index of 13 at noon—empowers residents and visitors alike to enjoy the sun safely. Given Carolina's warm climate and frequent sunshine, staying informed about the UV Index can help you make smarter choices about outdoor activities and sun protection.

Hourly UV Index in Carolina

The UV Index begins at a mild level of 1 at 07:00, but as the sun climbs higher, it swiftly escalates. By 10:00, it peaks at a critical 9, reaching a maximum of 13 at 12:00, indicating that protective measures are essential. After noon, the index gradually declines, tapering to 7 by 15:00, before dipping to a 2 by 17:00, and finally settling at 0 by 19:00 as the sun sets. This data highlights the importance of sun safety during the hours when UV exposure is at its highest, particularly around midday.

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:003moderate30 min
09:005moderate30 min
10:009very high15 min
11:0011extreme10 min
12:0013extreme10 min
13:0012extreme10 min
14:0010very high15 min
15:007high25 min
16:004moderate30 min
17:002low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in Carolina

The UV Index shows significant seasonal variation, peaking during the months of March to October, when levels reach between 12 and 14, categorizing them as extreme with a burn time of just 10 minutes. The highest risk months are April, May, and August, where the UV Index reaches 13 to 14. In contrast, January, February, and November still present very high exposure risks with less urgency, allowing for burn times of 15 minutes. Visitors and residents are strongly advised to take protective measures during the high UV months by wearing sunscreen, protective clothing, and sunglasses, and to limit sun exposure, especially during midday hours when the sun's rays are strongest.

Monthly Maximum UV Index for Carolina, Puerto Rico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Carolina. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec911131314131213131298
Data source: Statistical UV Index data for Carolina, 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 Carolina UV Index with Other Puerto Rico Cities

The table above highlights how UV exposure in Carolina 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.
Carolina's solar exposure compared to other cities in Puerto Rico. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Carolina911131314131213131298
Caguas UVI911131314131213131298
San Juan UVI911131314131213131298
Bayamon UVI911131314131313131298
Ponce UVI9111314141313131412109