UV Index in Puerto Rico, Mexico

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in Puerto Rico and Mexico, where the sun shines brightly and exposure to ultraviolet (UV) radiation can significantly impact skin health. With peak UV levels often reaching a staggering 13 around midday, awareness of these levels is essential for preventing sunburn and long-term skin damage. Puerto Rico's tropical climate presents unique challenges, as the combination of intense sunlight and humidity increases the risk of harmful UV exposure. By monitoring the UV Index, you can enjoy the beautiful outdoors while protecting yourself from the sun's harmful effects.

Hourly UV Index in Puerto Rico

The UV Index shows a striking rise in intensity as the day progresses, reaching its peak of 13 at 1 PM, making it a crucial time to take protective measures against sun exposure. Starting from a mild 1 at 7 AM, the index steadily climbs, surpassing 10 by 11 AM, signalling that sun safety should be a priority. As we move into the afternoon, it hits a staggering 12 at noon, before gently tapering off in the later hours. By 5 PM, the index drops to 3, finally settling back at 1 by 7 PM. Be sure to stay 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	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Puerto Rico

Throughout the year, UV exposure fluctuates significantly, with high-risk months identified from February to September, when the UV Index reaches extreme levels of 11 to 13, allowing for a burn time of just 10 minutes. Notably, March through August consistently maintain this high-risk designation, necessitating extra caution for visitors and residents alike. During the remaining months—January, November, and December—the UV Index ranges from 8 to 9, categorized as very high, with a burn time of 15 minutes, indicating the need for ongoing sun protection, though the risk diminishes slightly. It is crucial for everyone to prioritize skin safety by utilizing sunscreen, wearing protective clothing, and seeking shade during peak UV hours, particularly in the spring and summer months.

Monthly Maximum UV Index for Puerto Rico, Mexico

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

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

Puerto Rico's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Puerto Rico	9	11	13	13	13	13	13	13	12	11	9	8
Guadalajara UVI	9	11	14	14	14	13	13	13	13	12	9	8
Iztapalapa UVI	10	12	14	15	14	14	14	14	14	12	10	8
Ecatepec de Morelos UVI	10	12	14	15	15	14	14	13	14	12	10	8
Mexico City UVI	10	12	14	15	15	14	14	13	14	12	10	8
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9