UV Index in Cozumel, Mexico

Last updated: July 2, 2025

Cozumel, Mexico, is a paradise known for its stunning beaches and vibrant marine life, but it also requires awareness of the UV Index to ensure sun safety. Understanding UV levels is crucial for preventing sunburn, protecting skin health, and reducing the risk of long-term damage. With Cozumel's tropical climate and significant sun exposure, the UV Index can peak at an intense 12 around midday, making it vital to stay informed and take necessary precautions during your visit. By keeping an eye on the UV Index, you can fully enjoy the beautiful outdoors while safeguarding your skin against harmful rays.

Hourly UV Index in Cozumel

As the day unfolds, the UV Index climbs steadily, peaking at an intense 12 between noon and 1 PM. Starting from a mild 1 at 7 AM, the index escalates, hitting 4 by 9 AM, before reaching 10 at 11 AM. At 12 PM, the sun’s rays intensify, prompting caution as the index remains high at 12 until 1 PM. After this peak, it gradually declines, dropping to 9 by 3 PM, and then descending further to 1 by 7 PM. It's a day that reminds us to stay sun-safe during those peak hours, especially when the UV levels are at their highest!

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	12	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Cozumel

The UV Index displays significant seasonal variations, with the highest levels occurring during the summer months from March through October. Notably, the extreme exposure category peaks in June with a UV Index of 14, alongside April, May, July, August, September, and October, when the index ranges from 12 to 13, resulting in a burn time of just 10 minutes. January and February also rank as high-risk months, with indexes of 8 and 10, respectively, highlighting the need for caution during the early year. As visitors and residents, it’s essential to take protective measures against harmful UV exposure, especially between March and October when the risk is at its greatest. Wearing sunscreen, protective clothing, and seeking shade during peak hours can mitigate the risks associated with high UV levels.

Monthly Maximum UV Index for Cozumel, Mexico

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

The table above highlights how UV exposure in Cozumel 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.

Cozumel'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
Cozumel	8	10	12	13	13	14	12	13	12	11	9	7
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