UV Index in Cozumel, Mexico

Last updated: June 2, 2025

In Cozumel, Mexico, understanding the UV Index is crucial for protecting your skin from the sun's harmful rays. With the island's warm, tropical climate, UV levels can soar, peaking with an index of up to 14 during midday hours. This makes awareness of UV levels essential not just for preventing painful sunburns, but also for long-term skin health. By keeping an eye on the UV Index, you can enjoy the stunning beaches and vibrant outdoor activities Cozumel has to offer while minimizing the risks associated with excessive sun exposure. Stay informed, stay safe, and make the most of this beautiful destination!

Hourly UV Index in Cozumel

The UV Index today showcases a dynamic journey through the hours, beginning with a gentle rise at 07:00 with a safe level of 1. As the sun climbs higher, a noticeable increase brings the index to 4 by 09:00, before peaking at an intense 14 around 13:00. This midday high of 13 is particularly important, signaling a period of significant UV radiation where protective measures are advisable. As the afternoon progresses, the index starts to dip, dropping to 6 by 16:00 and stabilizing at a comfortable 1 by 18:00. This hourly pattern highlights the importance of staying sun-safe during the intensity of the midday sun, while enjoying lower UV levels later in the day.

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	8	very high	15 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	14	extreme	10 min
14:00	12	extreme	10 min
15:00	9	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 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