UV Index in Merida, Mexico

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Merida, Mexico, where the sun's rays can be intense, particularly during the midday hours. Awareness of UV levels can help prevent sunburn and protect skin health, especially in this warm climate characterized by a tropical savanna (Aw) climate zone. With UV Index values peaking at 12 during midday, the risk of harmful exposure increases significantly, making it essential to take precautions. By staying informed about the UV Index in Merida, you can enjoy the sun safely while safeguarding your skin from potential damage.

Hourly UV Index in Merida

Starting from the early hours of the day, the UV Index begins at a low 1 at 07:00, gradually climbing to 3 by 09:00. As the morning progresses, the intensity ramps up significantly, peaking at an impressive 14 around 13:00. The sun’s strength remains formidable, with a 12 at 12:00 and 10 at 11:00. After this midday apex, the UV levels start to decline—dropping to 11 by 15:00 and tapering to 4 at 17:00. As evening approaches, the index returns to a safe 1 by 19:00, signaling a gentle end to the day's solar exposure. It's essential to take precautions during the peak hours, especially between 10:00 and 14:00, when UV radiation is at its most intense.

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	1	low	45 min
09:00	3	moderate	30 min
10:00	6	high	25 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	14	extreme	10 min
14:00	13	extreme	10 min
15:00	11	extreme	10 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Merida

Throughout the year, significant seasonal changes in the UV Index are observed, with high-risk months spanning from February to September when the index reaches extreme levels, peaking at 14. During these months, the recommended burn time is notably short, at just 10 minutes, emphasizing the need for protective measures. Even in the winter months, the UV Index remains a concern, particularly in January and February with values of 10 and 12, respectively, where exposure is categorized as very high and extreme. For residents and visitors, it is crucial to stay vigilant and adopt protective strategies, such as wearing sunscreen, hats, and sunglasses, especially during the high UV season, to mitigate the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Merida, Mexico

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

The table above highlights how UV exposure in Merida 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.

Merida'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
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
Merida	10	12	14	14	14	14	14	13	14	13	10	9
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9