UV Index in Heroica Guaymas, Mexico

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of Heroica Guaymas, Mexico, where sunny days abound in its BWh climate. With UV levels fluctuating throughout the day—peaking at a striking 12 around midday—being aware of these numbers is essential for effective sunburn prevention and maintaining overall skin health. Knowing when UV exposure is at its highest helps you protect yourself against harmful rays that can lead to long-term damage. With afternoons yielding intense UV intensity, it’s important to stay informed and take the necessary precautions to enjoy the beautiful weather safely.

Hourly UV Index in Heroica Guaymas

As the sun rises, the UV Index begins its climb, peaking at 12 around noon for maximum exposure. Starting from a low of 1 at 7:00 AM, it quickly escalates, hitting 3 by 8:00 AM and reaching a notable 5 by 9:00 AM. The intensity peaks at 11 between 11:00 AM and 1:00 PM, making it crucial to take protective measures during this time. Afterward, the index gradually descends, dropping to 10 at 2:00 PM, then steadily falling to 2 by 5:00 PM and returning to 1 by 7:00 PM. This hourly data highlights the importance of being sun-smart, particularly in the late morning and early afternoon when UV radiation is at its 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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Heroica Guaymas

Throughout the year, UV exposure varies significantly, with the highest risk months occurring from April to September, where the UV Index reaches extreme levels of 11-12 and the burn time is as low as 10 minutes. Notably, February and March also present a very high risk, with indices of 8-9 and a burn time of just 15 minutes. As such, it is crucial for both visitors and residents to take precautions during these months, including wearing broad-spectrum sunscreen, protective clothing, and UV-blocking sunglasses. In contrast, January, November, and December present moderate to high exposure levels, making it safer, with longer burn times of 25 to 30 minutes. Regardless of the season, awareness and proactive measures can help minimize UV damage.

Monthly Maximum UV Index for Heroica Guaymas, Mexico

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

The table above highlights how UV exposure in Heroica Guaymas 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.

Heroica Guaymas'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
Heroica Guaymas	5	8	9	11	12	12	12	11	11	9	6	5
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