UV Index in San Juan Mazatlan, Mexico

Last updated: May 3, 2025

In San Juan Mazatlán, Mexico, being aware of the UV Index is crucial for protecting your skin from harmful sun exposure. Understanding UV levels can help prevent sunburns and promote long-term skin health, ensuring you enjoy all the beautiful outdoor activities this vibrant coastal city has to offer. With a climate that boasts abundant sunshine, the UV Index in San Juan Mazatlán can reach dangerously high levels, particularly during midday hours when readings soar above 10. Stay informed and proactive to make the most of your time under the sun safely!

Hourly UV Index in San Juan Mazatlan

The UV Index fluctuates dramatically throughout the day, beginning at a low 1 at 07:00 and 08:00. As the sun climbs higher, the intensity increases, peaking at an impressive 14 by 13:00. This period, from 10:00 to 12:00, is particularly intense, with values soaring to 12 and 10 respectively. However, the afternoon sees a gradual decline, dropping to 11 at 15:00 and tapering off to a more manageable 4 by 17:00. By evening, the UV Index dwindles back to a safe 1 at 19:00, reminding us of the day's solar journey and the importance of sun safety during 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	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	8	very high	15 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in San Juan Mazatlan

Throughout the year, UV index levels fluctuate significantly, peaking during the late spring and summer months. From February to October, the UV index consistently remains in the extreme category, with the highest readings in April, May, June, and July, all reaching a UV index of 14 and a burn time of just 10 minutes. As such, March through October is deemed the high-risk period for skin damage and sunburn. Visitors and residents are strongly advised to take precautions, including wearing protective clothing, applying broad-spectrum sunscreen frequently, and seeking shade—especially during midday hours—to reduce the risk of harmful UV exposure. In contrast, November and December see a decrease in UV levels, transitioning to a very high category, but it’s still important to stay vigilant as burn times extend to 15 minutes.

Monthly Maximum UV Index for San Juan Mazatlan, Mexico

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

The table above highlights how UV exposure in San Juan Mazatlan 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.

San Juan Mazatlan'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
San Juan Mazatlan	9	12	13	14	14	14	14	13	13	12	10	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