UV Index in Ascension, Mexico

Last updated: June 2, 2025

Understanding the UV Index is crucial for the residents and visitors of Ascension, Mexico, where the combination of a semi-arid climate and high sun exposure can increase the risk of harmful UV radiation. During peak hours, particularly between 10 AM and 2 PM, UV levels can soar to a maximum of 13, making it essential for everyone to be aware of these readings to prevent sunburn and promote long-term skin health. By keeping an eye on the UV Index, you can plan your outdoor activities safely and enjoy the beautiful sunny days while protecting yourself from potential skin damage. Stay informed and safeguard your health in the radiant environment of Ascension!

Hourly UV Index in Ascension

Throughout the day, the UV Index experiences a dynamic shift, peaking at an impressive 13 between 1 PM and 2 PM, indicating a high risk of harm from unprotected sun exposure. The morning starts gently, with a UV Index of 1 at 7 AM, gradually rising to 4 by 9 AM. As the sun inches higher, the intensity increases sharply, reaching 10 by 11 AM and soaring to 12 by noon. Post-peak, the index begins to decline, dropping to 10 at 3 PM, before settling back to a mild 2 by 6 PM. This clear progression emphasizes the importance of sun protection during the midday hours when the UV Index is at its highest. Enjoy the sunshine, but remember to stay safe! ☀️

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	13	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 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 Ascension

Throughout the year, UV Index levels display significant seasonal changes, with the highest risks occurring from February to September. The months of April to September feature an extreme exposure category, peaking at UV Index 13 in May and June, where the burn time drops to just 10 minutes. Visitors and residents should be particularly cautious during these months and consider protective measures such as wearing sunscreen, hats, and protective clothing when outdoors. January, December, and November present moderate to high exposure levels, allowing for longer burn times of 25 to 30 minutes, yet sun protection remains advisable. As the UV Index varies dramatically throughout the year, staying informed and prepared is essential for safe outdoor activities.

Monthly Maximum UV Index for Ascension, Mexico

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

The table above highlights how UV exposure in Ascension 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.

Ascension'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
Ascension	5	8	10	12	13	13	12	12	11	9	7	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