UV Index in San Francisco de Borja, Mexico

Last updated: June 2, 2025

In San Francisco de Borja, Mexico, understanding the UV Index is crucial for protecting your skin and overall health. With high UV levels peaking at 13 during midday, awareness of these readings can help prevent painful sunburns and long-term skin damage. The region’s semi-arid climate (BSk) often leads to increased exposure to ultraviolet radiation, particularly during the summer months. By staying informed about UV levels, residents and visitors alike can enjoy the beautiful outdoors while safeguarding their skin from harmful effects.

Hourly UV Index in San Francisco de Borja

As the day unfolds, the UV Index ramps up significantly, peaking during the midday hours. At 07:00, it starts at a gentle 1, barely warranting concern. By 09:00, it rises to 4, signaling a gradual increase in sun intensity. However, it’s at 11:00 that the UV Index surges to a powerful 10, reaching 13 by 12:00 and 13:00, urging everyone to seek shade and slather on sunscreen. The intensity tapers off into the afternoon, dropping to 12 at 14:00, before gradually fading to 10 by 15:00, and then continuing its descent to 4 at 17:00. As the sun sets, the UV Index recedes to a safe 2 at 18:00 and finally retreats back to 1 by 19:00. It's a brilliant reminder of how vital it is to stay sun-safe during those 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	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	13	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 San Francisco de Borja

The UV Index shows significant seasonal changes, peaking during the spring and summer months. From January (UV Index 7) to March (UV Index 11), there is a gradual increase in UV intensity, reaching an extreme level of 14 in both April and May. The high-risk months for UV exposure are February through September, where the UV Index consistently remains at 9 or above, necessitating protective measures. Visitors and residents are advised to limit sun exposure, particularly during peak hours, and to utilize sun protection strategies, such as wearing sunscreen, hats, and protective clothing, especially when burn times drop to as low as 10 minutes during the most intense months. As the year progresses, UV levels decrease, with a notable drop to UV Index 6 in December, providing a more manageable risk through the winter months.

Monthly Maximum UV Index for San Francisco de Borja, Mexico

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

The table above highlights how UV exposure in San Francisco de Borja 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 Francisco de Borja'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
San Francisco de Borja	7	9	11	14	14	13	13	13	13	10	8	6
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