UV Index in San Alejandro, Peru

Last updated: July 2, 2025

In San Alejandro, Peru, understanding the UV Index is crucial for protecting your skin and overall health. With the region's Af climate, characterized by its warm and humid conditions, residents and visitors alike need to be aware of varying UV levels throughout the day to prevent sunburn and long-term skin damage. The UV Index in San Alejandro can peak at a critical level of 11 around noon, highlighting significant exposure risks during those hours. Staying informed about the UV Index not only helps you enjoy the outdoors safely but also reinforces the importance of sun protection in this sun-soaked paradise.

Hourly UV Index in San Alejandro

As the day unfolds, the UV Index reaches its peak between 11:00 AM and 12:00 PM, soaring to a striking 11. The morning starts gently, with the index at a modest 1 by 7:00 AM, slowly climbing to 4 by 9:00 AM. The sun then intensifies, pushing the index to a strong 10 at 11:00 AM, signaling it's time to seek shade and protect your skin. By 2:00 PM, it begins to wane, dropping to 8, and further decreases to 5 by 3:00 PM. As the afternoon progresses, the index continues to fall, reaching 2 at 4:00 PM, and finally settling at 1 by 5:00 PM and 0 as the sun sets at 6:00 PM. Stay aware and shield yourself during those crucial midday 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	11	extreme	10 min
13:00	10	very high	15 min
14:00	8	very high	15 min
15:00	5	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in San Alejandro

Throughout the year, the UV Index remains consistently extreme, with the highest readings occurring from January to April, where values peak at 16. May through July sees a slight decrease, with the UV Index ranging from 11 to 12, but exposure remains dangerous, with a burn time of just 10 minutes year-round. As we transition into August and September, the index varies between 12 and 14, maintaining high risk levels before dropping slightly in October and December. November sees a return to 15, further emphasizing the need for vigilance. Visitors and residents should take precautionary measures year-round, including wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sunlight hours to minimize the risk of skin damage.

Monthly Maximum UV Index for San Alejandro, Peru

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

The table above highlights how UV exposure in San Alejandro compares to other major locations across Peru. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Alejandro's solar exposure compared to other cities in Peru. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Callao UVI	14	14	14	12	10	9	10	11	12	13	14	13
Lima UVI	14	14	14	12	10	9	10	11	12	13	14	13
Trujillo UVI	15	15	15	14	12	11	11	11	13	14	14	14
Chiclayo UVI	14	15	15	14	13	11	11	12	15	14	14	13
San Alejandro	15	16	16	16	12	11	11	12	14	14	15	14
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17