UV Index in Callao, Peru

Last updated: July 2, 2025

Understanding the UV Index in Callao, Peru is crucial for safeguarding your skin and overall health. As a coastal city characterized by its BWk climate, Callao experiences varying UV levels throughout the day, peaking at 10 around noon. High UV exposure increases the risk of sunburn and long-term skin issues, making it essential to monitor these levels. With maximum readings generally occurring between 10 AM and 2 PM, it's important to take protective measures during these hours to enjoy the sun safely and maintain healthy skin. Stay informed and protect yourself from the sun's harmful rays!

Hourly UV Index in Callao

The hourly UV Index reveals a dynamic range of sun exposure today. Starting off at a gentle 1 at 7:00 AM, the index steadily climbs, peaking at a striking 10 by 12:00 PM—the peak exposure time. As the sun reaches its zenith, caution is advised for outdoor activities during the 11:00 AM to 1:00 PM window when the index remains high at 9 and 10. Following this midday surge, the index gracefully descends; by 3:00 PM, it dips to 4 and continues to decline to 1 by 5:00 PM. Finally, after a brief respite, the UV rays fade to 0 by 6:00 PM, signaling a safe return for evening outdoor plans. Stay sun-smart and enjoy the day wisely!

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	6	high	25 min
11:00	9	very high	15 min
12:00	10	very high	15 min
13:00	9	very high	15 min
14:00	7	high	25 min
15:00	4	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 Callao

Throughout the year, UV Index levels exhibit significant seasonal variations, presenting high-risk months primarily between January and March, as well as August through November, where the index remains in the extreme category (14-12) with a burn time as brief as 10 minutes. Notably, April to July sees a slight decrease, transitioning to a very high level (10-9), allowing for slightly longer exposure times of 15 minutes. With such high UV readings during peak seasons, it is essential for visitors and residents alike to take precautionary measures: apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak sun hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Callao, Peru

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

The table above highlights how UV exposure in Callao 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.

Callao'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	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
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17