UV Index in Castrovirreyna, Peru

Last updated: July 2, 2025

In Castrovirreyna, Peru, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. The high-altitude climate in this region, classified as ET, presents unique UV exposure risks, particularly during peak hours when the index can soar to a staggering 14. Understanding these UV levels helps residents and visitors alike take necessary precautions to protect themselves from harmful rays. With early morning values starting at a modest 1 and escalating throughout the day, it’s vital to stay informed and shield your skin accordingly to enjoy the stunning landscapes without the consequences of overexposure.

Hourly UV Index in Castrovirreyna

As the sun rises, the UV Index gradually climbs, starting at a mild 1 at 7:00 AM. By 9:00 AM, it reaches a moderate 5, but the real intensity kicks in at 10:00 AM with a peak of 9. The index soars to its highest point of 14 at 12:00 PM, signaling a need for sun protection. It remains high at 13 until 1:00 PM, then begins a slow descent, dropping to 10 by 2:00 PM and gradually decreasing to 6 by 3:00 PM. As the afternoon fades, the UV Index plummets to 2 at 4:00 PM and finally settles at 0 for the evening, emphasizing the importance of midday vigilance for sun safety.

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	5	moderate	30 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	14	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	6	high	25 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 Castrovirreyna

Throughout the year, the UV Index remains consistently high, with extreme levels recorded from January to December. The highest UV values occur in the early months, with January and February peaking at an index of 22, indicating a critical risk of harm from unprotected sun exposure, where a burn can occur in just 10 minutes. Visitors and residents should be particularly mindful during these months, as well as in March and April, when the index remains above 18. Although the index slightly decreases during the summer months, it remains above 13, necessitating continued sun protection. As such, it is advised to use sunscreen, wear protective clothing, and seek shade during peak hours throughout the year to minimize the risk of skin damage.

Monthly Maximum UV Index for Castrovirreyna, Peru

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

The table above highlights how UV exposure in Castrovirreyna 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.

Castrovirreyna'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
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17
Castrovirreyna	22	22	20	18	15	13	14	15	17	19	20	21