UV Index in Challas, Peru

Last updated: June 2, 2025

Understanding the UV Index in Challas, Peru, is crucial for ensuring skin health and preventing sunburn, especially in a region known for its unique Cfb climate. As the sun climbs, UV levels can reach their peak, with indices soaring to 13 between noon and early afternoon. This elevated exposure underscores the importance of awareness—knowledge of UV levels can empower residents and visitors to take necessary precautions, safeguarding against harmful effects of intense sun exposure. With typical risks peaking during midday, vigilance is key to enjoying the beautiful outdoors while protecting your skin.

Hourly UV Index in Challas

The UV Index throughout the day shows a distinct peak in intensity, highlighting the need for sun protection during the midday hours. Starting from a mild gauge of 1 at 7 AM, the index gradually climbs, hitting 5 by 9 AM. The real surge begins at 10 AM, when it skyrockets to 9, peaking at an intense 13 at noon—the most critical time for safeguarding skin. As the afternoon unfolds, the index gradually descends, maintaining a moderate 6 by 3 PM before tapering off to 1 by 5 PM, and finally settling at 0 after 6 PM. The fluctuating values underscore the importance of staying vigilant against UV exposure, especially during those hours when the sun is at its highest.

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	13	extreme	10 min
13:00	12	extreme	10 min
14:00	9	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 Challas

Throughout the year, UV index values consistently remain in the extreme range, peaking from January to April with levels reaching 19 and a burn time of only 10 minutes. The high-risk months for UV exposure are between January and April as well as in September, where the UV Index remains at high levels (up to 18). Despite a slight decrease in June and July, the UV risk remains significant with values around 13 to 14, followed by another uptick in September to November. Visitors and residents are advised to take precautions year-round: wear protective clothing, apply broad-spectrum sunscreen, and limit sun exposure during peak hours to safeguard against harmful UV rays.

Monthly Maximum UV Index for Challas, Peru

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

The table above highlights how UV exposure in Challas 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.

Challas'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
Challas	18	19	19	18	15	13	14	14	17	18	17	17