UV Index in Calca, Peru

Last updated: June 2, 2025

In the stunning region of Calca, Peru, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With its high-altitude climate and clear skies, Calca often sees elevated UV levels, particularly between 10 AM and 2 PM, when the index peaks at 12. Awareness of these UV levels helps residents and visitors alike protect themselves against the harmful effects of sun exposure, ensuring safe outdoor enjoyment while safeguarding against skin damage. Whether you're exploring the breathtaking landscapes or simply soaking up the sun, staying informed about the UV Index is essential for smart sun safety in Calca.

Hourly UV Index in Calca

As the day unfolds, the UV Index begins to rise steadily, peaking at 12 around noon, indicating a high risk of harm from unprotected sun exposure. Starting from a mild 1 at 07:00, it climbs to 2 by 08:00, then surges to a significant 9 by 10:00. The intensity continues to escalate, reaching its maximum at 11 by 11:00, just before noon. After a slight dip to 8 by 14:00, the UV Index begins its gradual decline, dropping to 2 by 16:00, and finally resting at 0 by 18:00—a clear indication that the sun's rays are no longer a concern. To protect your skin, it's crucial to seek shade and apply sunscreen 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	5	moderate	30 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 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 Calca

The UV Index exhibits remarkably high levels throughout the entire year, consistently falling within the extreme exposure category. From January to April, the UV Index remains at 19, posing the highest risk for skin damage with a rapid burn time of just 10 minutes. May sees a slight decrease to 14, while June to August fluctuates between 12 and 14. However, September marks a resurgence with a UV Index of 16, and October and November follow closely behind at 18. December slightly drops to 17. Given these persistently high UV levels, it is crucial for both visitors and residents to take strict precautions during all months, including wearing protective clothing, applying broad-spectrum sunscreen, and limiting direct sun exposure, especially during peak hours.

Monthly Maximum UV Index for Calca, Peru

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

The table above highlights how UV exposure in Calca 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.

Calca'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
Calca	19	19	19	17	14	12	13	14	16	18	18	17