UV Index in Calca, Peru

Last updated: May 3, 2025

Understanding the UV Index in Calca, Peru, is crucial for safeguarding your skin against harmful ultraviolet radiation. With peak values soaring to 14 during midday hours, awareness of UV levels can significantly aid in sunburn prevention and overall skin health. The diverse climate of Calca, characterized by a Cfb climate zone, presents unique challenges with UV exposure, especially given its high altitudes and intense sunlight. By staying informed about the UV Index, you can enjoy the beautiful outdoor activities Calca has to offer while keeping your skin protected and healthy.

Hourly UV Index in Calca

The UV Index paints a vivid picture of the day's sun exposure, starting gently at 1 by 07:00. As the morning unfolds, it climbs to 3 by 08:00, then escalates rapidly, peaking at 14 around 12:00. This midday surge, marked by 11 at 10:00 and a staggering 13 at 11:00, indicates a high risk of harm from unprotected sun exposure. As the afternoon approaches, the index begins to decrease, dropping to 8 by 14:00 and later to 4 at 15:00. By 16:00, it scales down to 2, and the shadows deepen as the sun sets, with the UV Index finally resting at 0 by 18:00 and 19:00. It’s a reminder to take precautions during the peak hours to protect oneself from excessive UV exposure.

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	3	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	14	extreme	10 min
13:00	12	extreme	10 min
14:00	8	very high	15 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 Calca

Throughout the year, UV Index levels remain consistently high, with extreme exposure categories prevailing from January to December. Notably, November poses the highest risk, registering a UV Index of 23, while February, March, and April maintain a UV Index of 19. The burn time across all months is remarkably brief at just 10 minutes, indicating that prolonged exposure can lead to serious skin damage. Visitors and residents are strongly advised to take precautions, including wearing protective clothing, applying broad-spectrum sunscreen regularly, and seeking shade during peak sunlight hours, particularly during the high-risk months of November and February. Staying vigilant about UV protection year-round is essential to safeguard skin health.

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	11	13	14	16	18	23	18