UV Index in Cusco, Peru

Last updated: May 3, 2025

Understanding the UV Index is crucial in Cusco, Peru, where residents and visitors alike can be exposed to high levels of solar radiation, particularly during the midday hours. With a significant UV Index that often peaks at 13 around noon, awareness of these levels is vital for preventing sunburn and protecting long-term skin health. Due to Cusco's elevated climate and geographic location, individuals are at an increased risk for UV damage, making it essential to monitor daily UV levels and take appropriate precautions. Stay informed, safeguard your skin, and enjoy the beautiful, sunny days that Cusco has to offer!

Hourly UV Index in Cusco

As the sun rises higher, the UV Index showcases its dramatic dance throughout the day. Starting at a mild 1 at 07:00, the index climbs swiftly, hitting 3 by 08:00, then skyrocketing to a sizzling 10 at 10:00. The peak occurs at 11:00 and 12:00, both boasting a striking 13, making midday the most crucial time for sun safety. A gradual decline follows, with the index dropping to 4 by 15:00 and further dwindling to 1 by 17:00. As the day winds down, and night approaches, the UV levels settle to 0, reminding us that the sun's intensity can vary greatly. Stay sun-smart during those peak hours to enjoy the outdoors safely!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:003moderate30 min
09:007high25 min
10:0010very high15 min
11:0013extreme10 min
12:0013extreme10 min
13:0011extreme10 min
14:008very high15 min
15:004moderate30 min
16:002low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Cusco

Throughout the year, UV Index values remain consistently high, with extreme exposure categories recorded from January through December. The months of December (UV Index 22), January (UV Index 19), February (UV Index 19), November (UV Index 19), and March (UV Index 18) are notably high-risk, where even short sun exposure can cause burns in just 10 minutes. Visitors and residents should take precautions year-round, including wearing sunscreen with high SPF, donning protective clothing, and seeking shade during peak sun hours to mitigate the risks associated with prolonged UV exposure. Prioritizing skin protection is crucial, especially during these high-risk months.

Monthly Maximum UV Index for Cusco, Peru

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Cusco. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec191918171311131416181922
Data source: Statistical UV Index data for Cusco, 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 Cusco UV Index with Other Peru Cities

The table above highlights how UV exposure in Cusco 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.
Cusco's solar exposure compared to other cities in Peru. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Callao UVI14141412109101112131413
Lima UVI14141412109101112131413
Trujillo UVI151515141211111113141414
Chiclayo UVI141515141311111215141413
Arequipa UVI181717151210111315171817
Cusco191918171411131416181922