UV Index in San Isidro, Peru

Last updated: August 1, 2025

In San Isidro, Peru, being aware of the UV Index is crucial for safeguarding your skin's health against harmful UV radiation. Understanding UV levels helps prevent sunburns and long-term skin damage, especially during the peak hours when the UV Index can reach as high as 10 around noon. Given San Isidro's BWk climate, where sunny conditions are prevalent, residents and visitors alike should be mindful of their sun exposure and take protective measures. Stay informed about UV levels to enjoy the beautiful outdoors safely!

Hourly UV Index in San Isidro

The hourly UV Index reveals a dynamic range of sun exposure today. Starting off at a gentle 1 at 7:00 AM, the index steadily climbs, peaking at a striking 10 by 12:00 PM—the peak exposure time. As the sun reaches its zenith, caution is advised for outdoor activities during the 11:00 AM to 1:00 PM window when the index remains high at 9 and 10. Following this midday surge, the index gracefully descends; by 3:00 PM, it dips to 4 and continues to decline to 1 by 5:00 PM. Finally, after a brief respite, the UV rays fade to 0 by 6:00 PM, signaling a safe return for evening outdoor plans. Stay sun-smart and enjoy the day wisely!

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
08:002low45 min
09:005moderate30 min
10:008very high15 min
11:0010very high15 min
12:0011extreme10 min
13:0010very high15 min
14:008very high15 min
15:005moderate30 min
16:002low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in San Isidro

Throughout the year, UV Index levels exhibit significant seasonal variations, presenting high-risk months primarily between January and March, as well as August through November, where the index remains in the extreme category (14-12) with a burn time as brief as 10 minutes. Notably, April to July sees a slight decrease, transitioning to a very high level (10-9), allowing for slightly longer exposure times of 15 minutes. With such high UV readings during peak seasons, it is essential for visitors and residents alike to take precautionary measures: apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak sun hours to minimize the risk of skin damage.

Monthly Maximum UV Index for San Isidro, Peru

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Isidro. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec14141412109101112131413
Data source: Statistical UV Index data for San Isidro, 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 San Isidro UV Index with Other Peru Cities

The table above highlights how UV exposure in San Isidro 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.
San Isidro's solar exposure compared to other cities in Peru. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
San Isidro14141412109101112131413
Callao UVI14141412109101112131413
Lima UVI14141412109101112131413
Trujillo UVI151515141211111113141414
Chiclayo UVI141515141311111215141413
Arequipa UVI181717151210111315171817