UV Index in Santiago, Brazil

Last updated: August 1, 2025

In Santiago, Brazil, staying aware of the UV Index is crucial for safeguarding your skin against harmful sun exposure. Understanding the UV levels can help you effectively prevent sunburn and promote overall skin health, especially in a climate characterized by sunny and humid subtropical conditions (Cfa). With peak UV Index values reaching 5 around midday, it’s essential to take precautions on sunny days to minimize your risk of skin damage. So, whether you’re enjoying outdoor activities or simply relaxing in the sun, being informed about UV exposure can make all the difference in preserving your skin’s wellbeing.

Hourly UV Index in Santiago

The UV Index for today paints a story of a steadily rising sun, reaching its peak in the early afternoon. Starting at 0 at 7 AM, the index climbs cautiously to 1 by 8 AM and remains at this level until 10 AM. As the day progresses, the UV intensity spikes to 4 by 11 AM and reaches its maximum of 5 at both 12 PM and 1 PM, urging sunseekers to apply that sunscreen! The afternoon sees a gradual decline, with the UV Index dipping back to 4 at 2 PM, then 3 at 3 PM, falling further to 2 by 4 PM. As evening approaches, the UV levels drop to 1 by 5 PM, finally settling back to 0 as the sun sets. Stay sun-safe 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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:002low45 min
10:004moderate30 min
11:006high25 min
12:007high25 min
13:007high25 min
14:006high25 min
15:004moderate30 min
16:002low45 min
17:001low45 min
18:001low45 min
19:000low45 min

Monthly UV Index Trends in Santiago

The UV Index experiences significant seasonal fluctuations, with extreme levels recorded from January to March and again in October to December. These high-risk months indicate a UV Index of 14-15, where the burn time is as little as 10 minutes. In April, the index drops to 9, categorized as very high, allowing for a bit more sun exposure at 15 minutes before risking sunburn. As we move into late spring and summer, the UV levels decrease slightly, with May seeing a high index of 6 and a burn time of 25 minutes. June and July present moderate levels of UV exposure, while August climbs back to a high of 7. Notably, September spikes again to 10, emphasizing the need for vigilance. To ensure safety, visitors and residents should take extra precautions during these high-risk months by utilizing sunscreen, wearing protective clothing, and seeking shade to reduce sun exposure.

Monthly Maximum UV Index for Santiago, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Santiago. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec1513129655710131414
Data source: Statistical UV Index data for Santiago, 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 Santiago UV Index with Other Brazil Cities

The table above highlights how UV exposure in Santiago compares to other major locations across Brazil. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Santiago's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Santiago1514129655710131414
Rio de Janeiro UVI15141310767911121315
Sao Paulo UVI16151211867911131415
Belo Horizonte UVI171614129781012131416
Salvador UVI1414141310991212151514
Fortaleza UVI141415151311111213131313