UV Index in Santiago, Brazil

Last updated: May 3, 2025

In Santiago, Brazil, being aware of the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels is essential not only for sunburn prevention but also for maintaining long-term skin health. With Santiago’s Cfa climate offering warm summers and ample sunshine, residents and visitors must remain vigilant about peak UV exposure, particularly during midday when the index can reach as high as 6. Stay informed, take the necessary precautions, and enjoy the sun safely!

Hourly UV Index in Santiago

The UV Index throughout the day presents a dynamic interplay of sunlight, peaking at 12:00 PM and 1:00 PM with a robust 6. Early risers will enjoy the gentle warmth with a UV Index of 0 at 7:00 AM, slowly climbing to 1 by 8:00 AM. As the morning progresses, it reaches 3 at 10:00 AM and then escalates to its highest at noon. Afternoon hours see a gradual decline, dipping back to 5 at 2:00 PM before gently dropping to 3 by 3:00 PM. As the sun sets, the index retreats below 1 from 5:00 PM onward, concluding with a soothing 0 at 6:00 PM and remaining steady until dusk. Make sure to stay protected during the peak hours, especially when the sun's rays are at their strongest!

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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	3	moderate	30 min
11:00	5	moderate	30 min
12:00	6	high	25 min
13:00	6	high	25 min
14:00	5	moderate	30 min
15:00	3	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 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.

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.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Santiago	15	14	12	9	6	5	5	7	10	13	14	14
Rio de Janeiro UVI	15	14	13	10	7	6	7	9	11	12	13	15
Sao Paulo UVI	16	15	12	11	8	6	7	9	11	13	14	15
Belo Horizonte UVI	17	16	14	12	9	7	8	10	12	13	14	16
Salvador UVI	14	14	14	13	10	9	9	12	12	15	15	14
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13