UV Index in Santo Anastacio, Brazil

Last updated: May 3, 2025

In Santo Anastácio, Brazil, being aware of the UV Index is crucial for maintaining your skin’s health and preventing sunburn. With the region’s Aw climate, residents and visitors alike experience significant UV exposure, especially during peak hours when levels can soar to 8 on the UV Index scale. Understanding these levels empowers you to take proactive measures against harmful UV radiation, ensuring safer outdoor activities and healthier skin. By staying informed about the UV Index, you can enjoy the sunny days in Santo Anastácio while protecting yourself from the potential risks of overexposure.

Hourly UV Index in Santo Anastacio

At dawn, the UV Index remains low, peaking at 1 by 08:00. As the sun rises higher, a notable increase occurs, reaching 3 at 09:00 and escalating dramatically to a maximum of 8 from 12:00 to 13:00. This midday surge indicates a higher risk for sun exposure, making it essential to take precautions such as wearing sunscreen and protective clothing. The intensity then gradually declines, dropping to 4 by 15:00, and continuing its descent to 0 by 19:00, marking the end of the sun’s peak influence for the day. Stay mindful of these hourly fluctuations to enjoy the sun 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.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	1	low	45 min
09:00	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	8	very high	15 min
13:00	8	very high	15 min
14:00	6	high	25 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 Santo Anastacio

Throughout the year, the UV Index demonstrates significant seasonal variation, with the highest levels occurring during the winter and late fall months. From January to April, the UV Index remains in the extreme exposure category (15 to 11), with a rapid burn time of just 10 minutes. This extreme risk continues into September and October, matching the highest readings, while November also presents a notable UV Index of 14. The high-risk months are primarily January through April, and again in September through November. As the months progress to May through August, the levels decrease slightly, categorized as very high to high, allowing slightly longer burn times of 15 to 25 minutes. It is advisable for both visitors and residents to exercise extreme caution during peak UV times, particularly in the first half of the year, using appropriate sun protection measures such as sunscreen, hats, and protective clothing.

Monthly Maximum UV Index for Santo Anastacio, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Santo Anastacio. 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 Santo Anastacio, 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 Santo Anastacio UV Index with Other Brazil Cities

The table above highlights how UV exposure in Santo Anastacio 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.

Santo Anastacio'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
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
Santo Anastacio	15	15	13	11	8	7	8	10	11	14	14	16
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