UV Index in Santarem, Brazil

Last updated: May 3, 2025

Awareness of the UV Index is crucial for residents and visitors in Santarem, Brazil, where the tropical climate brings intense sun exposure year-round. Understanding UV levels is essential not just for sunburn prevention but also for maintaining long-term skin health. The UV Index peaks sharply in the late morning and early afternoon, reaching dangerously high levels of 11 to 13, indicating a significant risk of harm from unprotected sun exposure. Given Santarem's climate, which is classified as tropical, it’s vital to stay informed about UV risks to enjoy the outdoors safely while protecting your skin.

Hourly UV Index in Santarem

As the day unfolds, the UV Index climbs steadily, starting at a moderate 1 at 07:00 and peaking at a scorching 13 from 12:00 to 13:00. This spike signifies a heightened risk of harm from unprotected sun exposure, particularly around 11:00, when the index hits 11—a strong warning to seek shade and wear sunscreen. A gradual decline begins at 14:00, dipping to 8 by 15:00, before sliding back to a safe 2 by 17:00 and ultimately falling to 0 as daylight fades at 19:00. Plan outdoor activities wisely to minimize sun damage 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.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Santarem

The UV Index in this region shows extreme exposure levels year-round, with values peaking at 16 during March and April. High-risk months for sun exposure are January through April, when the UV Index remains between 15 and 16, indicating a consistent burn time of just 10 minutes. While the UV Index slightly decreases from May to July, it stays at 11 to 13 for the rest of the year, maintaining a high risk of sunburn. To ensure safety, both residents and visitors should prioritize sun protection, such as wearing protective clothing, using broad-spectrum sunscreen, and seeking shade, especially during peak UV hours.

Monthly Maximum UV Index for Santarem, Brazil

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

The table above highlights how UV exposure in Santarem 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.

Santarem'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
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
Santarem	15	15	16	16	13	12	11	12	12	13	13	13