UV Index in Sao Mateus do Maranhao, Brazil

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Sao Mateus do Maranhao, Brazil, where the tropical climate brings both beautiful sunny days and increased risks of UV exposure. Knowing the UV levels can significantly aid in preventing sunburn and protecting skin health, making it essential to stay informed. With peak UV Index values soaring to 13 during midday hours, it's vital to take precautions against harmful radiation. As you enjoy the warm, vibrant atmosphere of Sao Mateus, being aware of these UV risks will help you safeguard your health while soaking up the sun.

Hourly UV Index in Sao Mateus do Maranhao

The UV Index data reveals an intense sun exposure pattern throughout the day. Starting at 7:00 AM with a low of 1, the index climbs steadily, hitting 3 by 8:00 AM. As the sun rises, it reaches a striking 10 at 10:00 AM, peaking at a scorching 13 at noon. The intensity remains high with 12 at 1:00 PM before gradually tapering off from 8 at 2:00 PM to 5 by 3:00 PM. The afternoon sun begins to relent, falling to 2 at 4:00 PM, and finally dwindling to 1 by 5:00 PM and 0 by 6:00 PM, leaving the evening UV levels benign. Those outdoors should exercise caution during peak hours, particularly between 10 AM and 1 PM, when the sun is at its most potent.

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	3	moderate	30 min
09:00	6	high	25 min
10:00	10	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	8	very high	15 min
15:00	5	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 Sao Mateus do Maranhao

The UV Index in this region exhibits extreme levels throughout the year, with values consistently between 11 and 16. The high-risk months for sun exposure are from January to April, where the UV Index peaks at 16 in March, indicating a burn time of just 10 minutes under direct sunlight. Although the numbers decline slightly during June and July, they remain significant, hovering around 11 to 13. Visitors and residents are strongly advised to take precautions from January through November, particularly during the peak months, by seeking shade, wearing protective clothing, and applying a high-SPF sunscreen to mitigate the risks of sunburn and long-term skin damage.

Monthly Maximum UV Index for Sao Mateus do Maranhao, Brazil

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

The table above highlights how UV exposure in Sao Mateus do Maranhao 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.

Sao Mateus do Maranhao'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
Sao Mateus do Maranhao	15	14	16	15	13	11	11	13	13	13	14	13