UV Index in Teresina, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Teresina, Brazil, where the tropical climate and high sun exposure can pose significant risks to skin health. With UV levels soaring to a maximum of 11 around midday, awareness of these fluctuations is essential for sunburn prevention and minimizing long-term damage. This knowledge helps you take proactive steps to protect yourself, especially during peak times when exposure is at its highest. As a vibrant city in a climate zone typically characterized by clear skies and intense sun, Teresina demands a vigilant approach to UV safety. Stay informed and enjoy the sun responsibly!

Hourly UV Index in Teresina

The UV Index throughout the day paints a vivid picture of solar intensity, peaking sharply in the late morning. At 07:00, the UV Index starts off modestly at 1, but by 08:00, it climbs to 3, indicating a gradual increase in sunlight. As the day progresses, it reaches 5 at 09:00 and then escalates dramatically to 8 by 10:00. The sun's strength hits its zenith at 11:00 with a striking 10, peaking even further at 12:00, where it soars to 11—an optimal time for sun protection. After this high, the UV Index begins to wane, falling back to 10 at 13:00, before declining steadily to 4 at 15:00, 2 at 16:00, and eventually drifting down to 1 by 17:00. As dusk approaches, the UV Index drops to 0 by 18:00, signaling a safe end to sun exposure for the day. Such daily fluctuations highlight the importance of being mindful of UV levels, especially during midday 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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	11	extreme	10 min
13:00	10	very high	15 min
14:00	7	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 Teresina

The UV Index in our region exhibits extremely high levels consistently throughout the year, peaking in March at 16 and remaining at 13-14 during the other months. January through April shows the highest UV exposure, making these high-risk months for sunburn, with a burn time as short as 10 minutes under direct sunlight. Visitors and residents should take precautions year-round, including wearing protective clothing, applying broad-spectrum sunscreen, seeking shade, and limiting sun exposure, especially during the midday hours to minimize skin damage and ensure safety.

Monthly Maximum UV Index for Teresina, Brazil

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

The table above highlights how UV exposure in Teresina 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.

Teresina'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
Teresina	14	14	16	15	13	11	11	12	13	13	13	14