UV Index in Guaira, Brazil

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Guaira, Brazil, as it directly impacts sun safety and skin health. With the climate classified as Aw, inhabitants experience a tropical savanna environment that brings varying UV exposure risks throughout the day. Awareness of UV levels is vital for preventing sunburn and long-term skin damage, especially during peak hours when the UV Index reaches its highest points of 6 and 7 between 12:00 PM and 1:00 PM. By staying informed about the UV Index, you can confidently enjoy the sun while protecting your skin.

Hourly UV Index in Guaira

The UV Index for the day reveals a significant shift as the sun rises. Starting at a low 1 at 07:00 and 08:00, the intensity gradually ramps up, peaking at 7 during 12:00 and 13:00—prime time to protect your skin! As the afternoon progresses, it dips to 5 by 14:00, then descends further to 3 at 15:00. The latter part of the day sees a decline in UV exposure, returning to 1 by 16:00 and eventually dropping to 0 by 18:00 and 19:00. Be mindful of the midday sun; it's wise to wear sunscreen and seek shade when the UV Index is at its highest!

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	6	high	25 min
12:00	7	high	25 min
13:00	7	high	25 min
14:00	5	moderate	30 min
15:00	3	moderate	30 min
16:00	1	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 Guaira

The UV Index experiences significant fluctuations throughout the year, with extreme levels occurring from January to April and again in September to November, making these months particularly high-risk for sun exposure. In January, February, March, and April, the UV Index peaks at 16, indicating a burn time of just 10 minutes. As the seasons transition, the UV Index lowers in June to 7 and July to 8, where the exposure remains very high. However, even during the summer months, caution is advised, particularly from May to August, where burn times vary from 15 to 25 minutes. Residents and visitors should adopt sun-safe practices, such as wearing sunscreen, protective clothing, and seeking shade, especially during these high-risk periods. Regularly monitoring the UV Index is crucial to ensure safe outdoor experiences year-round.

Monthly Maximum UV Index for Guaira, Brazil

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

The table above highlights how UV exposure in Guaira 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.

Guaira'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
Guaira	16	16	13	11	9	7	8	10	12	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