UV Index in Guaranesia, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Guaranesia, Brazil, especially given the region's warm Cwa climate. Awareness of UV levels is essential for sunburn prevention and long-term skin health, helping you take the necessary precautions during the day. With peak UV exposure typically occurring between 11:00 AM and 1:00 PM—reaching levels as high as 8—it's vital to stay informed and protect your skin from harmful rays. Whether you're basking in the sun or enjoying outdoor activities, knowing the UV index can make a significant difference in your sun safety.

Hourly UV Index in Guaranesia

At sunrise, the UV Index starts gently at 1, peaking at 8 during the midday hours of 12:00 PM and 1:00 PM, indicating the sun's intensity is at its highest. As the day progresses, the index climbs steadily from 3 at 9:00 AM to its maximum of 7 at 11:00 AM, encouraging everyone to seek shade and wear sunscreen. By 2:00 PM, it begins to decline to 6, and continues to decrease, settling back to 1 by 5:00 PM and fading to 0 by 6:00 PM, signaling that the day is winding down. This fluctuation highlights the importance of being sun-smart during the 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	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	3	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 Guaranesia

The UV Index data reveals pronounced seasonal fluctuations in sun exposure risk, with extreme levels persisting from January to April and then resurging in September through November. The highest risk months are notably January, February, March, and December, all registering an extreme UV Index of 16, which corresponds to a rapid burn time of just 10 minutes. Visitors and residents are strongly advised to take precautions during these months—such as wearing sunscreen, protective clothing, and seeking shade—to mitigate the risk of skin damage. From May to August, while the UV Index drops slightly, it remains in the high to very high category; therefore, vigilance is essential throughout the year, especially during outdoor activities.

Monthly Maximum UV Index for Guaranesia, Brazil

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

The table above highlights how UV exposure in Guaranesia 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.

Guaranesia'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
Guaranesia	16	16	14	12	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