UV Index in Fonte Boa, Brazil

Last updated: May 3, 2025

In Fonte Boa, Brazil, being aware of the UV Index is crucial for protecting your skin and overall health. With typical UV levels soaring, especially during midday hours, understanding these fluctuations is key to preventing sunburn and long-term skin damage. The tropical climate here presents unique exposure risks, peaking at a significant UV Index of 13 around noon. By staying informed, residents and visitors can enjoy the sun safely while safeguarding their skin’s well-being.

Hourly UV Index in Fonte Boa

As the day unfolds, the UV Index starts modestly, peaking at 1 by 7 AM and gradually rising to reach a significant maximum of 13 around 12 PM. This mid-day period is critical, where the sun's rays are at their strongest, marking urgency for sun protection. Following this peak, the UV levels begin to decline steadily, dipping to 10 at 2 PM and further decreasing to 3 by 4 PM. As evening approaches, the index returns to safe levels, ending the day at 0 by 7 PM. It’s an essential reminder to be vigilant around midday, where sun safety becomes paramount.

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	5	moderate	30 min
10:00	8	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Fonte Boa

Throughout the year, the UV Index in this region remains notably high, particularly during the first half of the year. January through April showcases an extremely high UV Index, peaking at 16, signaling the highest risk months for UV exposure. February and March maintain this level, emphasizing the need for vigilance. Even as summer progresses, the UV Index ranges from 11 to 13 from July through November, indicating a constant risk of sunburn within just 10 minutes of exposure. As such, it is crucial for both visitors and residents to take protective measures year-round, including wearing sunscreen, seeking shade, and wearing protective clothing, especially from January to April when the risk is at its most extreme.

Monthly Maximum UV Index for Fonte Boa, Brazil

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

The table above highlights how UV exposure in Fonte Boa 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.

Fonte Boa'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
Fonte Boa	14	15	16	16	13	12	11	12	13	14	13	13