UV Index in Arenapolis, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Arenapolis, Brazil, where the tropical climate brings intense sunlight year-round. As the sun's rays can lead to harmful effects such as sunburn and long-term skin health issues, being aware of the UV levels throughout the day is essential for sun protection. In Arenapolis, during peak hours, the UV Index can soar to 10, indicating a high risk of harm from unprotected skin exposure. With typical exposure risks amplified by the region's Aw climate, it's vital to stay informed and take necessary precautions to enjoy the sunshine safely.

Hourly UV Index in Arenapolis

The UV Index throughout the day showcases a striking rise and fall in intensity. Starting at a low of 1 at 07:00, it steadily climbs, reaching a peak of 10 by 12:00—the sun's strongest moment. As the day progresses, this maximum intensity begins to wane, with values dropping to 6 at 14:00 and tapering off to 1 by 17:00. Finally, as daylight fades, the UV Index diminishes to 0 by 18:00, signaling a safe reprieve from the sun's rays. Outdoor enthusiasts should be mindful of these fluctuations, especially between 10:00 and 14:00, when the risk of UV exposure 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	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	10	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	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 Arenapolis

The UV Index reveals significant seasonal changes in solar exposure, with high-risk months identified from January to March and later in August through November. During these peak periods, the UV Index reaches extreme levels of 16, with a dangerously short burn time of only 10 minutes, necessitating heightened sun safety precautions. Even in April and the summer months of May through July, where the index remains very high (values of 9 to 10), it is critical for both visitors and residents to protect their skin with adequate sunscreen, protective clothing, and by seeking shade, especially during midday hours. Overall, staying informed and proactive about UV safety is essential year-round, but especially during these high-risk months.

Monthly Maximum UV Index for Arenapolis, Brazil

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

The table above highlights how UV exposure in Arenapolis 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.

Arenapolis'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
Arenapolis	16	16	15	13	10	9	10	11	12	14	15	16
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13