UV Index in Petropolis, Brazil

Last updated: July 2, 2025

Understanding the UV Index in Petrópolis, Brazil, is essential for safeguarding your skin against harmful ultraviolet radiation. With its tropical climate, the city experiences significant UV exposure, particularly during midday when levels peak at 7, posing a risk for sunburn and long-term skin damage. Being aware of UV levels not only helps in preventing sunburn but also plays a critical role in maintaining overall skin health. Stay informed and take proactive measures to enjoy your time outdoors while minimizing the risk of UV-related health issues!

Hourly UV Index in Petropolis

The UV Index throughout the day paints a vivid picture of sun intensity, starting at a modest 1 at 07:00 and gradually climbing to its peak of 7 from 11:00 to 13:00. This high level signifies a heightened risk for prolonged sun exposure, perfect for sun lovers but cautionary for the rest. From the peak, the index starts to dip, dropping to 5 at 14:00 and dwindling to 1 by 16:00. As the sun begins to set, the UV Index plummets to 0 by 18:00 and remains in the safe zone through the evening. Plan your outdoor activities wisely, ensuring midday sun protection while enjoying the earlier and later 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	2	low	45 min
09:00	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	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 Petropolis

Throughout the year, UV Index levels exhibit significant seasonal variations, with extreme levels predominantly occurring from January to April and again in September to November. High-risk months include January to April and September to November, where the UV Index consistently reaches extreme levels (10 or above) with burn times as short as 10 minutes. In contrast, May to August shows a decrease in UV intensity, although May and August still classify as very high with burn times of 15 minutes. To ensure safety, it is crucial for both visitors and residents to take precautions during peak UV months by wearing suitable sun protection like sunscreen, hats, and sunglasses, particularly during midday hours when UV exposure is at its highest.

Monthly Maximum UV Index for Petropolis, Brazil

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

The table above highlights how UV exposure in Petropolis 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.

Petropolis'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
Petropolis	16	15	13	11	8	6	7	9	12	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