UV Index in Januaria, Brazil

Last updated: July 2, 2025

In Januaria, Brazil, awareness of the UV Index is crucial for safeguarding your skin against harmful sun exposure. Understanding UV levels helps you take proactive measures to prevent sunburn and maintain long-term skin health, especially during the peak hours of sunlight. Known for its warm Aw climate, Januaria experiences significant UV exposure risks, particularly around midday, when the UV Index can soar to a high of 10. By staying informed about UV levels, you can enjoy the sunny outdoors while minimizing your risk of skin damage.

Hourly UV Index in Januaria

As the sun rises, the UV Index begins its climb, starting at a modest 1 at 07:00. By 08:00, it gently increases to 2, signaling a day of strengthening rays. The intensity peaks around 12:00 with a striking 10, indicating the time for caution and sun protection. As midday passes, the index gradually declines, dropping to 6 at 14:00 before continuing its descent to 4 at 15:00. By 17:00, it returns to a safer 1, and eventually fades to 0 after 18:00, marking a gentle close to the day. This data underscores the importance of seeking shade and wearing sunscreen during the midday hours when the UV exposure is at its most intense.

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	9	very high	15 min
14:00	6	high	25 min
15:00	4	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 Januaria

The UV Index experiences notable seasonal fluctuations, peaking at an extreme level of 16 in January and February, and gradually declining to a very high level of 10 by May and July, before again reaching extreme levels of 12 in August and September. High-risk months for sun exposure are predominantly from January through April, and again from August to November, where the UV Index remains at an extreme level of 12 or higher, indicating a burn time of just 10 minutes in most cases. Visitors and residents are strongly advised to take precautionary measures during these high-risk periods, such as seeking shade, wearing protective clothing, and using broad-spectrum sunscreen to mitigate the risks associated with UV radiation. Regularly monitoring UV levels can help ensure safe outdoor activities year-round.

Monthly Maximum UV Index for Januaria, Brazil

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

The table above highlights how UV exposure in Januaria 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.

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