UV Index in Iuna, Brazil

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Iuna, Brazil, where the sun shines brightly throughout the year. Being aware of the UV levels can significantly help in preventing sunburn and protecting your skin health against harmful rays. With a climate characterized by hot summers, Iuna experiences varying UV exposure, peaking at a maximum index of 9 between 11:00 AM and 1:00 PM. This highlights the need for vigilance during these hours to safeguard your skin from potential damage. Stay informed and enjoy the sunshine responsibly!

Hourly UV Index in Iuna

The UV Index for today showcases a striking peak between 11:00 AM and 12:00 PM, where it reaches a high of 9, indicating a high risk of harm from unprotected sun exposure. As the day progresses, the index begins to taper off, transitioning to a 5 at 2:00 PM and then dropping further to 3 by 3:00 PM. The late afternoon brings a noticeable decline, finishing off with 1 at 4:00 PM and fading to 0 after 6:00 PM. If you're planning outdoor activities, the optimal time to soak up the sun safely is definitely before noon! Don’t forget your sunscreen during those 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	2	low	45 min
09:00	5	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	9	very high	15 min
13:00	8	very high	15 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 Iuna

Throughout the year, the UV Index shows significant fluctuations, with the highest levels occurring from January to April, where the index frequently reaches 16, categorizing exposure as extreme and indicating a burn time of just 10 minutes. This trend continues in September to November, with similarly high risks. May to August sees a slight decrease in UV intensity, but July and August still register as very high, with a burn time of 15 minutes; thus, caution is still essential. Visitors and residents are advised to take appropriate sun safety measures, particularly during high-risk months (January to April and September to November), by wearing protective clothing, applying sunscreen, and limiting sun exposure during peak hours.

Monthly Maximum UV Index for Iuna, Brazil

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

The table above highlights how UV exposure in Iuna 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.

Iuna'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
Iuna	16	16	14	12	9	7	8	10	12	14	15	15
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