UV Index in Unai, Brazil

Last updated: June 2, 2025

In Unai, Brazil, staying informed about the UV Index is essential for protecting your skin and overall health. Understanding UV levels can help you effectively prevent sunburn and guard against long-term skin damage. Given Unai's Aw climate, characterized by warm temperatures and ample sunshine, the risk of harmful UV exposure is heightened, especially during peak hours. With a UV Index reaching up to 9 at noon, it's crucial to check daily levels and take appropriate precautions to enjoy the sun safely.

Hourly UV Index in Unai

The UV Index throughout the day reveals a striking pattern of solar intensity. Starting at a barely noticeable level of 1 at 07:00, the index gradually climbs to 2 by 08:00 and reaches a moderate 3 by 09:00. As the sun rises higher, we see a significant increase, peaking at an impressive 9 at 12:00. This intensity begins to wane in the afternoon, with values dipping to 8 by 13:00 and then falling to 6 at 14:00. By late afternoon, the index continues to decline, settling at 3 by 15:00, 2 at 16:00, and ultimately back to 1 by 17:00. As dusk approaches, the UV exposure diminishes completely, with readings of 0 by 18:00 and beyond, making it clear that sun protection is crucial during 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	3	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	9	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	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 Unai

The UV Index exhibits extreme levels throughout most of the year, particularly from January to April, where it consistently registers between 16 and 14, with a burn time of only 10 minutes. The months of February, November, and December are especially high-risk, maintaining the maximum UV Index of 16. As the season transitions into May and June, the index drops slightly to 10 and 9, respectively, categorized as very high, allowing for a burn time of 15 minutes. However, exposure remains significant, particularly in July and August, which experience a return to extreme levels and shorter burn times again. Visitors and residents should take precautions during these high-risk months by wearing broad-spectrum sunscreen, seeking shade, and wearing protective clothing, especially during peak sunlight hours.

Monthly Maximum UV Index for Unai, Brazil

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

The table above highlights how UV exposure in Unai 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.

Unai'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
Unai	16	16	14	13	10	9	10	12	13	15	16	16