UV Index in Arraias, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Arraias, Brazil, where the sun's rays can be particularly intense. With a tropical Aw climate, individuals face heightened risks of sunburn and long-term skin damage. Awareness of UV levels not only aids in sunburn prevention but also contributes significantly to overall skin health. During peak hours, especially between 10:00 AM and 2:00 PM, the UV Index can reach levels as high as 10, reminding everyone to take necessary precautions to enjoy the beautiful sunshine safely.

Hourly UV Index in Arraias

The UV Index offers a glimpse into the sun's intensity throughout the day. At 07:00, it starts gently with a reading of 1, gradually climbing to 2 by 08:00. As the sun rises higher, the index peaks at an impressive 10 at 12:00, indicating the most potent rays. It slightly eases to 9 at 13:00 and then descends further to 7 at 14:00, before falling to 5 by 15:00. The late afternoon brings a significant drop, with the index retreating to 2 at 16:00 and dwindling to 1 by 17:00. By 18:00 and 19:00, the UV Index returns to 0, signaling the end of the sun's peak intensity for the day. Be sure to protect your skin during those midday hours when the sun is strongest!

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	7	high	25 min
15:00	5	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 Arraias

Throughout the year, UV levels exhibit significant seasonal changes, with extreme UV Index values dominating from January to April (UV Index 16 to 13), and again from August to November (UV Index 12 to 15). These months, particularly January to April and August, pose the highest risk, with a burn time of just 10 minutes. In contrast, June and July see a slight dip to a very high exposure category but still require caution, allowing a burn time of 15 minutes. Visitors and residents are advised to take proactive sun protection measures during these high-risk months—wearing sunscreen, protective clothing, and seeking shade whenever possible to mitigate harmful UV exposure.

Monthly Maximum UV Index for Arraias, Brazil

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

The table above highlights how UV exposure in Arraias 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.

Arraias'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
Arraias	16	15	14	13	11	9	10	12	13	15	15	15