UV Index in Joaima, Brazil

Last updated: July 2, 2025

Awareness of the UV Index is crucial for residents and visitors of Joaima, Brazil, where the tropical Aw climate brings vibrant sun and high UV exposure risks. Understanding UV levels is essential for effective sunburn prevention and maintaining skin health, especially during peak hours when indices reach as high as 9—the momentary danger zone. With typical midday temperatures leading to intense sun exposure, being informed about the UV Index helps you enjoy the natural beauty of Joaima while protecting your skin from harmful effects. Stay safe under the sun!

Hourly UV Index in Joaima

The UV Index throughout the day demonstrates a distinct peak during the midday hours, reaching its maximum of 9 at 11:00 AM and again at 12:00 PM. As the sun rises, the UV Index begins at a mere 1 at 7:00 AM, gradually climbing to 4 by 9:00 AM. However, once the clock strikes 10:00 AM, the intensity escalates sharply to 7 before hitting its zenith. Following this, there is a slight tapering off in the afternoon hours, with values nearing 6 at 2:00 PM and gradually decreasing to 3 by 3:00 PM. As daylight wanes, the UV Index plummets, dropping to 1 by 4:00 PM and finally settling at 0 by 6:00 PM, signaling an end to the sun's powerful rays for the day. This data emphasizes the importance of sun protection, especially during those peak hours between 10:00 AM and 2:00 PM.

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	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	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 Joaima

The UV Index exhibits significant seasonal variation, with extreme levels persisting from January through April and recurring again in August, October, and November, where burn times can be as short as 10 minutes. The high-risk months for UV exposure include January to April and August to November, where precautions are particularly crucial. Conversely, while May through July sees a reduction in UV levels to very high (10-15 minutes burn time), it remains essential for both visitors and residents to take protective measures during all months, especially in peak risk periods. It is advisable to seek shade, wear protective clothing, and apply sunscreen liberally to prevent skin damage throughout the year.

Monthly Maximum UV Index for Joaima, Brazil

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

The table above highlights how UV exposure in Joaima 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.

Joaima'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
Joaima	15	15	14	13	10	8	9	11	12	14	15	16
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13