UV Index in Cuiaba, Brazil

Last updated: May 3, 2025

In Cuiabá, Brazil, being aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels is vital not only for preventing sunburn but also for reducing the long-term risks of skin damage and skin cancer. With the city’s characteristic tropical climate—where UV exposure can peak significantly, reaching values as high as 10 around midday—it's essential to stay informed. Whether you’re enjoying the outdoors or running errands, knowing when UV levels are at their highest can help you take the necessary precautions to protect your skin and enjoy the sun safely.

Hourly UV Index in Cuiaba

The UV Index throughout the day showcases a notable peak from 11:00 AM to 12:00 PM, where it reaches a high of 10, indicating very high levels of UV radiation and a strong need for sun protection. This intense sunlight starts to build up at 9:00 AM with a reading of 5, escalating to 8 by 10:00 AM. As the afternoon unfolds, the index gradually declines, dropping to 6 at 2:00 PM, followed by a significant decrease back to 3 by 3:00 PM. By the evening, the UV levels return to safe numbers, tapering off to 1 at 4:00 PM and 0 by 6:00 PM, prompting a welcome end to the day’s sun exposure. Always remember to take precautions 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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	10	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 Cuiaba

The UV Index exhibits significant seasonal variation, with highest values occurring during the winter months of January and February, both reaching an extreme index of 16. This is followed by a gradual decline in March and April, yet remains critically high. From May to July, the UV Index drops slightly but remains in the very high category, with burn times extending to 15 minutes. The trend shifts again in August and September, where the UV Index returns to extreme levels, peaking again in November at 15. For residents and visitors, caution is advised during these high-risk months, particularly from January to April and again from August to October. It is crucial to protect your skin with adequate sunscreen, clothing, and shade, as burn times are exceedingly short, ranging from 10 to 15 minutes.

Monthly Maximum UV Index for Cuiaba, Brazil

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

The table above highlights how UV exposure in Cuiaba 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.

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