UV Index in Caucaia, Brazil

Last updated: May 3, 2025

Understanding the UV Index is essential for residents and visitors in Caucaia, Brazil, where sunny skies are abundant and ultraviolet rays can be intense. By keeping an eye on UV levels, you can protect your skin from harmful effects such as sunburn and long-term skin damage. In Caucaia's warm and tropical climate, UV exposure risks peak around midday, with indices reaching as high as 13—indicating extreme danger. Staying informed about the UV Index can help you make better choices about sun protection, ensuring that you enjoy the beautiful beaches and outdoor activities safely.

Hourly UV Index in Caucaia

The UV Index data reveals a dynamic pattern throughout the day, with values gradually climbing after sunrise. At 07:00, the index starts at a modest 2 but jumps to 4 by 08:00. The intensity peaks at 11:00 and 12:00, reaching a high of 13, indicating a significant risk of harm from unprotected sun exposure. As the afternoon progresses, the UV Index declines, dropping to 7 at 14:00 and further plummeting to 1 by 16:00. After that, it falls to 0 by 18:00, signaling a safe end to sun exposure for the day. This data underscores the importance of sun safety measures, especially during the peak hours of 10:00 to 14:00 when the sun's rays are at their 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	2	low	45 min
08:00	4	moderate	30 min
09:00	8	very high	15 min
10:00	11	extreme	10 min
11:00	13	extreme	10 min
12:00	13	extreme	10 min
13:00	11	extreme	10 min
14:00	7	high	25 min
15:00	4	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 Caucaia

Throughout the year, the UV Index remains consistently high, with extreme exposure levels particularly prominent from January to April, where values peak at 14 to 15. March marks the highest index at 15, indicating significant risk for skin damage from prolonged sun exposure, which has a burn time of only 10 minutes. Although the index slightly decreases during the summer months of June and July (hovering around 11-12), the risk remains considerable. Visitors and residents are strongly advised to take protective measures—such as wearing sunscreen, hats, and sunglasses—especially during these high-risk months to prevent sunburn and long-term skin damage. Consistent protection is necessary year-round, as even in November and December, the UV Index remains at 13.

Monthly Maximum UV Index for Caucaia, Brazil

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

The table above highlights how UV exposure in Caucaia 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.

Caucaia'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
Caucaia	14	14	15	14	13	11	11	12	13	13	13	13
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13