UV Index in Cassilandia, Brazil

Last updated: May 3, 2025

Understanding the UV Index is essential for residents of Cassilandia, Brazil, where the climate's warmth can lead to notable sun exposure. Awareness of UV levels plays a critical role in preventing sunburn and promoting long-term skin health. With a typical mid-day peak UV Index reaching as high as 9, outdoor enthusiasts should be especially vigilant, as this signals a very high risk of harm from unprotected sun exposure. Given Cassilandia's Aw climate zone, where sunny days prevail, being informed about daily UV fluctuations is key to enjoying the sun safely while minimizing the risks associated with intense UV radiation.

Hourly UV Index in Cassilandia

As the sun rises, the UV Index starts off low, peaking at just 1 by 8 AM. However, as the day progresses, intensity increases, reaching a notable 6 by 10 AM and soaring to its maximum of 9 from noon to 1 PM. This peak signifies a time when sun safety becomes essential, urging you to seek shade and apply sunscreen. The afternoon sees a gradual decline with the index dropping to 5 by 3 PM and lower values as the sun begins its descent. By ~4 PM, the index falls to 2, and soon after, it returns to 1 by 5 PM, fading to 0 in the evening. Overall, it’s wise to take precautions during the midday hours when the UV levels are at their highest!

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	1	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	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 Cassilandia

The UV Index exhibits significant seasonal variation, with extremely high levels persisting from January through April, where the index remains between 14 and 16, resulting in a burn time of just 10 minutes. The high-risk months for UV exposure include January, February, March, and April, as well as October and November, all classified under the extreme exposure category. From May to July, the UV Index remains “very high” with values around 8 to 9, allowing for slightly longer burn times of 15 minutes. Visitors and residents are advised to exercise extreme caution during these months, particularly by wearing protective clothing, applying sunscreen regularly, and limiting sun exposure during peak hours to mitigate skin damage from the intense UV radiation.

Monthly Maximum UV Index for Cassilandia, Brazil

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

The table above highlights how UV exposure in Cassilandia 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.

Cassilandia'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
Cassilandia	16	16	14	12	9	8	9	11	12	15	15	16
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13