UV Index in Francisco Sa, Brazil

Last updated: June 2, 2025

In Francisco Sa, Brazil, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding the UV levels can help you take precursors against sunburns and long-term skin damage, ensuring you enjoy the beautiful sun without the risks. With a tropical climate characterized by warm temperatures and significant UV exposure, residents and visitors alike should pay close attention to the daily fluctuations in UV intensity. During peak hours, especially between 11 AM and 1 PM, the UV Index can soar to 8, highlighting the importance of sun safety practices in this vibrant city.

Hourly UV Index in Francisco Sa

As the sun rises, the UV Index begins its ascent, starting at a gentle 1 by 7:00 AM. By 8:00 AM, it nudges up to 2, signaling a mild increase in UV exposure. The intensity heats up quickly, reaching a moderate 4 by 9:00 AM, before hitting its peak of 8 from 11:00 AM to 12:00 PM. This is the prime time for sun safety awareness! After noon, the UV Index gradually declines; by 3:00 PM, it recedes to 3, and as the day wanes, it drops significantly to 1 by 4:00 PM. By evening, UV levels have diminished, reaching 0 by 6:00 PM, offering a reprieve from the sun’s rays.

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	6	high	25 min
11:00	8	very high	15 min
12:00	8	very high	15 min
13:00	7	high	25 min
14:00	5	moderate	30 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 Francisco Sa

The UV Index exhibits notable seasonal variations, with extreme levels persisting from January through April and again in August, October, and November. Notably, the highest risk months are January, February, and March, where the UV Index reaches up to 16, indicating an extreme exposure category with a burn time of only 10 minutes. While UV levels decrease during late spring and summer, May through July still present very high exposure risks, especially with a UV Index peaking at 10 in May. As such, both visitors and residents should prioritize sun safety year-round, particularly during the high-risk months. It is advisable to wear protective clothing, apply sunscreen regularly, and seek shade during peak sunlight hours to mitigate the risks of UV exposure.

Monthly Maximum UV Index for Francisco Sa, Brazil

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

The table above highlights how UV exposure in Francisco Sa 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.

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