UV Index in Florianopolis, Brazil

Last updated: June 2, 2025

Understanding the UV Index in Florianopolis, Brazil is crucial for residents and visitors alike, as it plays a vital role in sunburn prevention and long-term skin health. This beautiful coastal city experiences a Cfa climate, characterized by warm summers and mild winters, which can lead to heightened UV exposure, especially during midday hours. With UV Index levels reaching as high as 5 around noon, being informed allows you to take necessary precautions to protect your skin from harmful rays. By staying aware of the UV levels, you can enjoy the sun safely while minimizing the risks associated with overexposure.

Hourly UV Index in Florianopolis

The UV Index throughout the day reveals a notable oscillation in sun exposure. Early morning hours from 7:00 AM to 8:00 AM see a mild UV Index of 1, indicating minimal risk. As the sun ascends, the intensity rises sharply, peaking at 5 between 11:00 AM and 1:00 PM, marking the day’s highest risk for skin damage. Following this peak, the index tapers off in the afternoon, returning to a manageable 2 by 3:00 PM, before descending to a safe 0 by 6:00 PM. It’s clear that the primary concern for sun safety lies during mid-day; ensure to protect your skin when the UV Index hits its zenith!

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	2	low	45 min
10:00	3	moderate	30 min
11:00	5	moderate	30 min
12:00	5	moderate	30 min
13:00	5	moderate	30 min
14:00	3	moderate	30 min
15:00	2	low	45 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 Florianopolis

Throughout the year, UV index levels exhibit significant seasonal variation, with extreme levels recorded from January to March and again in October to November, requiring only 10 minutes of exposure for a burn. April marks a transition to very high levels with a burn time of 15 minutes, while May and August see a shift to a high UV index with 25 minutes before dipping to moderate levels in June and July. As we approach September, the UV index rises again to very high, necessitating vigilance. Visitors and residents should take proactive measures during the high-risk months, particularly from January to March and October to November, to minimize skin damage by using sunscreen, wearing protective clothing, and limiting sun exposure during peak hours.

Monthly Maximum UV Index for Florianopolis, Brazil

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

The table above highlights how UV exposure in Florianopolis 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.

Florianopolis'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
Florianopolis	15	14	12	10	7	5	5	7	10	12	14	15
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
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13