UV Index in Guaramirim, Brazil

Last updated: June 2, 2025

Staying informed about the UV Index is crucial for residents of Guaramirim, Brazil, where the subtropical climate can lead to varying levels of UV exposure throughout the day. Understanding UV levels is essential not just for sunburn prevention, but also for maintaining long-term skin health. With peak UV Index values reaching 6 around noon, the potential for harm increases significantly, especially during summer months. As you enjoy the vibrant atmosphere of Guaramirim, keep an eye on UV readings to protect yourself and your loved ones from the risks associated with sun exposure.

Hourly UV Index in Guaramirim

The UV Index today showcased a notable increase from the early morning hours, starting at a gentle 1 at 07:00 and 08:00. As the sun rose higher in the sky, the index climbed steadily, reaching a significant 6 by 12:00, indicating a peak in UV radiation and the need for sun protection. The afternoon saw a slight decline, with values dropping to 4 at 14:00 and falling further to 2 by 15:00. As the day wound down, the UV index returned to a safer range, ending the day at 0 by 19:00. It’s crucial to stay informed and safeguard your skin during those high UV 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	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	5	moderate	30 min
12:00	6	high	25 min
13:00	5	moderate	30 min
14:00	4	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 Guaramirim

The UV Index exhibits significant seasonal changes, with extreme levels predominantly found from January to April and returning in September to November. The highest-risk months are January, February, March, and April, where the UV Index reaches an extreme level of 15 to 11, necessitating a burn time of only 10 minutes. As we move into May and June, the UV Index drops to 7 and 6, classifying these months under the high category with a longer burn time of 25 minutes. In August, the Index spikes again to 8, categorized as very high, reducing the safe exposure time to 15 minutes. It's essential for visitors and residents to remain vigilant during these high-risk periods by applying sunscreen, seeking shade, and wearing protective clothing, particularly during midday hours when UV radiation is most intense.

Monthly Maximum UV Index for Guaramirim, Brazil

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

The table above highlights how UV exposure in Guaramirim 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.

Guaramirim'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
Guaramirim	15	14	12	11	7	6	6	8	11	13	14	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