UV Index in Jacarei, Brazil

Last updated: August 1, 2025

In Jacarei, Brazil, understanding the UV Index is crucial for maintaining skin health and preventing painful sunburns. With its Cfa climate, known for warm temperatures and high humidity, residents and visitors are particularly vulnerable to harmful UV radiation, especially during midday hours when the index peaks at 7. Being aware of the UV levels can help you take the right precautions to protect your skin from long-term damage while enjoying the beautiful outdoors. Stay informed, stay safe, and make the most of Jacarei's sunny climate!

Hourly UV Index in Jacarei

The UV Index for the day reveals a significant shift as the sun rises. Starting at a low 1 at 07:00 and 08:00, the intensity gradually ramps up, peaking at 7 during 12:00 and 13:00—prime time to protect your skin! As the afternoon progresses, it dips to 5 by 14:00, then descends further to 3 at 15:00. The latter part of the day sees a decline in UV exposure, returning to 1 by 16:00 and eventually dropping to 0 by 18:00 and 19:00. Be mindful of the midday sun; it's wise to wear sunscreen and seek shade when the UV Index is at its 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	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	9	very high	15 min
12:00	9	very high	15 min
13:00	8	very high	15 min
14:00	6	high	25 min
15:00	4	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 Jacarei

The UV Index demonstrates significant seasonal changes, with the highest levels occurring from January to April and during September to November. The most critical high-risk months for UV exposure, characterized by an extreme category rating (UV Index 16-14), are January, February, March, April, September, October, November, and December, where the recommended burn time is just 10 minutes. In contrast, May and August see very high UV levels with longer burn times of 15 minutes, while June and July lower the index to high levels, allowing for a burn time of 25 minutes. To ensure safety, both visitors and residents are advised to use sun protection diligently during these high-risk months and limit sun exposure, particularly during peak hours.

Monthly Maximum UV Index for Jacarei, Brazil

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

The table above highlights how UV exposure in Jacarei 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.

Jacarei'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
Jacarei	16	16	13	11	8	6	7	9	12	13	14	16
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