UV Index in Santa Helena, Brazil

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Santa Helena, Brazil, where the sun shines brightly in a tropical climate. Awareness of UV levels helps in preventing sunburn and protecting your skin health, particularly during peak hours when values soar. In Santa Helena, the UV Index can reach a high of 13 around midday, making it essential to take precautions. With UV exposure risks increasing throughout the morning and early afternoon, staying informed about the UV Index allows you to enjoy the beautiful weather while safeguarding your well-being.

Hourly UV Index in Santa Helena

As the day unfolds, the UV Index embarks on a thrilling ascent, reaching its peak around 11:00 AM and 12:00 PM at a blazing 13, indicating the need for sun protection. Visitors basking in the sunlight at 10:00 AM encounter a sharp rise to 10, while the early morning hours remain mild, with a low of 1 at 7:00 AM. As the afternoon approaches, the intensity wanes, dropping to a refreshing 5 by 3:00 PM, and further declines as the sun begins its descent, fading to 0 by 7:00 PM. This chart serves as a reminder that while midday sun can be relentless, the early and late hours offer a gentle reprieve for outdoor enthusiasts. Enjoy the sunshine, but don’t forget your sunscreen during those peak 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	3	moderate	30 min
09:00	6	high	25 min
10:00	10	very high	15 min
11:00	13	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 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 Santa Helena

Throughout the year, UV Index levels remain consistently high, indicating an extreme exposure category that calls for caution. January and February start the year with a UV Index of 15 and 14, respectively, before peaking at 16 in March and April. The UV Index gradually decreases in the summer months, reaching 12 in June and descending to 11 in July, but it remains significant. Notably, May to October sees UV levels hovering between 12 and 13, making visitations to outdoor areas risky. Residents and visitors alike should be especially vigilant during these high-risk months, ensuring they limit sun exposure to 10 minutes without sun protection, wear sunscreen, hats, and sunglasses, and seek shade whenever possible to safeguard their skin health.

Monthly Maximum UV Index for Santa Helena, Brazil

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

The table above highlights how UV exposure in Santa Helena 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.

Santa Helena'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
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13
Santa Helena	15	14	16	16	13	12	11	13	13	13	13	13