UV Index in Serra Negra, Brazil

Last updated: July 2, 2025

Staying informed about the UV Index is essential for residents and visitors of Serra Negra, Brazil, where the lush landscapes are often accompanied by strong sun exposure. Understanding UV levels is crucial for effective sunburn prevention and protecting your skin health, especially when the index can reach as high as 8 during midday hours. With Serra Negra's Cfa climate, characterized by warm summers and mild winters, awareness of UV risks becomes even more pertinent, as outdoor activities may lead to increased sun exposure. Remember, just a few minutes in peak sunlight can lead to serious skin damage—stay informed and protected!

Hourly UV Index in Serra Negra

The UV Index throughout the day presents a clear pattern, peaking around noon with a maximum value of 8, indicating that sun protection is crucial during this time. Starting from a low of 1 at 07:00 and 08:00, the index rises steadily, hitting 5 by 10:00. It escalates to its highest point at 12:00, before gradually declining to 7 at 13:00 and then dropping further as the afternoon progresses. By 16:00, the index has decreased to 2, and finally, it settles to 0 by 18:00, meaning minimal risk of harm from sun exposure as daylight fades. For outdoor enthusiasts, the best advice is to stay safe and protect against UV rays, especially around midday!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:005moderate30 min
11:007high25 min
12:008very high15 min
13:007high25 min
14:005moderate30 min
15:003moderate30 min
16:002low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Serra Negra

The UV Index exhibits significant seasonal variation, peaking during the winter and early spring months. From January to April, the UV Index remains in the extreme exposure category, with a consistent reading of 16. This is particularly important for visitors and residents, as the burn time is just 10 minutes. As we transition into warmer months, May through August presents very high UV levels, with indices dropping slightly but remaining impactful, especially in July and August. The burn time extends to 15 minutes during these months. September to November sees a return to extreme levels, with UV Index values between 12 and 16, and a burn time of 10 minutes. To protect your skin, all individuals should prioritize sun safety measures—such as using sunscreen, wearing protective clothing, and limiting sun exposure during peak hours—throughout the year, but especially during the high-risk months from January to April and again in September to November.

Monthly Maximum UV Index for Serra Negra, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Serra Negra. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec161613118681012141516
Data source: Statistical UV Index data for Serra Negra, 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 Serra Negra UV Index with Other Brazil Cities

The table above highlights how UV exposure in Serra Negra 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.
Serra Negra's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Rio de Janeiro UVI15141310767911121315
Sao Paulo UVI16151211867911131415
Serra Negra161613118681012141516
Belo Horizonte UVI171614129781012131416
Salvador UVI1414141310991212151514
Fortaleza UVI141415151311111213131313