UV Index in Rio Claro, Brazil

Last updated: June 2, 2025

Understanding the UV Index is vital for residents and visitors of Rio Claro, Brazil, where the subtropical climate leads to significant sun exposure. Being aware of UV levels not only helps in preventing painful sunburn but also plays a crucial role in maintaining long-term skin health. As Rio Claro enjoys sunny days, particularly from late morning to early afternoon when UV Index values peak at a moderate level of 6, it's essential to take precautions during these hours to safeguard yourself against harmful ultraviolet rays. By staying informed about the UV Index, you can enjoy the beautiful weather while protecting your skin!

Hourly UV Index in Rio Claro

As the day unfolds, the UV Index begins to rise, peaking sharply around midday. From a gentle 1 at 7 AM, it escalates to a moderate 6 between 11 AM and 1 PM, signaling peak sun exposure. During these crucial hours, it's essential to protect your skin with sunscreen and wear appropriate clothing. As the afternoon progresses, the intensity wanes, dropping to 4 at 2 PM and further declining to 3 by 3 PM. By 4 PM, it returns to a safe 1, and finally settles to 0 after sunset, making late afternoon and evening hours ideal for outdoor activities without the risk of UV damage. Stay informed and enjoy the sun responsibly!

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
09:002low45 min
10:004moderate30 min
11:006high25 min
12:006high25 min
13:006high25 min
14:004moderate30 min
15:003moderate30 min
16:001low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Rio Claro

Throughout the year, the UV Index shows significant seasonal changes, with high-risk months primarily falling between January and April, where the UV Index remains at an extreme level of 16 to 11 and the burn time is limited to just 10 minutes. This level of risk returns in September through November, where the index spikes again to numbers as high as 14 for November. May introduces a decrease to a very high category with an index of 8, followed by June and July, which stabilize at a high level with an increased burn time of 25 minutes. By August, there's a resurgence to very high, so caution is advised. Therefore, visitors and residents should prioritize sun safety by seeking shade, wearing protective clothing, and applying sunscreen, especially during the months of January to April and September to November when the risk of UV exposure is greatest.

Monthly Maximum UV Index for Rio Claro, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Rio Claro. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec161613118671012131416
Data source: Statistical UV Index data for Rio Claro, 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 Rio Claro UV Index with Other Brazil Cities

The table above highlights how UV exposure in Rio Claro 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.
Rio Claro's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Rio de Janeiro UVI15141310767911121315
Sao Paulo UVI16151211867911131415
Rio Claro161613118671012131416
Belo Horizonte UVI171614129781012131416
Salvador UVI1414141310991212151514
Fortaleza UVI141415151311111213131313