UV Index in Franco da Rocha, Brazil

Last updated: May 3, 2025

In Franco da Rocha, Brazil, being aware of the UV Index is crucial for protecting your skin from the sun’s harmful effects. Understanding UV levels helps prevent sunburn and promotes overall skin health, making it essential for residents and visitors alike. With its humid subtropical climate (Cfa), Franco da Rocha experiences significant UV exposure, especially between 11 AM and 1 PM, when the UV Index peaks at 8. By staying informed about the daily UV Index, you can take necessary precautions and enjoy the beautiful Brazilian sun safely.

Hourly UV Index in Franco da Rocha

As the sun rises, the UV Index begins its ascent, starting at a mild 1 at 07:00. By 08:00, it gently climbs to 2, but it's not until 09:00 that it hits 3, signaling a clearer sky. The index takes a notable leap at 10:00, reaching a brisk 5, and peaks at 12:00 with a striking 8—the ideal time to seek shade or apply sunscreen! As the afternoon wears on, the index falls back to 7 at 13:00, and then gradually drops to 5 by 14:00. As the sun starts to set, there's a further decline, leaving the evening with a relaxed 1 at 16:00 and tapering off to 0 by 19:00. This detailed hour-by-hour progression highlights the importance of sun safety during the peak hours of the day!

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

Monthly UV Index Trends in Franco da Rocha

The UV Index exhibits significant seasonal fluctuations, with the highest levels consistently occurring in the winter months of January and February, where both register at 16, categorizing exposure as extreme and necessitating a mere 10 minutes of sun exposure before burning. Following closely, March through April also showcases extreme UV levels, before tapering slightly in May, where the index drops to 8 but remains in the very high range. June and July see mild reductions, landing at 6 and 7, respectively, representing high exposure risks with a burn time of 25 minutes. Nevertheless, as the season transitions back to fall, September and October return to extreme levels, particularly notable in September at 11 and October at 13, while November maintains a high index of 14. Visitors and residents should remain vigilant from January through April and again in September and October, as these are critical months for high UV exposure risks. It's advisable for everyone to adopt protective measures, including wearing sunscreen and protective clothing, during these high-risk periods to minimize adverse effects from UV exposure.

Monthly Maximum UV Index for Franco da Rocha, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Franco da Rocha. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec16151311867911131416
Data source: Statistical UV Index data for Franco da Rocha, 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 Franco da Rocha UV Index with Other Brazil Cities

The table above highlights how UV exposure in Franco da Rocha 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.
Franco da Rocha's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Rio de Janeiro UVI15141310767911121315
Sao Paulo UVI16151211867911131415
Franco da Rocha16161311867911131416
Belo Horizonte UVI171614129781012131416
Salvador UVI1414141310991212151514
Fortaleza UVI141415151311111213131313