UV Index in Itanhaem, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Itanhaém, Brazil, where the tropical climate presents unique sun exposure challenges. With UV levels peaking at a moderate 6 around midday, it's essential to be aware of the risks associated with prolonged sun exposure, such as sunburn and long-term skin health issues. By grasping how UV Index readings vary throughout the day—from a mere 1 in the early morning to a more concerning 6 during midday hours—individuals can take proactive steps to protect themselves, ensuring safe and enjoyable time under the sun in this beautiful coastal town.

Hourly UV Index in Itanhaem

The UV Index for the day shows a notable increase in solar intensity as the morning unfolds. Starting at a mild 1 between 07:00 and 09:00, the index rises sharply, peaking at 6 from 11:00 to 13:00. This is a clear indication that midday sun demands caution, with later hours dropping to 5 at 14:00 and gradually decreasing toward evening. By 18:00 and 19:00, the UV Index dips to 0, signaling a safe time to be outdoors without sun protection. Overall, this day encourages sun safety practices during those peak hours when the UV rays are most potent.

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
14:005moderate30 min
15:003moderate30 min
16:001low45 min
17:001low45 min
18:000low45 min
19:000low45 min

Monthly UV Index Trends in Itanhaem

Throughout the year, the UV Index exhibits significant seasonal variations, with the highest levels occurring in the winter months and early spring. From January to March, the UV Index remains extremely high, peaking at 15, indicating a risk of harm from unprotected sun exposure in just 10 minutes. The months of April and May see a slight decrease but remain very high, with a UV Index of 10 and 8 respectively, requiring 15 minutes of protection against sunburn. June and July provide some respite, classifying as high exposure with a burn time of 25 minutes, but the Index again spikes in August. The late summer and early fall return to extreme levels, particularly in September and October, where the Index hits 11 and 13. Finally, the UV levels surge back to extreme in November and December, which are crucial months for residents and visitors to emphasize sun safety. High-risk months include January, February, March, September, October, and November, where the recommended exposure time is only 10 minutes. To protect against harmful UV rays, it is essential for individuals to seek shade, wear sunscreen, and don protective clothing, especially during these peak months.

Monthly Maximum UV Index for Itanhaem, Brazil

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Itanhaem. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec15141210766811131415
Data source: Statistical UV Index data for Itanhaem, 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 Itanhaem UV Index with Other Brazil Cities

The table above highlights how UV exposure in Itanhaem 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.
Itanhaem's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Rio de Janeiro UVI15141310767911121315
Itanhaem15141210866811131415
Sao Paulo UVI16151211867911131415
Belo Horizonte UVI171614129781012131416
Salvador UVI1414141310991212151514
Fortaleza UVI141415151311111213131313