UV Index in Sam Rayburn, United States

Last updated: July 2, 2025

Understanding the UV Index in Sam Rayburn, United States, is crucial for safeguarding your skin against harmful ultraviolet rays. With peak UV levels often reaching 12 during midday, residents and visitors alike must be vigilant to prevent sunburn and protect overall skin health. The Cfa climate of Sam Rayburn means plenty of sunny days, which can significantly elevate UV exposure risks. By staying informed about daily UV index levels, you can enjoy the great outdoors while minimizing the potential for skin damage. Always remember: a little awareness goes a long way in maintaining a healthy glow!

Hourly UV Index in Sam Rayburn

As the day unfolds, the UV Index reveals a dynamic landscape of sun exposure. Starting with a gentle 1 at 07:00 and 08:00, the intensity begins to rise steadily, peaking at 12 between 13:00 and 14:00—prime time for taking precautions against harmful rays. At 11:00, the index hits 8, indicating a strong need for sun protection. The afternoon sees a slight decline, but still significant levels of 9 at 15:00, before tapering off to 4 by 17:00. As the sun dips lower, the UV Index reduces to a mellow 2 at 18:00, finally settling back at 1 as evening approaches. It's a clear reminder to manage your sun exposure wisely, especially 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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:006high25 min
11:008very high15 min
12:0011extreme10 min
13:0012extreme10 min
14:0011extreme10 min
15:009very high15 min
16:007high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Sam Rayburn

The UV Index shows a clear seasonal trend, with highest levels of ultraviolet radiation occurring from March to August, reaching a peak of 12 in June and July. February through April are also of concern, with very high levels requiring careful protection. The high-risk months are undoubtedly May through August, where the UV Index falls between 11 and 12, indicating an extreme exposure category and a significantly reduced burn time of just 10 minutes. Residents and visitors are strongly advised to take precautions during these months, such as wearing protective clothing, applying sunscreen with a high SPF, and avoiding direct sunlight during peak hours. From November to March, UV radiation is comparatively lower, but caution is still advised, particularly in February and March when the UV Index rises again. Staying informed and protected is essential to ensure skin safety year-round.

Monthly Maximum UV Index for Sam Rayburn, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Sam Rayburn. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec589101212121110864
Data source: Statistical UV Index data for Sam Rayburn, 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 Sam Rayburn UV Index with Other United States Cities

The table above highlights how UV exposure in Sam Rayburn compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Sam Rayburn's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Chicago UVI34689101098642
Brooklyn UVI35681010998642
New York City UVI35681010998642
Los Angeles UVI46891011111010754
Sam Rayburn589101112121110864
Houston UVI589111112121110975