UV Index in Suffolk, United States

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents of Suffolk, United States. As a region with a Cfa climate, Suffolk experiences significant sun exposure, especially during peak hours when the UV Index can soar to 11. By monitoring UV levels, you can effectively prevent sunburn and promote overall skin health, ensuring your outdoor activities remain safe and enjoyable. Awareness of these factors is vital, especially considering the risks associated with prolonged exposure to high UV levels. Stay informed and protect your skin while making the most of Suffolk's sunny days!

Hourly UV Index in Suffolk

The UV Index throughout the day follows a predictable rise and fall, peaking at 11 around 1:00 PM. Starting at a modest 1 at 7:00 AM, it gradually escalates, reaching 10 by 12:00 PM, signaling the need for sun protection. As the afternoon progresses, the index dips from 11 to 8 by 3:00 PM, then declines further to 2 by 6:00 PM, and finally settles back at 1 by 7:00 PM. This data underscores the importance of taking precautions during the hours of peak UV exposure, particularly between 11:00 AM and 3:00 PM, when levels are highest and pose the greatest risk to skin health.

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
11:008very high15 min
12:009very high15 min
13:0010very high15 min
14:009very high15 min
15:008very high15 min
16:005moderate30 min
17:003moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in Suffolk

As the seasons change, so do the UV Index levels, reflecting varying risks for sun exposure throughout the year. January sees a moderate UV Index of 4, with a burn time of 30 minutes, while February escalates to a high index of 6, reducing burn time to 25 minutes. The risks peak in spring and summer, with March through July experiencing very high to extreme levels, particularly in July at a dangerous 11, where just 10 minutes of sun can cause burns. As summer wanes, August and September remain risky, however, the index gradually decreases through October to December, where it levels out to a moderate index of 5 and 3 respectively, allowing for safer exposure of 30 minutes. For both visitors and residents, it is crucial to prioritize sun safety during the high-risk months of March through September, especially in July when the UV exposure is at its peak. Always wear protective clothing, utilize sunscreen, and seek shade during peak sunlight hours to mitigate the risk of harmful effects from UV radiation.

Monthly Maximum UV Index for Suffolk, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Suffolk. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec4689101011109753
Data source: Statistical UV Index data for Suffolk, 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 Suffolk UV Index with Other United States Cities

The table above highlights how UV exposure in Suffolk 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.
Suffolk'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
Suffolk4689101011109853
Los Angeles UVI46891011111010754
Houston UVI589111112121110975