UV Index in Napili-Honokowai, United States

Last updated: June 2, 2025

Understanding the UV Index in Napili-Honokowai is vital for protecting your skin and overall health. With UV levels frequently reaching extreme highs, particularly around midday, awareness of these fluctuations can help prevent sunburn and long-term skin damage. This tropical paradise boasts a warm climate that enhances outdoor activities but also brings elevated sun exposure risks. With the UV Index peaking at 13 during the sun's zenith, it's crucial to stay informed and take proactive measures to shield yourself. Embrace the sun safely by checking the UV Index daily and adopting protective strategies to enjoy the beautiful Hawaiian sunshine responsibly.

Hourly UV Index in Napili-Honokowai

The UV Index exposure throughout the day exhibits a striking progression, peaking at 13 around noon. Starting from a gentle 1 at 7 AM, the index gradually escalates, hitting 3 by 8 AM. As the morning unfolds, it climbs to 5 by 9 AM, reaching a significant 9 by 10 AM. The afternoon sun intensifies, culminating in a maximum value of 11 at 11 AM before surging to its zenith at 12 PM. Following the high point, the index gradually declines, dropping to 12 at 1 PM, and tapering off to 10, 7, and finally 4 by mid to late afternoon. As the sun sets, the UV Index diminishes further, resting at 1 by 6 PM and continuing through 7 PM. It’s advisable to take precautions during peak hours, especially between 11 AM and 1 PM, to ensure safety under the sun.

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
08:003moderate30 min
09:005moderate30 min
10:009very high15 min
11:0011extreme10 min
12:0013extreme10 min
13:0012extreme10 min
14:0010very high15 min
15:007high25 min
16:004moderate30 min
17:002low45 min
18:001low45 min
19:001low45 min

Monthly UV Index Trends in Napili-Honokowai

The UV Index demonstrates significant seasonal variation, with the highest levels occurring from March to October, peaking at 13 during the summer months of June to August. This period is categorized as extreme, with a burn time as short as 10 minutes for unprotected skin, indicating a high risk for sunburn. Notably, January and February also present very high exposure levels, with indices of 8 and 10, respectively, but longer burn times of 15 minutes. As such, both visitors and residents should take proactive measures to protect themselves during these months, especially between March and September when the UV Index is at its most dangerous. Recommendations include wearing broad-spectrum sunscreen, protective clothing, and seeking shade, particularly during peak sunlight hours.

Monthly Maximum UV Index for Napili-Honokowai, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Napili-Honokowai. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec810111212131313121188
Data source: Statistical UV Index data for Napili-Honokowai, 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 Napili-Honokowai UV Index with Other United States Cities

The table above highlights how UV exposure in Napili-Honokowai 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.
Napili-Honokowai'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
Houston UVI589111112121110975
Napili-Honokowai810111212131313121188