UV Index in Napili-Honokowai, United States

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Napili-Honokowai, where the sun's rays can pack a powerful punch. This coastal paradise boasts a tropical climate that often exposes individuals to elevated UV levels, peaking at a dangerous 13 between noon and 1 PM. By staying informed about UV index values, you can take essential precautions to protect your skin from sunburn and long-term health issues like skin cancer. As you enjoy the beautiful beaches and outdoor activities, remember to check the UV levels and equip yourself with sunscreen, hats, and protective clothing to ensure a safe and enjoyable experience under the sun.

Hourly UV Index in Napili-Honokowai

The UV Index peaks dramatically throughout the day, starting from a gentle 1 at 07:00 and gradually rising to an impressive 13 by 12:00. This midday surge marks the day’s highest UV exposure, with levels reaching 11 at 11:00 and 13:00. As the sun begins to descend, the index declines smoothly, tapering back to 8 at 15:00, then 5 at 16:00, and finally settling down to 1 by 18:00 and 19:00. It's essential to stay protected, especially during those peak hours, as the sun’s rays can be quite fierce!

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.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	3	moderate	30 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	5	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 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.

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.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5
Napili-Honokowai	8	10	11	12	12	13	13	13	12	11	8	8