UV Index in Kapolei, United States

Last updated: June 2, 2025

Awareness of the UV Index is crucial for residents of Kapolei, United States, where the tropical climate can lead to high sun exposure risks. Understanding UV levels is essential not only for preventing sunburn but also for promoting long-term skin health. With peak UV Index readings soaring to a severe 13 around midday, it's vital for Kapolei residents to stay informed and take protective measures against harmful ultraviolet radiation. Embrace the sunshine while prioritizing your skin’s safety!

Hourly UV Index in Kapolei

Beginning at 07:00, the UV Index (UVI) starts the day low at 1, gradually rising to a moderate 3 by 08:00. The real intensity kicks in around 09:00 with a UVI of 5, reaching a peak of 13 by 12:00. The sun shines brightest at 11:00, with the UVI soaring to 11, making it essential to take precautions. As the afternoon progresses, the index begins to wane, dropping to 10 at 14:00, and then further down to 7 by 15:00. By 16:00, the UVI decreases to 5, and as the sun sets, it gently falls to 1 again at 18:00. The day concludes with a UVI of 1 at 19:00, signaling a return to safer levels. Stay protected during the 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.
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	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 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 Kapolei

As the seasons change, so do the UV Index levels, which indicate varying risks of ultraviolet radiation exposure. Notably, March through October experience some of the highest UV Index readings, peaking at 13 in June, July, and August with an extreme exposure category and a burn time of only 10 minutes. High-risk months include February (UV Index 10), March (UV Index 11), and the summer months of June through August. Residents and visitors should take precautions, such as wearing sunscreen, protective clothing, and sunglasses, especially during these peak months. Even as November and December see lower levels, with UV Index readings of 8 and 7 respectively, it's wise to remain vigilant, as the potential for sunburn still exists. Always prioritize skin safety to enjoy the outdoors healthily!

Monthly Maximum UV Index for Kapolei, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Kapolei. 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 Kapolei, 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 Kapolei UV Index with Other United States Cities

The table above highlights how UV exposure in Kapolei 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.

Kapolei'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
Kapolei	8	10	11	12	12	13	13	13	12	11	8	7