UV Index in Ko Olina, United States

Last updated: June 2, 2025

Understanding the UV Index in Ko Olina, United States is crucial for residents and visitors alike, as it serves as a vital tool for sun safety. With Hawaii's beautiful beaches and sunny climate, awareness of UV levels can significantly impact sunburn prevention and overall skin health. Ko Olina typically experiences high UV exposure, especially during midday when the UV Index peaks at 12, indicating very high risk of harm from unprotected sun exposure. By regularly checking the UV Index, you can enjoy sunny days while effectively safeguarding your skin against harmful effects.

Hourly UV Index in Ko Olina

As the day unfolds, the UV Index experiences a dramatic rise, peaking at 12 between noon and 1 PM, indicating a high risk of harm from unprotected sun exposure. Early morning begins with a gentle 1 at 7 AM, gradually climbing to a moderate 5 by 9 AM. Come 10 AM, the sun’s intensity escalates to a striking 8, setting the stage for the day’s most potent rays. After the afternoon peak, the index gradually descends, falling to a moderate 5 by 4 PM and tapering off to a safe 1 as sunlight wanes, creating a dynamic dance of UV exposure that highlights the importance of sun safety throughout the day.

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	2	low	45 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 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 Ko Olina

Throughout the year, the UV Index shows significant seasonal changes, with the highest values occurring from March through October, categorizing these months as extreme risk for sun exposure. Notably, the peak occurs in July, with a UV Index of 13, necessitating a burn time of only 10 minutes for unprotected skin. High-risk months for sun exposure include March to October, where visitors and residents should exercise caution and take protective measures, such as applying sunscreen, wearing protective clothing, and seeking shade. In contrast, the UV Index decreases in November and December, with a lower risk and longer burn time at 15 minutes and 25 minutes, respectively. It's crucial for everyone to stay informed about the daily UV Index to ensure their safety while enjoying outdoor activities.

Monthly Maximum UV Index for Ko Olina, United States

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

The table above highlights how UV exposure in Ko Olina 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.

Ko Olina'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
Ko Olina	8	10	11	12	12	12	13	12	12	11	8	7