UV Index in Kailua-Kona, United States

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of Kailua-Kona, United States, given the region's predominantly sunny climate. With peak UV levels often reaching a striking 13 around midday, awareness of these levels can significantly enhance your skin health and help prevent sunburn. In this tropical paradise, where the sun shines brightly almost year-round, knowing when to seek shade or slather on sunscreen is essential for enjoying the outdoors safely and staying protected from harmful UV radiation. Keep an eye on the UV Index to make the most of your time in Kailua-Kona while safeguarding your skin!

Hourly UV Index in Kailua-Kona

At dawn, the sun begins its ascent with a UV Index of 1 at 07:00, gradually rising throughout the morning. By 09:00, it hits a moderate 6, urging early risers to slather on sunscreen. The peak intensity arrives around noon with a sizzling UV Index of 13, warning everyone to seek shade or don protective clothing. As the afternoon progresses, the numbers begin to dip, hitting 11 at 14:00 before steadily declining into the evening, where it plummets to a mere 1 by 18:00. Finally, as night falls by 19:00, the UV Index drops to 0, signaling the end of a sun-soaked day. Stay vigilant; the midday sun demands respect!

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	6	high	25 min
10:00	9	very high	15 min
11:00	12	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	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Kailua-Kona

The UV Index varies significantly throughout the year, with peak levels occurring during the warmer months. From February to September, the UV Index remains consistently high, reaching an extreme level of 14 in both July and August. The high-risk months for UV exposure are notably from February through October, where a burn time of just 10 minutes can result in skin damage. Visitors and residents should take precautions during these months, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours. As we approach the lower UV levels of November and December, with a UV Index of 8 and a longer burn time of 15 minutes, the risk remains substantial, but overall it's essential to stay vigilant year-round for UV safety.

Monthly Maximum UV Index for Kailua-Kona, United States

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

The table above highlights how UV exposure in Kailua-Kona 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.

Kailua-Kona'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
Kailua-Kona	8	11	12	13	13	13	14	14	13	12	9	8