UV Index in Waipahu, United States

Last updated: May 3, 2025

In Waipahu, United States, understanding the UV Index is crucial for protecting your skin from harmful UV radiation. With peak UV levels reaching 12 during midday hours, residents and visitors must stay vigilant to prevent sunburn and long-term skin health issues. The local climate, characterized by ample sunshine, increases the risk of exposure, making it essential to check UV levels regularly. By staying informed, you can enjoy the beautiful Hawaiian outdoors while safeguarding your skin from the sun's damaging effects.

Hourly UV Index in Waipahu

The UV Index throughout the day showcases a dynamic dance of sun intensity. Starting at a mild 1 at 07:00, the index gradually rises, hitting 3 by 08:00. As the morning progresses, it peaks at a striking 12 between 12:00 and 13:00, indicating the strongest sun exposure—perfect for a beach day but not without caution! By 15:00, the UV levels begin to retreat, dropping to 7, and continue to fall, reaching 2 by 17:00. As the sun sets, the index dwindles further to 0 by 19:00, signifying a gentle end to the day. Remember to stay protected during those 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	12	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 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 Waipahu

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 Waipahu, United States

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

The table above highlights how UV exposure in Waipahu 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.

Waipahu'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
Waipahu	8	10	11	12	12	13	13	13	12	11	8	7