UV Index in Ailuk, Marshall Islands

Last updated: July 2, 2025

In Ailuk, Marshall Islands, being aware of the UV Index is crucial for protecting your skin from harmful radiation. Understanding the UV levels helps residents and visitors alike prevent sunburn and maintain long-term skin health, particularly in this tropical climate where UV exposure can be intense. Typically peaking at UV Index levels of 13 during midday, Ailuk presents a significant risk for skin damage, making it essential to stay informed and take appropriate precautions when enjoying the sun. Remember, even on partially cloudy days, the UV rays can still pose a threat, so check the UV Index regularly to safeguard your skin while basking in the island's beauty.

Hourly UV Index in Ailuk

The UV Index on this particular day exhibits a striking pattern, peaking at 13 between 12:00 PM and 1:00 PM, indicating a very high risk of harm from unprotected sun exposure. Rising steadily from a gentle 1 at 7:00 AM, it escalates sharply to 11 by 11:00 AM and reaches its zenith at noon. After this intense midday exposure, the index begins to decline, falling to 5 by 4:00 PM, then gradually tapering off to 0 by 7:00 PM. It's a clear reminder to stay protected during those peak hours, especially when the sun is highest in the sky!

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	4	moderate	30 min
10:00	7	high	25 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	0	low	45 min

Monthly UV Index Trends in Ailuk

Throughout the year, the UV Index remains consistently high, signaling a seasonal trend of extreme UV exposure. Notably, March to September marks the period with the highest UV levels, peaking at 15 in March and April. Consequently, the high-risk months for sun exposure are January through September when the UV Index often reaches values that fall into the extreme category, with a burn time as short as 10 minutes. Visitors and residents are strongly advised to take precautions during these months, which include wearing protective clothing, utilizing broad-spectrum sunscreen, and seeking shade whenever possible. As the year progresses into October and November, the UV Index does decrease slightly, but caution is still warranted as the levels remain in the very high to high range.

Monthly Maximum UV Index for Ailuk, Marshall Islands

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Ailuk. 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 Ailuk, 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 Ailuk UV Index with Other Marshall Islands Cities

The table above highlights how UV exposure in Ailuk compares to other major locations across Marshall Islands. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Ailuk's solar exposure compared to other cities in Marshall Islands. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Ailuk	12	14	15	15	14	13	13	14	14	13	11	10
Wotje UVI	12	14	15	15	14	13	13	14	14	13	11	10
Ebaye UVI	12	14	16	16	14	13	13	15	14	13	12	11
Arno UVI	13	14	16	16	15	13	13	14	14	13	12	11
Majuro UVI	13	14	16	16	15	13	13	14	14	13	12	11
Jabor UVI	13	15	16	16	14	13	14	14	14	13	12	11