UV Index in Rongelap, Marshall Islands

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Rongelap, Marshall Islands, where the sun's intensity can pose real risks to skin health. As the UV levels can surge to a staggering 13 around midday, awareness plays a key role in preventing sunburn and protecting against long-term skin damage. With a tropical climate typical of the region, the risk of UV exposure is heightened, making it essential to monitor these levels daily. Stay informed and enjoy the sun safely by understanding how to protect your skin from harmful rays!

Hourly UV Index in Rongelap

The UV Index data reveals a fascinating daily pattern. In the early hours, from 7:00 AM to 9:00 AM, values are low, peaking at just 1. However, as the sun rises higher, the intensity escalates dramatically. By 10:00 AM, the index hits 7, and it continues to soar, reaching its peak of 12 at 12:00 PM. The afternoon sees the highest point at 1:00 PM, where it reaches an impressive 13, indicating a significant risk for sun exposure. Following this peak, the index gradually declines throughout the late afternoon, settling at 3 by 5:00 PM and returning to a safe level of 1 by 7:00 PM. This data illustrates the importance of sun safety, especially 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	1	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	9	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Rongelap

The UV Index experiences minimal fluctuation throughout the year, predominantly remaining in the extreme exposure category from January through October, with values ranging from 12 to 15. This indicates that the high-risk months for UV exposure are primarily during the spring and summer—specifically from March to September—when the index peaks at 15 in March. Even in the cooler months, such as November and December, the UV levels remain notably high, classified as very high with a UV Index of 11 and 10 respectively. Visitors and residents are advised to take precautions year-round, including wearing sunscreen, protective clothing, and seeking shade, especially during peak sunlight hours, to minimize the risk of skin damage.

Monthly Maximum UV Index for Rongelap, Marshall Islands

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

The table above highlights how UV exposure in Rongelap 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.

Rongelap'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
Rongelap	12	13	15	14	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