UV Index in Yona Village, Guam

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Yona Village, Guam, where the tropical climate brings high levels of sun exposure year-round. With midday UV levels peaking at a staggering 14, awareness of these fluctuations can help prevent sunburn and protect skin health. As you enjoy the beautiful beaches and outdoor activities, keeping an eye on the UV Index will help you mitigate risks associated with the intense sun, ensuring you stay safe while savoring the island’s stunning landscapes. Remember, even on overcast days, UV rays can still pose a threat—stay informed and protect your skin!

Hourly UV Index in Yona Village

The UV Index for the day presents a dynamic shift in sun exposure, climbing steadily from a safe 1 at 07:00 to an impressive peak of 14 at 12:00. As the sun rises, so does the intensity of its rays, reaching a notable 12 at 11:00. Between 10:00 and 14:00, the UV Index remains high, urging caution—particularly at 11:00 and 12:00, when protective measures are essential. As the afternoon progresses, values gradually dip, descending to 8 at 15:00 and further to 2 by 17:00. By evening, the UV Index falls to 0 at 19:00, signaling a welcome retreat from the sun's harmful rays. Remember to stay sun savvy during peak hours for your skin’s health!

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	9	very high	15 min
11:00	12	extreme	10 min
12:00	14	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 Yona Village

The UV Index exhibits extreme levels throughout the year, with consistent ratings between 11 and 15 from January to September. The highest UV Index of 15 occurs in March, April, and September, marking these as the high-risk months for sun exposure. Visitors and residents should be particularly cautious during these months, as the burn time is as short as 10 minutes across all months listed, indicating a significant risk of skin damage. To ensure safety, it is crucial to use adequate sun protection, such as broad-spectrum sunscreen, protective clothing, and seeking shade, especially during peak sun hours.

Monthly Maximum UV Index for Yona Village, Guam

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Yona Village. 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 Yona Village, 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 Yona Village UV Index with Other Guam Cities

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

Yona Village's solar exposure compared to other cities in Guam. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Yona Village	11	13	15	15	13	14	14	14	15	13	12	11
Barrigada Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Mangilao Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Tamuning-Tumon-Harmon Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Yigo Village UVI	11	13	15	15	13	14	14	14	15	13	12	11
Dededo Village UVI	11	13	15	15	13	14	14	14	15	13	12	11