UV Index in Kolonia, Micronesia

Last updated: July 2, 2025

In Kolonia, Micronesia, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike to take necessary precautions against the sun's harmful rays, particularly during the peak hours from 10 AM to 2 PM, when the UV Index can soar to 13—indicating a very high risk of harm from unprotected sun exposure. With an Af climate that features tropical conditions and significant UV exposure, it’s essential to stay informed and take proper measures to safeguard your skin while enjoying the beautiful outdoors.

Hourly UV Index in Kolonia

As the day unfolds, the UV Index rises steadily, reaching its peak between 12:00 PM and 1:00 PM with a remarkable index of 13. The sun's intensity starts to build from 8:00 AM with a value of 2, rapidly climbing to 8 by 10:00 AM. From 11:00 AM, the heat peaks at 12, only to slightly wane to 11 by 2:00 PM. Gradually, the UV Index declines, dropping to 8 at 3:00 PM, and then diminishing further to 4 by 4:00 PM. As evening approaches, the index returns to a more manageable level, resting at 2 by 5:00 PM and finally settling at 0 after 7:00 PM. Stay protected during the midday sun, when UV levels soar!

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	5	moderate	30 min
10:00	8	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 Kolonia

The UV Index data reveals a consistent trend of extreme sun exposure throughout the year, with notable peaks from February to April, where UV levels reach a maximum of 16. High-risk months for sunburn are primarily March and April, marked by prolonged exposure times of just 10 minutes before burning occurs. Visitors and residents are strongly advised to take precautions year-round, especially during these peak months, by wearing sunscreen, protective clothing, and sunglasses, while also seeking shade during peak sun hours to minimize the risk of UV damage. Being aware and proactive is key to enjoying outdoor activities safely.

Monthly Maximum UV Index for Kolonia, Micronesia

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

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

Kolonia's solar exposure compared to other cities in Micronesia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Kolonia	13	14	16	16	14	14	13	14	14	14	13	11
Kolonia Town UVI	13	14	16	16	14	14	13	14	14	14	13	11
Colonia UVI	12	14	16	16	14	13	14	15	14	14	12	11
Weno UVI	13	15	16	16	14	14	14	14	14	14	12	12
Tofol UVI	14	15	16	16	15	13	13	14	14	13	12	12