UV Index in Koror, Palau

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Koror, Palau, where the tropical climate exposes individuals to varying levels of ultraviolet radiation throughout the day. With peak UV levels soaring to 13 around midday, awareness of these changes is essential for preventing sunburn and maintaining overall skin health. Knowledge of UV exposure risks helps you make informed decisions about sun safety, especially when enjoying outdoor activities in Koror's vibrant environment. Stay protected and enjoy the beauty of Palau while keeping your skin safe from harmful UV rays!

Hourly UV Index in Koror

The UV Index for the day demonstrates a significant rise and fall in intensity, peaking sharply at 11:00 AM and 12:00 PM with a staggering 13. Early in the morning, from 7:00 AM to 8:00 AM, the index starts low at 1, gradually increasing to 3 by 8:00 AM. As the sun climbs higher, a rapid escalation occurs, reaching 10 by 10:00 AM and hitting its maximum at noon. After this peak, the index begins to decline, dropping steadily to 9 at 2:00 PM, and later retreating to 1 by 5:00 PM. By 7:00 PM, the UV Index has faded to 0, reminding us of the crucial midday hours to protect our skin from UV exposure.

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	7	high	25 min
10:00	10	very high	15 min
11:00	13	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Koror

Throughout the year, the UV Index in this region remains notably high, consistently falling within the extreme exposure category, with burn times limited to just 10 minutes. The highest UV levels typically occur from February to April, peaking at an index of 16, making these months particularly hazardous for outdoor activities without protection. Although a slight decrease in UV intensity is observed in June and December, caution is still advised year-round due to the enduring extreme conditions. Visitors and residents are strongly recommended to take proactive measures, such as applying sunscreen, wearing protective clothing, and seeking shade to mitigate the risk of harmful skin exposure, especially during the peak months of February through April.

Monthly Maximum UV Index for Koror, Palau

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

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

Koror's solar exposure compared to other cities in Palau. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Mengellang UVI	13	14	16	17	15	13	14	15	15	14	13	12
Ulimang UVI	13	14	16	17	15	13	14	15	15	14	13	12
Koror	13	15	16	16	15	13	14	15	15	14	13	12
Kloulklubed UVI	13	15	16	16	15	13	14	15	15	14	13	12
Koror Town UVI	13	15	16	16	15	13	14	15	15	14	13	12