UV Index in Koa, Indonesia

Last updated: May 3, 2025

In Koa, Indonesia, understanding the UV Index is essential for protecting your skin and overall health. The sun can be particularly intense here, with UV levels peaking at 12 during midday hours, indicating a high risk of harm from unprotected sun exposure. By being aware of these levels, you can take proactive steps to prevent sunburn and long-term skin damage. Given Koa's tropical climate, daily UV exposure risks can vary significantly, making it crucial to stay informed and safeguard yourself against the sun's rays.

Hourly UV Index in Koa

As the sun rises, the UV Index starts off mild at 1 at 07:00, but it quickly gains intensity as the day progresses. By 09:00, it escalates to 6, signaling that sun protection is becoming essential. The peak occurs at 11:00 and 12:00, where the index reaches a striking 12, representing a high risk of harm from unprotected sun exposure. Fortunately, the intensity begins to wane after 13:00, dropping to 10 and continuing its descent throughout the afternoon. By 16:00, it falls to a negligible 1, and the UV exposure dwindles to 0 by 18:00 and 19:00. It's a day to enjoy the sun but remember to stay protected 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	3	moderate	30 min
09:00	6	high	25 min
10:00	10	very high	15 min
11:00	12	extreme	10 min
12:00	12	extreme	10 min
13:00	10	very high	15 min
14:00	7	high	25 min
15:00	4	moderate	30 min
16:00	1	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Koa

Throughout the year, UV Index levels remain alarmingly high, with January through April registering an extreme exposure category, peaking at 16 in both February and March. Notably, July, August, and October also exhibit extreme levels of UV radiation. June marks a slight decrease to a very high category of 10, providing a brief respite. Despite this, the high-risk months for UV exposure span from January to April and again from July to October, during which a mere 10 minutes of unprotected sun exposure can lead to burns. It is crucial for both visitors and residents to take preventive measures such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risks associated with prolonged sun exposure.

Monthly Maximum UV Index for Koa, Indonesia

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

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

Koa's solar exposure compared to other cities in Indonesia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Surabaya UVI	13	15	14	12	12	10	11	12	14	13	13	13
Bekasi UVI	14	16	16	14	11	10	10	11	13	15	14	13
Jakarta UVI	14	16	16	14	11	10	10	11	13	15	14	13
Medan UVI	13	15	15	15	14	12	12	13	14	14	13	12
Bandung UVI	15	16	16	15	12	11	11	12	14	15	15	14
Koa	15	16	16	14	12	10	11	13	15	16	15	15