UV Index in Bontang, Indonesia

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Bontang, Indonesia, as it plays a vital role in preventing sunburn and promoting skin health. With a tropical climate that typically exposes residents to high UV levels, it's essential to be aware of the fluctuating intensity throughout the day. For instance, during midday hours, like from 11:00 AM to 1:00 PM, UV levels can reach a staggering 13—a number that signals increased risk for skin damage. By staying informed about these UV levels, you can take proactive measures to protect yourself and enjoy the beautiful sun-soaked days in Bontang.

Hourly UV Index in Bontang

As the day unfolds, the UV Index rises dramatically, peaking at 13 around noon. Starting from a gentle 1 at 7:00 AM, it escalates to a moderate 2 by 8:00 AM and then takes a significant leap to 5 at 9:00 AM. By 10:00 AM, it reaches 8, intensifying further to a striking 11 at 11:00 AM. Just an hour later, the sun's rays hit their zenith with an impressive 13. The index then gradually declines, marking 12 at 1:00 PM, 9 at 2:00 PM, and 6 by 3:00 PM. As the afternoon wanes, the UV Index diminishes to 3 at 4:00 PM, and by sunset, it returns to a safe 1 at 7:00 PM, ultimately dropping to 0 by 8:00 PM. Remember to protect your skin 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	2	low	45 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	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 Bontang

Throughout the year, the UV Index remains extremely high, indicating that sun safety is crucial for both visitors and residents. The highest UV levels are observed from February to March, peaking at 17 in March, which poses a significant risk of skin damage within just 10 minutes of unprotected exposure. While summer months show a slight decrease, with June to August's indices ranging from 12 to 14, the risk remains considerable. October through December sees a slight reduction but still maintains an extreme exposure category of 13 to 15. Therefore, it is essential to minimize sun exposure, particularly during these high-risk months, ensure the use of broad-spectrum sunscreen, wear protective clothing, and seek shade whenever possible to safeguard against harmful UV radiation.

Monthly Maximum UV Index for Bontang, Indonesia

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

The table above highlights how UV exposure in Bontang 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.

Bontang'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
Bontang	14	16	17	15	14	12	13	14	14	15	14	13