UV Index in Rantang, Indonesia

Last updated: July 2, 2025

In Rantang, Indonesia, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding the varying UV levels throughout the day can help you prevent sunburn and reduce the risk of long-term skin damage. With a tropical climate typical of the Aw zone, residents and visitors often face heightened UV exposure, particularly during peak hours when the index soars, reaching as high as 12 around noon. By being aware of these levels, you can make informed decisions about sun protection and enjoy the beautiful sunshine safely.

Hourly UV Index in Rantang

As the day unfolds, the UV Index begins to rise steadily, peaking at 12 around noon, indicating a high risk of harm from unprotected sun exposure. Starting from a mild 1 at 07:00, it climbs to 2 by 08:00, then surges to a significant 9 by 10:00. The intensity continues to escalate, reaching its maximum at 11 by 11:00, just before noon. After a slight dip to 8 by 14:00, the UV Index begins its gradual decline, dropping to 2 by 16:00, and finally resting at 0 by 18:00—a clear indication that the sun's rays are no longer a concern. To protect your skin, it's crucial to seek shade and apply sunscreen 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	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 min
15:00	5	moderate	30 min
16:00	2	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 Rantang

Throughout the year, UV Index levels remain consistently high, indicating extreme exposure risk. From January to April, the UV Index peaks at 16, presenting a significant risk of skin burns with a burn time of just 10 minutes. Although there is a slight decrease in the index during the summer months, May through July, the values still warrant caution, particularly in August and September when the index rises back to 16. Visitors and residents should be particularly vigilant during the high-risk months of February, March, September, and October, when the UV Index remains at its most dangerous levels. To mitigate risks, we strongly advise wearing protective clothing, using high-SPF sunscreen, and seeking shade whenever possible, especially during midday hours. This proactive approach is essential in safeguarding against the harmful effects of prolonged sun exposure.

Monthly Maximum UV Index for Rantang, Indonesia

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

The table above highlights how UV exposure in Rantang 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.

Rantang'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
Rantang	15	16	16	15	12	11	12	14	16	15	15	14