UV Index in Sumber, Indonesia

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Sumber, Indonesia, a region known for its tropical climate and abundant sunshine. With peak UV levels reaching a striking 11 around noon, awareness of these conditions is vital for sunburn prevention and long-term skin health. Keeping an eye on UV exposure not only helps in safeguarding your skin but also enhances your outdoor experience. Whether you’re enjoying the beautiful beaches or exploring vibrant local landscapes, being informed about the UV Index can help you enjoy Sumber’s sunny climate without risking your health.

Hourly UV Index in Sumber

As the sun rises, the UV Index climbs steadily, starting at a gentle 1 at 7:00 AM. By 8:00 AM, it reaches 3, marking the beginning of increased sun exposure. The day continues to heat up, with the index peaking at a remarkable 11 from 11:00 AM to 12:00 PM, indicating a high risk for harm from unprotected sun exposure. As the afternoon sets in, it gradually declines, dropping to 6 by 2:00 PM and subsequently to 3 by 3:00 PM. As the sun begins to descend, the index returns to a safer 1 by 4:00 PM and tapers off to 0 after 6:00 PM. This hourly trend underscores the importance of sun protection during the midday hours when the UV exposure is at its highest.

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	9	very high	15 min
11:00	11	extreme	10 min
12:00	11	extreme	10 min
13:00	9	very high	15 min
14:00	6	high	25 min
15:00	3	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 Sumber

The UV Index exhibits significant seasonal variation, peaking during the early months of the year with values reaching up to 16 in February and remaining extremely high through March and April. Notably, the high-risk months for UV exposure are from January to April, as well as July through September, when the UV Index often hits extreme levels, leading to a burn time of just 10 minutes for unprotected skin. As temperatures rise into the summer months, the index drops slightly, with June showing a very high level of 10, and a burn time of 15 minutes. Visitors and residents should take precautions by applying sunscreen, wearing protective clothing, and seeking shade during peak hours, especially in the high-risk months to minimize the risk of skin damage.

Monthly Maximum UV Index for Sumber, Indonesia

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

The table above highlights how UV exposure in Sumber 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.

Sumber'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
Sumber	14	16	15	13	13	10	11	13	14	14	14	14
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