UV Index in Lontar, Indonesia

Last updated: July 2, 2025

In Lontar, Indonesia, understanding the UV Index is crucial for safeguarding your skin and overall health. With its tropical climate, the region experiences intense sun exposure, particularly during midday hours when the UV Index can soar as high as 10. This makes it vital to be aware of UV levels to prevent sunburn and reduce long-term skin damage. By keeping an eye on the UV Index, residents and visitors alike can make informed decisions about sun protection, ensuring a healthier relationship with the beautiful Lontar sun.

Hourly UV Index in Lontar

As the sun rises, the UV Index begins its daily ascent, starting at a gentle 1 at 07:00. It climbs steadily, reaching 2 by 08:00, before making a significant leap to 5 at 09:00. The intensity peaks around midday, hitting a remarkable 10 from 11:00 to 13:00—a clear signal to protect your skin. Following this zenith, the UV Index gradually declines; it drops to 7 by 14:00, then further decreases to 4 at 15:00, and continues its descent to 2 and 1 in the late afternoon. By 18:00 and 19:00, the UV levels settle at 0, signaling that the sun is setting and the day’s UV exposure has passed. Remember, during peak hours, it’s crucial to wear sunscreen and seek shade to ensure your safety in the sun!

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	10	very high	15 min
12:00	10	very high	15 min
13:00	10	very high	15 min
14:00	7	high	25 min
15:00	4	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 Lontar

The UV Index experiences seasonal fluctuations, remaining at extreme levels from January through May, with values peaking at 16 in February and March. During this period, the burn time is critically short at just 10 minutes, urging residents and visitors to take necessary precautions like seeking shade and wearing protective clothing. July and August see a slight decrease to a very high category index of 10, allowing for a slightly longer burn time of 15 minutes. However, September to November returns to extreme levels again, with consistent indices around 15 and burn times of 10 minutes. As such, it is advised that individuals remain vigilant year-round, particularly in high-risk months like January through April and during early fall, to minimize the risk of overexposure and skin damage.

Monthly Maximum UV Index for Lontar, Indonesia

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

The table above highlights how UV exposure in Lontar 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.

Lontar'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
Lontar	14	16	16	15	12	11	10	10	13	15	15	14
Bandung UVI	15	16	16	15	12	11	11	12	14	15	15	14