UV Index in Lumajang, Indonesia

Last updated: July 2, 2025

In Lumajang, Indonesia, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help prevent sunburn and long-term skin damage, allowing you to enjoy the beautiful sunny days without worry. With a tropical climate marked by high UV exposure, especially during midday hours when the index peaks at 11, it’s essential for residents and visitors alike to stay informed about the sun’s intensity. Taking proactive measures against harmful UV rays can significantly enhance your outdoor experiences while safeguarding your skin’s health.

Hourly UV Index in Lumajang

The UV Index throughout the day presents a clear narrative of the sun's intensity. Starting at a gentle 1 at 07:00, the day quickly warms up, reaching 4 by 08:00. As the clock strikes 09:00, it escalates to 7, and by 10:00, it peaks at an intense 10. The intensity continues to surge, hitting a maximum of 11 from 11:00 to 12:00—a reminder to apply that sunscreen! Gradually, the index begins to decline, dropping to 9 at 13:00, and then diminishing to 6 by 14:00. From there, the UV levels swiftly taper off, resting at 3 by 15:00, and further declining to 1 by 16:00 and through 17:00. Finally, as the sun sets, the index cools off to 0 by 18:00, offering a soothing end to the day under the diminishing rays of light.

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	4	moderate	30 min
09:00	7	high	25 min
10:00	10	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 Lumajang

Throughout the year, UV exposure remains a significant concern, particularly from January to November, where the UV Index consistently ranks as extreme (14-15) or very high (10-12). The highest risk months, identified by an extreme UV index of 15, occur in February, March, September, October, and November, alongside consistently high values in the other months. Notably, the burn time is minimal, ranging from just 10 minutes in most months to 15 minutes in June. Visitors and residents are strongly advised to prioritize sun safety, utilizing SPF protection, wearing protective clothing, and limiting sun exposure during peak hours to prevent skin damage.

Monthly Maximum UV Index for Lumajang, Indonesia

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

The table above highlights how UV exposure in Lumajang 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.

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