UV Index in Sidoarjo, Indonesia

Last updated: July 2, 2025

In Sidoarjo, Indonesia, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn, especially given the region's tropical climate. Understanding UV levels throughout the day allows residents and visitors to take proactive measures against skin damage caused by excessive sun exposure. With UV Index values peaking at 12 around midday, careful planning is essential to minimize risk during the sunniest hours. By staying informed about these levels, you can better protect yourself while enjoying all that Sidoarjo has to offer under the sun.

Hourly UV Index in Sidoarjo

The UV Index varies dramatically throughout the day, peaking impressively at 12 around 11:00 AM, indicating a significant risk of harm from unprotected sun exposure. The morning starts off gently at a low 1 at 7:00 AM, climbing steadily to 4 by 8:00 AM and reaching 7 by 9:00 AM. As the sun climbs higher, the index surges to 10 at 10:00 AM before peaking, making midday the most hazardous time for sun exposure. Relief comes after noon, as the UV Index drops to 9 at 1:00 PM, then further declines to 3 at 3:00 PM. By late afternoon, it settles back to 1 by 4:00 PM and finally reaches 0 by 6:00 PM, providing a safe window for evening outdoor activities. Stay protected during the 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	4	moderate	30 min
09:00	7	high	25 min
10:00	10	very high	15 min
11:00	12	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 Sidoarjo

The UV index exhibits extreme levels throughout the majority of the year, with the highest values recorded from January to March, peaking at 15. This sustained intensity indicates that January, February, and March are some of the highest-risk months for sun exposure, with a burn time of just 10 minutes for unprotected skin. As the year progresses, the index slightly decreases but maintains high to extreme levels through April to August, before tapering to very high in June at an index of 10. Even in the fall and winter months, September to November see a return to an index of 14, reminding residents and visitors to be cautious. Therefore, it is important to always wear sunscreen, seek shade, and limit unprotected sun exposure, particularly during peak hours, especially in this high-risk period.

Monthly Maximum UV Index for Sidoarjo, Indonesia

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

The table above highlights how UV exposure in Sidoarjo 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.

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