UV Index in Rejosari, Indonesia

Last updated: July 2, 2025

Understanding the UV Index in Rejosari, Indonesia is crucial for safeguarding your skin against harmful sun exposure. With the region's tropical climate, where UV levels can soar, being aware of these readings helps you avoid sunburn and maintain long-term skin health. The daily UV Index peaks around noon, hitting a formidable 11, indicating a high risk of harm from unprotected sun exposure. By understanding these figures, you can take proactive measures to protect yourself and enjoy the beautiful sunny days that Rejosari has to offer, all while keeping your skin safe and healthy.

Hourly UV Index in Rejosari

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 Rejosari

The UV Index data indicates consistently extreme exposure levels throughout the year, with a notable high-risk period from January to April and again in September to November, where values reach up to 16 in October. Visitors and residents alike should be particularly vigilant during these months, as the burn time remains a rapid 10 minutes across all months analyzed. It is essential to adopt protective measures such as wearing sunscreen, hats, and protective clothing when outdoors, regardless of the month, to minimize the risk of skin damage from the sun's rays.

Monthly Maximum UV Index for Rejosari, Indonesia

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

The table above highlights how UV exposure in Rejosari 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.

Rejosari'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
Rejosari	15	15	15	14	12	11	11	13	15	16	15	15