UV Index in Medan, Indonesia

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Medan, Indonesia, where the tropical climate brings elevated sun exposure risks throughout the year. Being aware of UV levels not only helps prevent painful sunburns but also plays a vital role in maintaining long-term skin health. With peak UV Index values reaching up to 12 around midday, it’s essential to take precautions to protect yourself from harmful rays. In Medan’s tropical wet climate, where sunny days are common, understanding and monitoring UV exposure can help you enjoy the outdoors safely while minimizing risks to your skin.

Hourly UV Index in Medan

The UV Index throughout the day exhibits a striking pattern of intensity and decline. Starting the morning at a mere 1 at 7:00 AM, the sun's rays gradually gain strength, reaching a moderate 4 by 9:00 AM. The peak intensity hits an impressive 12 at noon, making 12:00 PM the prime time for sun exposure, which is crucial for vitamin D. As the afternoon progresses, the index begins to taper off, with 11 at 1:00 PM and gradually decreasing to 6 by 3:00 PM. The evening brings a soothing end, with a return to 1 by 5:00 PM and finally dropping to 0 by 7:00 PM. This data underscores the importance of sun safety, particularly 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	2	low	45 min
09:00	4	moderate	30 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	3	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Medan

The UV Index exhibits remarkably high levels throughout the year, with particularly extreme values from January to April, where the index peaks at 15. The high-risk months for UV exposure are consequently January, February, March, and April, all maintaining the same burn time of just 10 minutes. As summer approaches, the index slightly decreases, yet it remains in the extreme exposure category. Notably, visitors and residents should exercise caution during these months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade to minimize the risk of harmful UV exposure. Staying vigilant is crucial, as even on less intense days, the potential for skin damage remains significant.

Monthly Maximum UV Index for Medan, Indonesia

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

The table above highlights how UV exposure in Medan 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.

Medan'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	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