UV Index in Penang, Indonesia

Last updated: June 2, 2025

In Penang, Indonesia, awareness of the UV Index is crucial for safeguarding your skin and overall health. With the tropical climate often exposing residents and visitors to heightened UV levels, understanding these fluctuations can help prevent sunburn and long-term skin damage. During peak hours, especially from 10 AM to 2 PM, UV Index levels can reach as high as 10, indicating a very high risk of harm from unprotected sun exposure. Stay informed and protected to enjoy all that beautiful Penang has to offer without compromising your skin health!

Hourly UV Index in Penang

In the early hours of the day, the UV Index starts low, peaking at 1 at 07:00 before gradually rising as the sun climbs higher in the sky. By 10:00, it reaches a noteworthy 8, escalating to its maximum level of 10 at 11:00 and 12:00—the prime hours for sun exposure. As the afternoon progresses, the index begins to decline: 9 at 13:00, followed by a drop to 7 at 14:00. The late afternoon sees it further decrease, with values falling to 4 at 15:00 and down to 1 by 17:00. Finally, the UV Index falls to 0 after 18:00, marking the end of a sun-drenched day. Keep in mind, when the UV Index is high, it's crucial to protect your skin!

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	9	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 Penang

Throughout the year, UV Index values exhibit seasonal changes, with particularly high-risk months from January to April, where the UV Index consistently reaches extreme levels of 15-16 and a rapid burn time of just 10 minutes. Although the UV index decreases slightly in June to a very high 10 (burn time of 15 minutes), it spikes again in July and August, maintaining the extreme category. Notably, September and October revert to extreme levels of 15, emphasizing the importance of sun safety measures. Residents and visitors should be vigilant during these months, wearing protective clothing, using broad-spectrum sunscreen, and seeking shade to prevent harmful UV exposure.

Monthly Maximum UV Index for Penang, Indonesia

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

The table above highlights how UV exposure in Penang 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.

Penang'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
Penang	15	16	16	15	12	10	12	13	15	15	15	14