UV Index in Penang, Indonesia

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Penang, Indonesia, as it plays a vital role in safeguarding skin health and preventing sunburn. With its tropical climate, Penang typically experiences high UV exposure, particularly during peak hours of the day, where the index can soar to levels of 12 around noon. By being aware of these UV levels, individuals can take proactive measures to protect themselves, ensuring enjoyable outdoor experiences without compromising their skin’s wellbeing. Stay informed and keep your skin safe while enjoying the vibrant beauty of Penang!

Hourly UV Index in Penang

The UV Index throughout the day reveals a dynamic range of solar intensity, peaking at 12 around noon. Starting the day gently, the index registers a low 1 at 7:00 AM, gradually rising to 2 by 8:00 AM. As the sun climbs higher, it reaches 5 by 9:00 AM, then surges to a robust 11 by 11:00 AM, signaling higher caution for outdoor activities. The peak at midday is a daunting 12, urging everyone to seek shade and wear protective gear. The intensity begins to taper off in the afternoon, dropping back to 8 at 2:00 PM and further to 5 by 3:00 PM. By the late afternoon, the index drops significantly to 1 at 5:00 PM and settles at 0 by 6:00 PM, giving a gentle reminder that the sun's might can vary dramatically throughout the day.

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	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 min
15:00	5	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