UV Index in Butterworth, Malaysia

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Butterworth, Malaysia, where the tropical climate brings both beautiful sunshine and potential health risks. With UV levels frequently soaring to a maximum of 13 during the day, awareness is key to preventing sunburn and promoting overall skin health. Regularly checking the UV Index empowers you to make informed choices about sun exposure, ensuring you enjoy the outdoors safely. Don't underestimate the intensity of the sun's rays; even on seemingly mild days, Butterworth's typically strong UV radiation demands caution to keep your skin healthy and protected.

Hourly UV Index in Butterworth

As the day unfolds, the UV Index rises dramatically, peaking at an intense 13 between 1 PM and 2 PM. Starting gently at a mere 1 in the early morning hours, it climbs steadily, hitting a moderate 5 by 10 AM before soaring to a striking 11 at noon. By midday, outdoor activities demand caution as the UV levels reach their zenith. The index begins to taper off in the afternoon, dropping to 10 at 3 PM, and gracefully descends to a safe 1 by 6 PM, returning to the calm of sunset. Sun safety is crucial during the peak hours, especially when the UV Index 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	1	low	45 min
09:00	2	low	45 min
10:00	5	moderate	30 min
11:00	9	very high	15 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	6	high	25 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Butterworth

Throughout the year, the UV Index remains consistently high, indicating an extreme exposure category with a burn time of just 10 minutes across all months. Notably, the highest UV readings occur from February to April, with peaks of 15, making these the high-risk months for sun-related health issues. Despite a slight decrease in the index during summer and fall, the risk remains significant, particularly in March and February. Visitors and residents are strongly advised to take proactive measures to protect their skin, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours, ensuring safety against harmful UV radiation all year round.

Monthly Maximum UV Index for Butterworth, Malaysia

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

The table above highlights how UV exposure in Butterworth compares to other major locations across Malaysia. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Butterworth's solar exposure compared to other cities in Malaysia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Kampung Baru Subang UVI	13	15	15	14	13	12	12	13	14	14	13	12
Klang UVI	13	15	15	14	13	12	12	13	14	14	13	12
Kuala Lumpur UVI	13	15	15	14	13	12	12	13	14	14	13	12
Butterworth	13	15	15	14	14	13	12	13	14	14	12	12
Kota Bharu UVI	13	15	16	15	14	13	12	13	14	14	12	12
Johor Bahru UVI	13	15	16	14	13	12	12	13	14	14	13	13