UV Index in Johor Bahru, Malaysia

Last updated: July 2, 2025

In Johor Bahru, Malaysia, awareness of the UV Index is crucial for safeguarding your skin from the sun's harmful rays. Understanding UV levels helps in preventing sunburn and maintaining skin health, making it essential for residents and visitors alike. With a tropical climate characterized by high humidity and intense sunlight, Johor Bahru often experiences elevated UV exposure risks, especially during midday hours. For example, between 11:00 AM and 1:00 PM, the UV Index peaks at an alarming 11 to 12, indicating a very high risk of harm from unprotected sun exposure. Stay informed and protect yourself to enjoy the beauty of Johor Bahru safely!

Hourly UV Index in Johor Bahru

The UV Index throughout the day shows a notable fluctuation, beginning with a gentle start. At 07:00 and 08:00, the index remains low at 1. However, as the morning progresses, it rises significantly, peaking at 12:00 with a striking 11, indicating intense sun exposure. The index remains elevated, reaching its maximum of 12 at 13:00, before gradually declining in the afternoon. By 15:00, it drops to 9, and then further to 3 by 17:00. As the day winds down, the UV Index falls back to a comfortable 1 by 18:00 and 19:00. This day's UV trend highlights the crucial need for sun safety measures, especially during the midday hours when the sun is at its strongest.

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	8	very high	15 min
12:00	11	extreme	10 min
13:00	12	extreme	10 min
14:00	11	extreme	10 min
15:00	9	very high	15 min
16:00	5	moderate	30 min
17:00	3	moderate	30 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Johor Bahru

Throughout the year, the UV Index remains consistently high, with values ranging from 12 to 16, categorizing all months as having an extreme exposure risk. The highest UV Index is observed in March at 16, while February shows a close value of 15. Visitors and residents should particularly be cautious during the peak months from February to April when the burn time is only 10 minutes. To mitigate the risk of skin damage, it is essential to take protective measures such as wearing sunscreen, sunglasses, and protective clothing, especially during these high-risk months. Regularly checking the UV Index and planning outdoor activities accordingly can help ensure safety under the sun year-round.

Monthly Maximum UV Index for Johor Bahru, Malaysia

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

The table above highlights how UV exposure in Johor Bahru 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.

Johor Bahru'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
Kota Bharu UVI	13	15	16	15	14	13	12	13	14	14	12	12
Johor Bahru	13	15	16	14	13	12	12	13	14	14	13	13