UV Index in Hong Kong, Hong Kong

Last updated: July 2, 2025

In Hong Kong, being aware of the UV Index is crucial for protecting your skin from harmful rays and preventing painful sunburns. Understanding UV levels not only helps you enjoy the outdoors safely but also plays a significant role in maintaining long-term skin health. With its humid subtropical climate, Hong Kong experiences elevated UV exposure, particularly during midday hours, when indices can soar to dangerous levels of 13. By staying informed about these levels and taking appropriate precautions, you can enjoy the vibrant streets and beautiful parks of this bustling metropolis while keeping your skin safe.

Hourly UV Index in Hong Kong

At dawn, the sun begins its ascent with a UV Index of 1 at 07:00, gradually rising throughout the morning. By 09:00, it hits a moderate 6, urging early risers to slather on sunscreen. The peak intensity arrives around noon with a sizzling UV Index of 13, warning everyone to seek shade or don protective clothing. As the afternoon progresses, the numbers begin to dip, hitting 11 at 14:00 before steadily declining into the evening, where it plummets to a mere 1 by 18:00. Finally, as night falls by 19:00, the UV Index drops to 0, signaling the end of a sun-soaked day. Stay vigilant; the midday sun demands respect!

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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	12	extreme	10 min
12:00	13	extreme	10 min
13:00	13	extreme	10 min
14:00	11	extreme	10 min
15:00	8	very high	15 min
16:00	4	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Hong Kong

The UV Index experiences significant seasonal variation, with the highest levels typically occurring from March to October. During February to October, the UV Index often falls into the very high to extreme categories, with March to May peaking at an index of 14 in May. High-risk months are primarily from February (10) to October (11), where sunburn can occur in as little as 10 to 15 minutes of unprotected exposure. Residents and visitors are advised to take protective measures such as wearing sunscreen, protective clothing, and sunglasses, especially during these high-risk months to minimize the risk of skin damage.

Monthly Maximum UV Index for Hong Kong, Hong Kong

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

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

Hong Kong's solar exposure compared to other cities in Hong Kong. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Tung Chung UVI	7	10	12	12	14	13	13	13	12	11	9	7
Yuen Long Kau Hui UVI	7	10	12	12	14	13	13	13	12	11	9	7
Tsuen Wan UVI	7	10	12	12	14	13	13	13	12	11	9	7
Hong Kong	7	10	12	12	14	13	13	13	12	11	9	7
Kowloon UVI	7	10	12	12	14	13	13	13	12	11	9	7