UV Index in Hong Kong, Hong Kong

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in Hong Kong, a vibrant city known for its sunny climate and high humidity. With the sun's rays reaching their peak at an index of 14 around noon, awareness of UV levels is essential for preventing sunburn and safeguarding skin health. By tracking the UV Index throughout the day, individuals can better plan outdoor activities and minimize the risk of UV-related harm. Given Hong Kong’s Cwa climate, where warm summers can result in intense sun exposure, staying informed about UV levels is not just beneficial—it's vital for protecting your skin while enjoying this beautiful locale.

Hourly UV Index in Hong Kong

As the sun rises, the UV Index begins its ascent, starting from a gentle 1 at 07:00. By 08:00, it climbs to 3, signaling the need for increased sun protection. The intensity peaks dramatically at 12:00 with a scorching 14, marking the most hazardous sun exposure period of the day. Just before noon, at 11:00, the UV Index hits 12, a warning to stay in the shade. By 14:00, it begins its descent, dropping to 11 and continuing down to a mild 4 by 16:00. The evening brings relief as the index falls to 0 by 19:00, allowing for a safe outdoor experience as the sun sets. Stay aware and protect your skin during those peak hours to enjoy your day safely!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:003moderate30 min
09:006high25 min
10:009very high15 min
11:0012extreme10 min
12:0014extreme10 min
13:0013extreme10 min
14:0011extreme10 min
15:007high25 min
16:004moderate30 min
17:002low45 min
18:001low45 min
19:000low45 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.
JanFebMarAprMayJunJulAugSepOctNovDec710121214131313121197
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.
 JanFebMarAprMayJunJulAugSepOctNovDec
Tung Chung UVI710121214131313121197
Yuen Long Kau Hui UVI710121214131313121197
Tsuen Wan UVI710121214131313121197
Hong Kong710121214131313121197
Kowloon UVI710121214131313121197