Weather in Hong Kong: Climate, Seasons, and Average Monthly Temperature

Hong Kong, China. Hennessy Road, Causeway Bay.
Ken Welsh / Getty Images

Hong Kong weather is famous for its unpredictability, and rain can turn to shine in a matter of seconds. The city also hosts some of the world's more extreme weather.

In no particular order, Hong Kong weather warnings can be issued for black rain, direct-hit typhoons, extreme heat, thunderstorms, and landslides, but don't be put off; the city is also blessed with gallons of sunshine for plenty of the year.

Despite having a sub-tropical climate, the city does have four distinct seasons and a humid, subtropical climate. Summer is hot and humid, with occasional typhoons. Winters are colder and typically sunny, but sometimes cloudy in the later months. Spring and autumn are sunny and mostly dry. While snowfall in Hong Kong is very rare, the city experiences extreme rain, nearly exceeding 20 inches in June.

Fast Climate Facts

  • Hottest Month: July, 88 F (31 C)
  • Coldest Month: February, 55 F (13 C)
  • Wettest Month: June, 18.9 in.

Fall in Hong Kong

We start with Hong Kong weather in fall (September-mid-December), as this is firmly the best time to land in Hong Kong. During fall, humidity is low, while temperatures are warming and skies are bright; it's a perfect time to be in the city and be outdoors without the crushing heat of summer. Fall weather in Hong Kong is also the most predictable, with sudden changes in the weather unlikely. The average temperature during fall is 75 F (24 C). At just 20-30mm, rainfall is very light and there are few rainy days, especially toward the end of the year.

Humidity between September and December starts at an average of 83 percent, dropping to 74 percent. This sees humidity discomfort move from medium to low.

What to Pack: T-Shirt and shorts weather for most of the season, although you're advised to bring a sweater for evenings, especially towards the end of fall.

Average Temperatures by Month

September: 84 F (29 C) / 77 F (25 C)

October: 81 F (27 C) / 74 F (23 C)

November: 73 F (23 C) / 64 F (18 C)

Winter in Hong Kong

Winter weather in Hong Kong (mid-December-February) is noticeably cooler than the city's other seasons but is nevertheless mild. Snow is unheard of in Hong Kong, and frost occurs only once or twice a year—don't expect a white Hong Kong Christmas. Crisp, clear days, with little rain, do make winter a viable time to visit Hong Kong and much more enjoyable than the hot and sticky summers. Temperatures never plummet to bone-chilling, and you can expect 63 F (17 C) on average. Rainfall is reasonably uncommon in winter, averaging 30-40mm, and whole weeks can be effectively water free.

Humidity between December and February ranges from an average of 74 percent, rising to 82 percent. This is one of the best times to visit Hong Kong with discomfort level from humidity low.

What to Pack: Sweaters are necessary for most days, and a light jacket or coat will be needed for evenings. Seemingly the locals don't notice that it isn't really winter outside and will wrap themselves up like Polar Bears regardless. Ignore them; gloves and scarves are only needed by those who plan to stand in the freezer section of the supermarket for the duration of their holiday.

Average Temperatures by Month

December: 68 F (20 C) / 59 F (15 C)

January: 65 F (18 C) / 55 F (13 C)

February: 63 F (17 C) / 55 F (13 C)

Spring in Hong Kong

Accompanying spring's warmer weather is a raft of rain and showers and steamy humidity. Spring weather in Hong Kong (March-May), can bring wonderfully warm days with clear blue skies, or it can bring apocalyptic downfalls, resulting in black rainstorm warnings. It's so unpredictable that the only way to get a weather forecast is to look out the window. Humidity is relatively mild at the start of the season, but as spring becomes summer, you'll feel like a lobster in a pot. Temperatures rocket through the spring, starting at around 68 F (20 C) until they hit the mid-80s F towards summer.

Rainfall is equally spectacular, with an average of 90-120mm throughout the months of the season. Between March and May, Hong Kong's humidity gets on the march. The start of the season is relatively mild at 83 percent humidity but by May has risen to 87 percent. It may seem like a subtle shift, but it's an important one with discomfort levels shifting from low to medium to high.

What to Pack: Goggles and a snorkel might be the best advice—but seriously, some effective waterproofs are a must, as well as shorts and t-shirts for warmer days and sweaters for evenings.

Average Temperatures by Month

March: 66 F (19 C) / 60 F (16 C)

April: 75 F (24 C) / 66 F (19 C)

May: 82 F (28 C) / 73 F (23 C)

Summer in Hong Kong

Hong Kong weather in summer (June-August) can seem like swimming through soup. The sun beats down; the air is laced with humidity and shirts become tissues to stop sweat. A stroll around town can leave you looking like you've just completed a marathon. Added to this misery is the constant threat of summer showers, thunderstorms, and Hong Kong typhoons. Summer weather in Hong Kong is best avoided, unless necessary. The temperature averages at in the low 80s (27 C) for much of the summer and even at night doesn't drop significantly.

Rainfall can be extremely erratic, but on average you can expect 80-100mm. Summer is famous for its showers which, while frequent, should only keep you indoors for short thirty-minute periods. Humidity is at an all-time high throughout the summer, from 86 percent and discomfort levels are high.

What to Pack: T-Shirts and shorts; although those who easily burn in the sun may want to consider long sleeves or high factor sun cream. Raincoats are useless, as the sun will melt you and it like a candle; pick up an umbrella in town.

Average Temperatures by Month

June: 84 F (29 C) / 79 F (26 C)

July: 88 F (31 C) / 79 F (26 C)

August: 88 F (31 C) / 79 F (26 C)