September in Hong Kong: Weather and Event Guide

September Events and Weather in Hong Kong

Lantern carnival during Mid-Autumn Festival, Hong Kong

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In the month of September, the Hong Kong weather almost imperceptibly takes a turn for the better. While the humidity remains slightly above comfort levels, it is substantially lower than in the summer months; the rain also begins to ease off.

That means Hong Kong in September is one of the better months to make a visit. Events like the fantastic Mid-Autumn Festival, or Mooncake Festival, also contribute to making September in Hong Kong a good month to stop by.

Hong Kong doesn't really have a high and low season for tourism, but September is busy with events and expos. These major trade fairs will make hotels a little busier, pushing prices a little upward.

Hong Kong Weather in September

With average highs of 87F (30C) and average lows of 75F (25C), September in Hong Kong marks the end of the oppressive heat of the summer months. Consider this your last chance in the year to visit one of Hong Kong's beaches; this is as warm as the water gets.

The humidity in September remains relatively high, at 80%; the outdoors will certainly still feel muggy as all hell, but it’ll get better as the month advances. Towards the end of September, you'll be able to hike the great outdoors and enjoy the city streets without soaking your shirt in sweat.

The rains during September average about 11.8 inches (300 mm), with rain falling on an average of 12 days in the month. This means brighter, bluer skies that mark a break with the monsoon summer months, and contribute to September’s enjoyable weather.

Unfortunately, September lies right in the middle of Hong Kong's typhoon season (May to November), meaning these tropical storms are a definite possibility when you visit at this time. The severe typhoon Mangkhut hit Hong Kong in September 2018, raising Hurricane Signal No. 10 (the highest level warning signal in the area).

Fire dragon during Mid-Autumn Festival
Pang Tze Ru/Getty Images

What to Pack for a September Trip

September’s split-personality weather calls for the following items to be placed in your packing list:

Summer clothes. Light cotton or moisture-wicking clothing will keep you cool in the heat and humidity. Wear clothes that allow your sweat to evaporate, instead of soaking it up – cotton, while cool, absorbs sweat and turns you into a sopping wet mess. Bring a light sweater for indoor (read: air-conditioned) activities.

Wear appropriate shoes – sneakers, flats or anything comfortable for walking, plus leather shoes if going to a luxury restaurant.

Sun/rain protection. September brings both surprise rains and bright blue skies. A small, foldable umbrella will handle both easily; Hong Kongers carry them to both ward off sunlight and stay dry in the rain. Wearing a raincoat in the Hong Kong humidity will only make you sweat.

If you’re planning to walk out in the open, handle UV rays with ultraviolet protection like sunglasses, sunscreen, and wide-brimmed headgear.

Liquids. Bring a water bottle when you walk about, so you can stay hydrated in Hong Kong’s heat.

Mosquito repellent. When venturing out to the New Territories, mosquito repellent is your friend.

Mooncake in Hong Kong
Cheryl Chan/Getty Images

September Events in Hong Kong

One festival dominates Hong Kong’s calendar in September. The Mid-Autumn Festival – the biggest festival in the city after Chinese New Year – commemorates the Chinese expelling their Mongolian overlords.

Like most great Chinese festivals, it involves plenty of parades and the festival's signature fire dragon dance. You'll also be introduced to Mooncakes: hockey sized puck cakes with a salted egg in the middle. Mooncakes are sold all around the city during the festival, and a must-try if you are in town.

Mid-Autumn Festival lantern carnivals – featuring traditional Chinese lanterns of all sizes – can be found at Victoria Park and the waterfront of Tsim Sha Tsui.

To watch Hong Kong’s most raucous Mid-Autumn Festival celebration, go to Tai Hang Village in Causeway Bay on the eve of the Mid-Autumn Festival. Tai Hang is the starting point for a 220-foot-long fire dragon that leads a procession from the village to Victoria Park.

Burning incense sticks cover the dragon from end to end – blazing a smokey, fragrant trail as hundreds of performers lead the dragon to the parade’s endpoint.

Relative to the Gregorian calendar, the Mid-Autumn Festival kicks off on the following dates: 2019: September 13; 2020: October 1; 2021: September 21; 2022: September 10

September Travel Tips

Follow these travel tips to survive your September Hong Kong trip:

  • First-time visitors should be wary of the humidity, which will leave you soaked in sweat after thirty minutes of walking. Be sure to take on plenty of liquids to battle against dehydration.
  • September is luckily free of clouds, but this means intense sun. Be sure to slap on some sun screen, even if you're only outdoors for twenty minutes or less.
  • To avoid the worst of September’s typhoon, visit the Hong Kong Observatory website’s typhoon monitoring page to see if any storms are expected, and what category storm to expect.
  • If traveling to the countryside, bring mosquito repellent. Hong Kong isn't overrun with mosquitos, but near water courses and lakes they can be a nuisance.
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