It's relatively warm, rainfall is very light at … 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 in Hong Kong (September to mid-December) is firmly the best time to land in Hong Kong. The lowest temperature ever recorded in the history of Hong Kong is 0.0 degrees. November is the most beautiful month of the year, and therefore is suitable for long walks in local parks, cultural centers, and endless adoration for many of … Despite the official Lunar calendar telling us that autumn is mid way in late September or early October (because we have "Mid Autumn Festival", aka Lantern Festival aka burning wax festival!) The temperature in November prefers to be close to the mark of 23 degrees and the water temperature rarely drops below 20. By local standards, winter in Hong Kong is generally colder with temperatures ranging from 15C – 19C. This is despite its location beneath the Tropic of Cancer. However, because of northeast winter monsoon, temperature during winter can drop below 10 degrees. If you’re in Hong Kong … Autumn in Hong Kong. Winter usually starts in December and becomes cloudier towards February. Fall weather in Hong Kong is also the most predictable, with sudden changes in the weather unlikely. The coldest month is January and temperature reaches 14-18 degrees. in reality it isn't until late September that Autumn really starts from a weather perspective. The only autumn month is November, has a small temperature reduction, and the almost complete lack of rain.