Spring (March to
Temperatures and humidity rise gradually in spring. Evenings can be
cool but lightweight jackets suffice. The average temperature ranges
from 18oC-27oC (64oF-80oF),
humidity about 82 per cent.
Summer (late May to mid-September)
Hot and humid with temperatures ranges from 26oC-33oC
(78oF-91oF) and humidity near 86 per cent. Short
sleeves and cotton clothes work best, with a lightweight sweater for
indoors as restaurants tend to set air-conditioning on high. An
umbrella or hat works well to ward off the sun.
Autumn (late September to early December)
Clear and sunny days are the norm in autumn. Short sleeves and light
jackets are most suitable at this time of year. The average
temperature ranges from 18oC-28oC (64oF-82oF),
humidity about 72 per cent.
Winter (mid-December to February)
Winters are mild with low humidity at 72 per cent. Though the
temperature ranges from 14oC-20oC (57oF-68oF),
the mercury can drop to 10oC (50oF). Occasional
chills make woollens and overcoats necessary.
Hong Kong can sometimes be affected by extreme weather. The government
has issued a simple but effective warning system. There are five
grades of Tropical Cyclone Warning Signals (signals 1, 3, 8, 9 and 10,
with 10 being the highest). However, typhoons rarely pass directly
over Hong Kong. In addition, there are three Rainstorm Warning Signals
(amber, red and black, with black being the highest). When the typhoon
signal is 8 or above and/or the rain signal is black, visitors are
advised to stay in their hotels.