It is essential to make sure that you plan your trip well and in time for the different seasons that Hong Kong has to offer. Hong Kong temperatures and climate mean that it is classed as sub-tropical, meaning that it can be temperate for almost half of the year. However, during the November and December months there can be a pleasant breeze, some sunshine and temperatures that are comfortable. Many people regard these two months as the best time to visit Hong Kong.
January and February can also been good times however, as it is more cloudy but with occasional cold fronts of weather, followed by drier northern winds. Temperatues can drop below 10 decrees C in the urban, built up areas. The lowest temperature on record for Hong Kong is still only 0 deg C so you will rarely see frosts, although these can occur at times on higher ground and also in the New Territories.
March and April can have spells of high humidity, although it can be pleasant too. The fog and drizzle can be troubleseom if you are travelling on high ground that is exposed to the southeast. Sometimes this can affect the air traffic and ferries due to this reduced visibility.
May through to august are generally hot times with high humidity and occasional showers and thunderstorms. These tend to occur mostly in the mornings. In the afternoon the temperature can reach 31 degress C or above, with the night times only dipping to around 26 degrees C. July can see some fine dry spells for up to a couple of weeks.
Generally July through to September are most common for tropical cyclones in Hong Kong, although gales can occur occasionally between May and November. On average, there tend to be around 31 tropical cyclones each year. These originate from the western North Pacific or China Seas and around half reach typoon strength with winds peaking at 118KPH.
The peak travel season is from September through to Christmas time.
Just before a tropical cyclone when it is around 700 – 1000 KM southeast of Hong Kong, the weather tends to be fine but hot. Isolated thunderstorms can appear in the evenings, but the winds will increase along with heavy, widespread rain when the centre of the cyclone comes close. This heavy rain can last for several days and you should be careful of landslips and flooding during these times due to flooding, which can be more dangerous than any damage caused by winds.
Hong Kong’s rainfall per year ranges from around 1300 millimetres at Waglan Island to more than 3000 millimetres in Tai Mo Shan. Most of this rainfall occurs during May and September. The wettest month in Hong Kong is August when it can rain for 4 days in a week and the monthly rainfall can average 391.4 millimetres. The driest month in Hong Kong is January when the average can be just 23.4 millimetres with just 6 days of rain in a week.
The most severe weather in Hong Kong includes tropical cyclones, strong winter monsoon winds, thunderstorms, waterspouts and hailstorms. Snow and tornadoes are very rare for Hong Kong.
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