For Business Class flights, the cheapest month to fly this route is May. The most expensive months are October and August.
In terms of precipitation, rainfall in Hong Kong ranges from 20.0 - 390.0 inches per month. June is typically the wettest month, when rainfall can reach 390.0 mm. January is typically the driest time to visit Hong Kong when rainfall is around 20.0 mm.
If weather is an important factor for your trip to Hong Kong, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 16.0 C).
Booking a Business Class flight 71 days in advance of your planned departure date is, on average, the best time to get cheap flights to Hong Kong. The general trend is that the closer you book to the departure date, the more expensive your flight will be.