Table 1 (Warnings and signals issued in July 2020), Table 2 (Figures and departures from normal - July 2020). Average temperature is 28 C (82 F). It is also quite humid at this time so things can get very sweaty especially if you are rushing around the city. The total monthly rainfall was only 125.4 millimetres, about 33 per cent of the normal figure of 376.5mm. By local standards, winter in Hong Kong is generally colder with temperatures ranging from 15C – 19C. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! If you’re in Hong Kong … The unrelenting heat also necessitated the Very Hot Weather Warning to remain in force for 467 hours from July 11 to 30, setting the longest record since the introduction of the warning in 2000. There may be endless rainy days and the average rainfall is up to 324 mm, the second highest of the year. Winter usually starts in December and becomes cloudier towards February. The average temperature for May in Hong Kong is a hot under the collar, although not unpleasant 25°C (77°F). The 11 consecutive hot nights that started from July 5 also set a new record in terms of the number of consecutive hot nights for July. During this month, the average high temperature is 32°C (90°F) and the average low temperature is 27°C (81°F). However, because of northeast winter monsoon, temperature during winter can drop below 10 degrees. The coldest month is January and temperature reaches 14-18 degrees. The best month to swim in the sea is in July when the average sea temperature is 29.1°C (84°F). Summer Weather in Hong Kong June to September are the hottest months of the year, with average temperature up to 29C. The Hong Kong Observatory is a government department responsible for monitoring and forecasting weather, as well as issuing warnings on weather-related hazards. With a total of 21 hot nights, July 2020 was the month with the highest number of hot nights on record. With a long spell of sunny weather, the month was also much drier than usual. The wettest month is August with an average of 281mm of rain. The accumulated rainfall for the first seven months of the year was 1088.8mm, about 26 per cent below the normal figure of 1473.3mm for the same period. The Observatory also monitors and assesses radiation levels in Hong Kong, and provides other meteorological and geophysical services to meet the needs of the public and the shipping, aviation, industrial and engineering sectors. With plenty of sunshine and under light wind conditions, the maximum temperature at the Hong Kong Observatory soared to 35.3 degrees on July 23, the highest of the month. Even at their lowest, temperatures stay above 26C in summer so it really is quite warm. 68 F 20 C. The Hong Kong weather in July is the hottest in the whole year, but it’s not as scorching hot as in other cities in China. July is the hottest month in Hong Kong with an average temperature of 29°C (84°F) and the coldest is January at 16°C (61°F) with the most daily sunshine hours at 7 in August. The findings came after the Hong Kong Observatory said earlier this month that July was the hottest month the city has experienced since record-keeping began in 1884. May in Hong Kong is when the city’s humidity really starts to crank up and, while it’s ideal beach weather, the humidity can be tough on those who want to do a lot of walking on the city streets. The hottest is in July and August when the mean daytime temperature often exceeds 32 C (90 F). The monthly mean maximum temperature of 33.3 degrees, monthly mean temperature of 30.2 degrees and monthly mean minimum temperature of 28.3 degrees were 1.9 degrees, 1.4 degrees and 1.5 degrees above their corresponding normal figures respectively, all of them being the highest of the corresponding monthly mean values on record. The lowest temperature ever recorded in the history of Hong Kong is 0.0 degrees. Due to the stronger than usual subtropical ridge persisting over southern China for most of the time in the month, July 2020 became the hottest month in Hong Kong since records began in 1884. This is despite its location beneath the Tropic of Cancer. Moreover, there were 20 very hot days in the month, which is the highest number of very hot days in a month on record. The weather of summer from late May to the mid-September is extremely hot and humid, with frequent thunderstorms and occasional typhoons. Get the forecast for today, tonight & tomorrow's weather for Hong Kong, Sha Tin, Hong Kong. The temperature may seem like outdoor weather, but unfortunately.