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2025

21/09/2025
At 10 a.m. at the Hong Kong Observatory : Air temperature : 26 degrees Celsius Relative Humidity : 94 per cent During the past hour the mean UV Index recorded at King's Park : 0.5 Intensity of UV radiation : low Localised Heavy Rain Advisory: Rain is particularly heavy in Tai Po District. It may cause serious flooding. Residents who are likely to be affected are advised to take necessary precautions to avoid possible flood damage. Heavy rain of more than 70 millimetres of hourly rainfall has fallen or is expected to fall in the above regions. Please be reminded that:The Amber Rainstorm Warning Signal has been issued.The Thunderstorm Warning has been issued. It will remain effective until 1:00 p.m. today. A few squally thunderstorms are expected to occur over Hong Kong. The air temperatures at other places were: Hong Kong Observatory26 degrees ; King's Park26 degrees ; Wong Chuk Hang27 degrees ; Ta Kwu Ling25 degrees ; Lau Fau Shan26 degrees ; Tai Po25 degrees ; Sha Tin26 degrees ; Tuen Mun25 degrees ; Tseung Kwan O27 degrees ; Sai Kung27 degrees ; Cheung Chau25 degrees ; Chek Lap Kok25 degrees ; Tsing Yi26 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley26 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan26 degrees ; Kowloon City25 degrees ; Wong Tai Sin26 degrees ; Stanley28 degrees ; Kwun Tong26 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park26 degrees ; Yuen Long Park26 degrees ; Tai Mei Tuk25 degrees . Between 8:45 and 9:45 a.m., lightning was detected within Lantau, New Territories West, Hong Kong and Kowloon. The rainfall recorded in various regions were: Kwun Tong8 to 11 mm; Kowloon City7 to 9 mm; Tuen Mun7 to 20 mm; Wong Tai Sin7 to 11 mm; Sham Shui Po6 to 9 mm; Southern District6 to 19 mm; Yau Tsim Mong5 to 7 mm; Tsuen Wan3 to 18 mm; Eastern District2 to 8 mm; Central & Western District11 to 17 mm; Wan Chai10 to 13 mm; Tai Po1 to 41 mm; Islands District0 to 53 mm; Yuen Long0 to 5 mm; Kwai Tsing0 to 23 mm; Sha Tin0 to 23 mm; Sai Kung0 to 21 mm; North District0 to 17 mm.
21/09/2025
At 7 a.m. at the Hong Kong Observatory : Air temperature : 26 degrees Celsius Relative Humidity : 93 per cent Showers associated with the remnant of Mitag continue to affect the territory. Heavy showers are expected in some areas in the next couple of hours. Members of the public should stay alert. Intense gusts reaching 70 kilometres per hour or above may affect Hong Kong. Members of public should seek safe shelter as soon as possible. Please be reminded that:The Thunderstorm Warning has been issued. It will remain effective until 9:00 a.m. today. A few squally thunderstorms are expected to occur over Hong Kong. The air temperatures at other places were: Hong Kong Observatory26 degrees ; King's Park26 degrees ; Wong Chuk Hang26 degrees ; Ta Kwu Ling25 degrees ; Lau Fau Shan25 degrees ; Tai Po25 degrees ; Sha Tin26 degrees ; Tuen Mun25 degrees ; Tseung Kwan O25 degrees ; Sai Kung26 degrees ; Cheung Chau26 degrees ; Chek Lap Kok25 degrees ; Tsing Yi26 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley25 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan26 degrees ; Kowloon City25 degrees ; Wong Tai Sin26 degrees ; Stanley26 degrees ; Kwun Tong25 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park27 degrees ; Yuen Long Park25 degrees ; Tai Mei Tuk25 degrees . Between 5:45 and 6:45 a.m., lightning was detected within Lantau, New Territories East and New Territories West. The rainfall recorded in various regions were: Tuen Mun5 to 24 mm; Sham Shui Po4 to 8 mm; Yuen Long3 to 29 mm; Kwai Tsing3 to 16 mm; Wong Tai Sin2 to 4 mm; Kowloon City1 to 9 mm; Tai Po1 to 4 mm; Yau Tsim Mong1 to 4 mm; Tsuen Wan1 to 19 mm; Sai Kung1 to 15 mm; Kwun Tong1 mm; Sha Tin0 to 8 mm; Islands District0 to 40 mm; Central & Western District0 to 4 mm; North District0 to 2 mm; Eastern District0 to 1 mm; Southern District0 to 1 mm.
21/09/2025
At 4 a.m. at the Hong Kong Observatory : Air temperature : 27 degrees Celsius Relative Humidity : 94 per cent Please be reminded that:The Thunderstorm Warning has been issued. It will remain effective until 7:00 a.m. today. A few squally thunderstorms are expected to occur over Hong Kong. The air temperatures at other places were: Hong Kong Observatory27 degrees ; King's Park27 degrees ; Wong Chuk Hang27 degrees ; Ta Kwu Ling25 degrees ; Lau Fau Shan25 degrees ; Tai Po26 degrees ; Sha Tin26 degrees ; Tuen Mun26 degrees ; Tseung Kwan O26 degrees ; Sai Kung26 degrees ; Cheung Chau27 degrees ; Chek Lap Kok27 degrees ; Tsing Yi26 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley25 degrees ; Hong Kong Park26 degrees ; Shau Kei Wan27 degrees ; Kowloon City26 degrees ; Happy Valley27 degrees ; Wong Tai Sin26 degrees ; Stanley27 degrees ; Kwun Tong27 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park28 degrees ; Yuen Long Park25 degrees ; Tai Mei Tuk25 degrees . Between 2:45 and 3:45 a.m., lightning was detected within New Territories East. The rainfall recorded in various regions were: Tai Po1 to 15 mm; North District0 to 65 mm; Sai Kung0 to 6 mm; Tuen Mun0 to 6 mm; Sha Tin0 to 5 mm; Kwun Tong0 to 1 mm; Wong Tai Sin0 to 1 mm.
21/09/2025
At 1 a.m. at the Hong Kong Observatory : Air temperature : 27 degrees Celsius Relative Humidity : 91 per cent Showers associated with the remnant of Mitag are gradually affecting the territory. Heavy showers are expected in some areas in the next couple of hours. Members of the public please be aware of the change in weather. Please be reminded that:The Thunderstorm Warning has been issued. It will remain effective until 4:00 a.m. today. Squally thunderstorms are expected to occur over Hong Kong. The air temperatures at other places were: Hong Kong Observatory27 degrees ; King's Park27 degrees ; Wong Chuk Hang26 degrees ; Ta Kwu Ling27 degrees ; Lau Fau Shan26 degrees ; Tai Po27 degrees ; Sha Tin27 degrees ; Tuen Mun27 degrees ; Tseung Kwan O26 degrees ; Sai Kung27 degrees ; Cheung Chau26 degrees ; Chek Lap Kok29 degrees ; Tsing Yi26 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley26 degrees ; Hong Kong Park26 degrees ; Shau Kei Wan27 degrees ; Kowloon City27 degrees ; Happy Valley27 degrees ; Wong Tai Sin26 degrees ; Stanley27 degrees ; Kwun Tong27 degrees ; Sham Shui Po27 degrees ; Kai Tak Runway Park28 degrees ; Yuen Long Park26 degrees ; Tai Mei Tuk26 degrees . Between 11:45 p.m. and 0:45 a.m., lightning was detected within New Territories East. The rainfall recorded in various regions were: Sai Kung0 to 6 mm; Tai Po0 to 25 mm.
20/09/2025
At 10 p.m. at the Hong Kong Observatory : Air temperature : 27 degrees Celsius Relative Humidity : 93 per cent The air temperatures at other places were: Hong Kong Observatory27 degrees ; King's Park26 degrees ; Wong Chuk Hang26 degrees ; Ta Kwu Ling26 degrees ; Lau Fau Shan26 degrees ; Tai Po26 degrees ; Sha Tin26 degrees ; Tuen Mun26 degrees ; Tseung Kwan O26 degrees ; Sai Kung26 degrees ; Cheung Chau26 degrees ; Chek Lap Kok27 degrees ; Tsing Yi25 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley25 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan26 degrees ; Kowloon City26 degrees ; Happy Valley26 degrees ; Wong Tai Sin26 degrees ; Stanley27 degrees ; Kwun Tong27 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park28 degrees ; Yuen Long Park26 degrees ; Tai Mei Tuk26 degrees . Between 8:45 and 9:45 p.m., the rainfall recorded in various regions were: Sai Kung0 to 2 mm.
20/09/2025
At 7 p.m. at the Hong Kong Observatory : Air temperature : 26 degrees Celsius Relative Humidity : 94 per cent The air temperatures at other places were: Hong Kong Observatory26 degrees ; King's Park26 degrees ; Wong Chuk Hang26 degrees ; Ta Kwu Ling26 degrees ; Lau Fau Shan25 degrees ; Tai Po26 degrees ; Sha Tin26 degrees ; Tuen Mun25 degrees ; Tseung Kwan O25 degrees ; Sai Kung26 degrees ; Cheung Chau25 degrees ; Chek Lap Kok27 degrees ; Tsing Yi25 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley26 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan26 degrees ; Kowloon City26 degrees ; Wong Tai Sin26 degrees ; Stanley25 degrees ; Kwun Tong26 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park27 degrees ; Yuen Long Park26 degrees ; Tai Mei Tuk25 degrees . Between 5:45 and 6:45 p.m., the rainfall recorded in various regions were: Central & Western District1 to 3 mm; Kwai Tsing1 to 2 mm; Islands District0 to 5 mm; Sai Kung0 to 4 mm; Sham Shui Po0 to 2 mm; Southern District0 to 2 mm; Tsuen Wan0 to 2 mm; Sha Tin0 to 1 mm; Tai Po0 to 1 mm; Tuen Mun0 to 1 mm; Yuen Long0 to 1 mm.
20/09/2025
At 4 p.m. at the Hong Kong Observatory : Air temperature : 26 degrees Celsius Relative Humidity : 91 per cent During the past hour the mean UV Index recorded at King's Park : 0.7 Intensity of UV radiation : low Though rainstorm warning has been cancelled, people should stay alert to the danger that may be brought about by river flooding. Please be reminded that:The Thunderstorm Warning has been issued. It will remain effective until 6:00 p.m. today. A few squally thunderstorms are expected to occur over Lantau. The air temperatures at other places were: Hong Kong Observatory26 degrees ; King's Park26 degrees ; Wong Chuk Hang26 degrees ; Ta Kwu Ling27 degrees ; Lau Fau Shan26 degrees ; Tai Po27 degrees ; Sha Tin27 degrees ; Tuen Mun26 degrees ; Tseung Kwan O26 degrees ; Sai Kung26 degrees ; Cheung Chau25 degrees ; Chek Lap Kok27 degrees ; Tsing Yi25 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley26 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan26 degrees ; Kowloon City26 degrees ; Wong Tai Sin26 degrees ; Stanley25 degrees ; Kwun Tong26 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park26 degrees ; Yuen Long Park26 degrees ; Tai Mei Tuk26 degrees . Between 2:45 and 3:45 p.m., the rainfall recorded in various regions were: Sham Shui Po2 mm; Sai Kung1 to 5 mm; Central & Western District1 to 3 mm; Kwun Tong1 to 2 mm; Tai Po1 to 2 mm; Wan Chai1 to 2 mm; Wong Tai Sin1 to 2 mm; Eastern District1 mm; Kowloon City1 mm; Kwai Tsing1 mm; Tsuen Wan1 mm; Yau Tsim Mong1 mm; Islands District0 to 3 mm; Southern District0 to 3 mm; Sha Tin0 to 2 mm; North District0 to 1 mm; Tuen Mun0 to 1 mm; Yuen Long0 to 1 mm.
20/09/2025
At 1 p.m. at the Hong Kong Observatory : Air temperature : 26 degrees Celsius Relative Humidity : 93 per cent During the past hour the mean UV Index recorded at King's Park : 1 Intensity of UV radiation : low Tropical Cyclone Ragasa is expected to move towards the vicinity of Luzon Strait and intensify significantly in the next couple of days. It may edge closer to the coast of Guangdong with Super Typhoon intensity midweek next week. According to the present forecast, local weather will deteriorate gradually on Tuesday and Wednesday. Gale to storm force winds will prevail on Wednesday. The weather will be adverse with heavy squally showers and thunderstorms. Seas will be high with swells. Under the influence of significant storm surge, the sea level over coastal areas by then may be similar to that of Hato in 2017 and Mangkhut in 2018. Members of the public please take note of the latest weather information from the Observatory and be well prepared for high winds and flooding. Please be reminded that:The Amber Rainstorm Warning Signal has been issued.The Thunderstorm Warning has been issued. It will remain effective until 4:00 p.m. today. A few squally thunderstorms are expected to occur over Hong Kong. The air temperatures at other places were: Hong Kong Observatory26 degrees ; King's Park25 degrees ; Wong Chuk Hang25 degrees ; Ta Kwu Ling27 degrees ; Lau Fau Shan26 degrees ; Tai Po26 degrees ; Sha Tin26 degrees ; Tuen Mun26 degrees ; Tseung Kwan O25 degrees ; Sai Kung26 degrees ; Cheung Chau25 degrees ; Chek Lap Kok27 degrees ; Tsing Yi26 degrees ; Tsuen Wan Ho Koon25 degrees ; Tsuen Wan Shing Mun Valley26 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan25 degrees ; Kowloon City25 degrees ; Happy Valley26 degrees ; Wong Tai Sin26 degrees ; Stanley25 degrees ; Kwun Tong25 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park26 degrees ; Yuen Long Park26 degrees ; Tai Mei Tuk26 degrees . Between 11:45 a.m. and 12:45 p.m., lightning was detected over all regions. The rainfall recorded in various regions were: Yau Tsim Mong6 to 8 mm; Central & Western District5 to 16 mm; Kowloon City4 to 8 mm; Kwun Tong4 to 6 mm; Wan Chai4 to 6 mm; Wong Tai Sin4 to 5 mm; Eastern District3 to 6 mm; Southern District3 to 13 mm; Sai Kung2 to 7 mm; Sha Tin1 to 3 mm; Sham Shui Po1 to 3 mm; Tai Po0 to 4 mm; Tuen Mun0 to 2 mm; Yuen Long0 to 2 mm; Islands District0 to 15 mm; Kwai Tsing0 to 1 mm; North District0 to 1 mm. Here is the information on Tropical Depression Mitag at noon: Location: 23.5 degrees north, 113.8 degrees east.
20/09/2025
At 10 a.m. at the Hong Kong Observatory : Air temperature : 25 degrees Celsius Relative Humidity : 95 per cent During the past hour the mean UV Index recorded at King's Park : 0.3 Intensity of UV radiation : low Localised Heavy Rain Advisory: Rain is particularly heavy in Chek Lap Kok in Islands District. It may cause serious flooding. Residents who are likely to be affected are advised to take necessary precautions to avoid possible flood damage. Heavy rain of more than 70 millimetres of hourly rainfall has fallen or is expected to fall in the above regions. Please be reminded that:The Amber Rainstorm Warning Signal has been issued.The Thunderstorm Warning has been issued. It will remain effective until 2:00 p.m. today. A few squally thunderstorms are expected to occur over Hong Kong. The air temperatures at other places were: Hong Kong Observatory25 degrees ; King's Park25 degrees ; Wong Chuk Hang25 degrees ; Ta Kwu Ling25 degrees ; Lau Fau Shan25 degrees ; Tai Po25 degrees ; Sha Tin25 degrees ; Tuen Mun25 degrees ; Tseung Kwan O25 degrees ; Sai Kung25 degrees ; Cheung Chau26 degrees ; Chek Lap Kok25 degrees ; Tsing Yi25 degrees ; Tsuen Wan Ho Koon24 degrees ; Tsuen Wan Shing Mun Valley25 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan25 degrees ; Kowloon City25 degrees ; Wong Tai Sin25 degrees ; Stanley25 degrees ; Kwun Tong25 degrees ; Sham Shui Po25 degrees ; Kai Tak Runway Park25 degrees ; Yuen Long Park25 degrees ; Tai Mei Tuk25 degrees . Between 8:45 and 9:45 a.m., lightning was detected within Lantau, New Territories East, Hong Kong and Kowloon. The rainfall recorded in various regions were: Sai Kung9 to 37 mm; Central & Western District8 to 23 mm; Southern District7 to 20 mm; Sha Tin6 to 9 mm; Tsuen Wan4 to 28 mm; Wong Tai Sin23 to 37 mm; Yuen Long2 to 9 mm; Yau Tsim Mong18 to 34 mm; Kowloon City11 to 28 mm; Kwun Tong11 to 26 mm; Eastern District11 to 25 mm; Kwai Tsing10 to 18 mm; Sham Shui Po10 to 13 mm; Tai Po1 to 7 mm; Tuen Mun1 to 7 mm; North District1 to 5 mm; Wan Chai1 to 11 mm; Islands District0 to 94 mm. Here is the information on Tropical Depression Mitag at 11 a.m.: Location: 23.5 degrees north, 113.8 degrees east.
20/09/2025
At 7 a.m. at the Hong Kong Observatory : Air temperature : 26 degrees Celsius Relative Humidity : 92 per cent Please be reminded that:The Tropical Cyclone Signal No. 3 has been issued.The Amber Rainstorm Warning Signal has been issued.The Thunderstorm Warning has been issued. It will remain effective until 8:30 a.m. today. A few squally thunderstorms are expected to occur over Hong Kong. The air temperatures at other places were: Hong Kong Observatory26 degrees ; King's Park25 degrees ; Wong Chuk Hang25 degrees ; Ta Kwu Ling25 degrees ; Lau Fau Shan25 degrees ; Tai Po25 degrees ; Sha Tin25 degrees ; Tuen Mun25 degrees ; Tseung Kwan O25 degrees ; Sai Kung25 degrees ; Cheung Chau25 degrees ; Chek Lap Kok26 degrees ; Tsing Yi25 degrees ; Tsuen Wan Ho Koon24 degrees ; Tsuen Wan Shing Mun Valley25 degrees ; Hong Kong Park25 degrees ; Shau Kei Wan26 degrees ; Kowloon City25 degrees ; Happy Valley25 degrees ; Wong Tai Sin25 degrees ; Stanley25 degrees ; Kwun Tong25 degrees ; Sham Shui Po26 degrees ; Kai Tak Runway Park26 degrees ; Yuen Long Park25 degrees ; Tai Mei Tuk25 degrees . Between 5:45 and 6:45 a.m., lightning was detected within New Territories East, Hong Kong and Kowloon. The rainfall recorded in various regions were: Sha Tin3 to 4 mm; Yuen Long3 to 17 mm; North District3 to 16 mm; Kwun Tong2 to 4 mm; Wong Tai Sin2 to 3 mm; Sai Kung2 to 18 mm; Eastern District1 to 8 mm; Tuen Mun1 to 6 mm; Kowloon City1 to 2 mm; Kwai Tsing1 to 2 mm; Sham Shui Po1 to 2 mm; Yau Tsim Mong1 to 2 mm; Tai Po1 to 14 mm; Wan Chai1 mm; Tsuen Wan0 to 7 mm; Islands District0 to 6 mm; Southern District0 to 16 mm; Central & Western District0 to 1 mm. Here is the information on Tropical Depression Mitag at 7 a.m.: Location: 23.3 degrees north, 114.1 degrees east; Maximum sustained wind near its centre: 45 km/h.

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