Bulletin updated at 09:50 HKT 17/Aug/2025
9-Day Weather Forecast General Situation: The tropical cyclone over the central and northern parts of the South China Sea will move towards the vicinity of Hainan Island today. Under the combined effect of the tropical cyclone and the ridge of high pressure over southeastern China, it will be windy over the coast of southern China and the northern part of the South China Sea. There will be squally heavy showers and thunderstorms over the region today and in the next couple of days. With the tropical cyclone moving into the inland areas and weakening, showers will ease off gradually and weather will improve over the coast of Guangdong in the middle and latter parts of this week. Date/Month 17/8 (Sunday) Wind: East force 5, occasionally force 6 offshore. Up to force 7 on high ground. Weather: Mainly cloudy with occasional squally showers and thunderstorms. Showers will be heavier at times later. Seas will be rough with swells. Temp Range: 26 - 29 C R.H. Range: 75 - 95 Per Cent PSR: High Date/Month 18/8(Monday) Wind: East to southeast force 4 to 5, occasionally force 6 offshore and on high ground at first. Weather: Cloudy with squally showers and thunderstorms. Showers will be heavy at times. Seas will be rough with swells. Temp Range: 26 - 29 C R.H. Range: 80 - 95 Per Cent PSR: High Date/Month 19/8(Tuesday) Wind: South to southeast force 3 to 4, force 5 offshore at first. Weather: Mainly cloudy with occasional showers and a few squally thunderstorms. Showers will be heavier in some areas at first. Temp Range: 27 - 30 C R.H. Range: 80 - 95 Per Cent PSR: High Date/Month 20/8(Wednesday) Wind: South force 3. Weather: Mainly cloudy with a few showers. Isolated thunderstorms at first. Sunny intervals during the day. Temp Range: 27 - 31 C R.H. Range: 75 - 95 Per Cent PSR: Medium Low Date/Month 21/8(Thursday) Wind: South force 2 to 3. Weather: Sunny intervals and a few showers. Temp Range: 27 - 32 C R.H. Range: 75 - 95 Per Cent PSR: Medium Low Date/Month 22/8(Friday) Wind: South to southeast force 2 to 3. Weather: Sunny periods and isolated showers. Very hot during the day. Temp Range: 28 - 33 C R.H. Range: 65 - 90 Per Cent PSR: Low Date/Month 23/8(Saturday) Wind: Southeast force 3. Weather: Sunny intervals and a few showers. Temp Range: 27 - 32 C R.H. Range: 75 - 95 Per Cent PSR: Medium Low Date/Month 24/8(Sunday) Wind: East to southeast force 4, occasionally force 5. Weather: Mainly cloudy with a few showers and thunderstorms. Temp Range: 27 - 30 C R.H. Range: 80 - 95 Per Cent PSR: Medium Low Date/Month 25/8(Monday) Wind: East to southeast force 4, occasionally force 5. Weather: Mainly cloudy with a few showers and thunderstorms. Temp Range: 27 - 30 C R.H. Range: 80 - 95 Per Cent PSR: Medium Low Sea surface temperature at 7 a.m.17/8/2025 at North Point was 25 degrees C. Soil temperatures at 7 a.m.17/8/2025 at the Hong Kong Observatory: 0.5 M below surface was 29.4 degrees C. 1.0 M below surface was 29.6 degrees C. Weather Cartoons for 9-day weather forecast Day 1 cartoon no. 63 - Rain Day 2 cartoon no. 64 - Heavy Rain Day 3 cartoon no. 63 - Rain Day 4 cartoon no. 54 - Sunny Intervals with Showers Day 5 cartoon no. 54 - Sunny Intervals with Showers Day 6 cartoon no. 51 - SUNNY PERIODS Day 7 cartoon no. 54 - Sunny Intervals with Showers Day 8 cartoon no. 62 - Light Rain Day 9 cartoon no. 62 - Light Rain
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