Bulletin updated at 11:30 HKT 17/Dec/2025
9-Day Weather Forecast General Situation: The northeast monsoon will affect southern China in the next few days. A broad band of clouds will cover the coast of Guangdong and the northern part of the South China Sea gradually in the next couple of days. There will be a few rain patches over the region. With the band of clouds thinning out, the weather will improve over the coastal areas during the weekend and it will be warm during the day. Replenishments of the northeast monsoon are expected to affect Guangdong early to midweek next week. It will be slightly cooler in the morning over the region. Date/Month 18/12 (Thursday) Wind: East to northeast force 4 to 5. Weather: Mainly fine. Dry during the day. Becoming cloudy with one or two light rain patches at night. Temp Range: 18 - 23 C R.H. Range: 55 - 85 Per Cent Date/Month 19/12(Friday) Wind: East to northeast force 4, occasionally force 5 at first. Weather: Mainly cloudy with a few rain patches. Temp Range: 19 - 22 C R.H. Range: 70 - 95 Per Cent Date/Month 20/12(Saturday) Wind: East to northeast force 3 to 4. Weather: Mainly cloudy. Warm with sunny periods during the day. Temp Range: 20 - 25 C R.H. Range: 65 - 85 Per Cent Date/Month 21/12(Sunday) Wind: North to northeast force 3 to 4. Weather: Mainly fine. Warm during the day. Temp Range: 20 - 25 C R.H. Range: 60 - 85 Per Cent Date/Month 22/12(Monday) Wind: East to northeast force 4 to 5. Weather: Sunny periods. Temp Range: 18 - 22 C R.H. Range: 60 - 80 Per Cent Date/Month 23/12(Tuesday) Wind: East to northeast force 4, force 5 at first. Weather: Mainly cloudy. Sunny intervals during the day. Temp Range: 19 - 23 C R.H. Range: 60 - 85 Per Cent Date/Month 24/12(Wednesday) Wind: Northeast force 4. Weather: Sunny periods. Dry during the day. Temp Range: 19 - 24 C R.H. Range: 55 - 75 Per Cent Date/Month 25/12(Thursday) Wind: North to northeast force 4, occasionally force 5. Weather: Sunny intervals. Cool in the morning and at night. Dry during the day. Temp Range: 17 - 21 C R.H. Range: 55 - 75 Per Cent Date/Month 26/12(Friday) Wind: North to northeast force 4, occasionally force 5. Weather: Sunny periods. Cool in the morning and at night. Dry during the day. Temp Range: 16 - 21 C R.H. Range: 45 - 75 Per Cent Sea surface temperature at 7 a.m.17/12/2025 at North Point was 21 degrees C. Soil temperatures at 7 a.m.17/12/2025 at the Hong Kong Observatory: 0.5 M below surface was 22.8 degrees C. 1.0 M below surface was 24.6 degrees C. Weather Cartoons for 9-day weather forecast Day 1 cartoon no. 51 - SUNNY PERIODS Day 2 cartoon no. 62 - Light Rain Day 3 cartoon no. 51 - SUNNY PERIODS Day 4 cartoon no. 51 - SUNNY PERIODS Day 5 cartoon no. 51 - SUNNY PERIODS Day 6 cartoon no. 52 - SUNNY INTERVALS Day 7 cartoon no. 51 - SUNNY PERIODS Day 8 cartoon no. 52 - SUNNY INTERVALS Day 9 cartoon no. 51 - SUNNY PERIODS
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