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9-day Weather Forecast

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General Situation:

The easterly airstream now affecting the coast of Guangdong is moderating gradually. It will be brighter over the region today and tomorrow. A cold front is expected to reach the south China coast over the weekend. The associated intense winter monsoon will persist over the region next week, bringing cold, fine and dry weather to the region. Tropical Cyclone Kai-tak located over the seas east of the Philippines is expected to intensify gradually in the next couple of days. It will then move across the Philippines and the southern part of the South China Sea.

15 Dec
(FRI)
16 Dec
(SAT)
17 Dec
(SUN)
18 Dec
(MON)
19 Dec
(TUE)
20 Dec
(WED)
21 Dec
(THU)
22 Dec
(FRI)
23 Dec
(SAT)
SUNNY PERIODS
Sunny periods.
Cool
Sunny periods. Dry during the day. Temper-atures falling significantly.
Cold
Sunny periods and dry. Cold in the morning.
Cold
Mainly fine. Cold in the morning. Very dry during the day.
Cold
Fine. Cold in the morning. Very dry during the day.
Cold
Fine. Cold in the morning. Very dry during the day.
SUNNY
Fine. Rather cool in the morning. Very dry during the day.
SUNNY
Fine and dry. Cool in the morning.
SUNNY
Fine and dry. Cool in the morning.

Forecast: maximum temperature minimum temperature

50% of the days have maximum temperatures falling within this range (based on 30-year climate data)[note 1]
50% of the days have minimum temperatures falling within this range (based on 30-year climate data)[note 1]

Forecast: maximum relative humidity minimum relative humidity

50% of the days have maximum relative humidity falling within this range (based on 30-year climate data)[note 1]
50% of the days have minimum relative humidity falling within this range (based on 30-year climate data)[note 1]
East to northeast force 4, force 5 at first.
North force 5, force 6 offshore.
North force 4, occasionally force 5.
North force 4, force 5 later, occasionally force 6 offshore.
North to northeast force 4 to 5.
North to northeast force 4, occasionally force 5.
Northeast force 4.
Northeast force 4.
15 Dec
(FRI)
16 Dec
(SAT)
17 Dec
(SUN)
18 Dec
(MON)
19 Dec
(TUE)
20 Dec
(WED)
21 Dec
(THU)
22 Dec
(FRI)
23 Dec
(SAT)

Updated at: 11:30 HKT 14 Dec 2017


(Next update at: 16:30 HKT 14 Dec 2017)

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region
Climatological information for 15 Dec - 23 Dec

Sea surface temperature
7 a.m. on 14 Dec 2017 at North Point :
20 °C
Soil temperatures
7 a.m. on 14 Dec 2017 at the Hong Kong Observatory:
0.5m depth:22.4°C
1.0m depth:24.5°C

Note:
  1. This middle 50% range (between 25th and 75th percentiles) is calculated based on the maximum/minimum temperature and relative humidity data within a 5-day period centred on that day in the 30 years from 1981 to 2010.
  2. "9-day Weather Forecast" provides general indications of the trends in weather for the coming 9 days. For detailed description of today's weather forecast, please refer to "Local Weather Forecast".
  3. The accuracy of forecast generally decreases with forecast period. The average accuracy of weather forecast for the next one to three days, four to seven days, and eight to nine days are about 90%, 85% and 80% respectively.
  4. The accuracy of forecast also varies for different weather systems in different seasons. Generally speaking, weather in spring and summer such as fog, tropical cyclone and severe convective weather is more changeable, resulting in higher uncertainty of forecast.