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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

Local Weather Forecast | Regional Temperature Forecast in HK
9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 01:02 HKT 23/Dec/2018

At 1 a.m. at the Hong Kong Observatory the air temperature was 23 degrees Celsius and the relative humidity 80 per cent.

The air temperatures at other places were:

King's Park 22 degrees;
Wong Chuk Hang 23 degrees;
Ta Kwu Ling 22 degrees;
Lau Fau Shan 21 degrees;
Tai Po 21 degrees;
Sha Tin 22 degrees;
Tuen Mun 22 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 22 degrees;
Cheung Chau 21 degrees;
Chek Lap Kok 24 degrees;
Tsing Yi 23 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 22 degrees;
Hong Kong Park 22 degrees;
Shau Kei Wan 21 degrees;
Kowloon City 22 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 23 degrees;
Stanley 22 degrees;
Kwun Tong 22 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 21 degrees.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 23 Dec


Local Weather Forecast
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Local Weather Forecast

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 00:45 HKT 23/Dec/2018

Here is the latest weather bulletin issued by the Hong Kong Observatory.

A warm easterly airstream affected the coast of Guangdong yesterday. Locally, it was cloudy in the morning and at night, and sunny during the day. Temperatures over the territory generally rose to 25 degrees or above. Besides, pressure rose over the northern part of southern China last night. The northeast monsoon is expected to reach the coastal areas today. Temperatures will drop slightly and there will be a few rain patches over the region today and tomorrow.

Weather forecast for Hong Kong

Mainly cloudy with one or two rain patches. Temperatures will linger around 23 degrees with light winds at first. Becoming moderate to fresh north to northeasterly winds. It will become cooler with temperatures over the urban areas falling to about 19 degrees on Sunday night, and a couple of degrees lower in the New Territories.

Outlook : Cooler with light rain on Monday. The weather will be brighter over the Christmas holidays. Temperatures falling significantly in the latter part of this week.


(The above forecast period is valid up to 23:59 HKT today, 23/12/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)



MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 22/Dec/2018

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG AND PARACEL.

GENERAL SITUATION AT 220900 UTC:
THE NORTHEAST MONSOON IS EXPECTED TO AFFECT THE FORECAST AREAS LATER.

MARINE FORECAST FOR 24 HOURS FROM 221300 UTC:

HONG KONG= N TO NE 4-5, BEC 6-7. RAIN PATCHES. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA UP TO 2 M, BEC 3-4 M. SWELL NE 2 M. TEMP 22-19 C. =
KWANGTUNG= N TO NE 5-6, BEC 7-8. RAIN PATCHES. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M. =
TAIWAN STRAIT= NE 5-6, BEC 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M, 3 M LATER. =
BASHI= E TO NE 5-6, BEC 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M, 3 M LATER. =
PRATAS= NE 5-6, BEC 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M, 3 M LATER. =
BALINTANG= E TO NE 5-6, BEC 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M, 3 M LATER. =
SCARBOROUGH= NE 5-6, BEC 7. RAIN PATCHES. SEA 2-3 M, BEC 4 M. SWELL NE 2 M. =
PARACEL= NE 5-6, BEC 7-8. RAIN PATCHES. SEA 2-3 M, BEC 4-6 M. SWELL NE 2 M, 3 M LATER. =
TONKIN= N TO NE 5-6, BEC 7. RAIN PATCHES. DOWN TO 4000 M IN MIST PATCHES AT FIRST. SEA 2-3 M, BEC 4 M. =
DANANG= N TO NE 5-6, BEC 7. RAIN PATCHES. SEA 2-3 M, BEC 4 M. SWELL NE 2 M. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.



SOUTH CHINA COASTAL WATERS
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South China Coastal Waters

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9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

Bulletin issued at 23:30 HKT 22/Dec/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 22 December 2018

Warnings:
Gale force winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao. Strong winds in Hong Kong adjacent waters.

Weather Situation:
Pressure is rising over the northern part of southern China. The northeast monsoon is expected to reach the south China coastal waters on Sunday.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
North to northeast force 4 to 5, becoming force 6 to 7.
A few rain patches. Visibility relatively low in some areas at first.
Moderate seas, becoming rough.

Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
North to northeast force 5 to 6, becoming force 7 to 8.
Moderate to rough seas, becoming very rough.

Outlook for the next 48 hours
North to northeasterly winds of force 7 to 8, becoming easterly winds of force 6 to 7 later.

Latest reports from south China coastal weather stations
--------------------------------------------------------

Waglan Island Wind north-northeast force 4
  Visibility 8 Kilometres

Shantou Wind east-northeast force 2
  Visibility 13 Kilometres

Dongsha Wind northeast force 3
  Visibility 10 Kilometres

Huangmaozhou Wind east force 4

Xisha Wind northeast force 2
  Visibility 18 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 23/DEC/2018
(Next update at 9:00-9:30 HKT 23/DEC/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     PRESSURE IS RISING OVER THE NORTHERN PART OF
     SOUTHERN CHINA. THE NORTHEAST MONSOON IS
     EXPECTED TO REACH THE SOUTH CHINA COASTAL WATERS
     ON SUNDAY.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  070/5-10
                  360/10-15 LATER
       OFFSHORE:  070/10-15                            
   B.   2000 FT:  030/10
                  020/15-20 LATER                      17
   C.   5000 FT:  180/10                               14
   D.  10000 FT:  220/10                               10
   E.  18000 FT:  220/30                               MS6
   F.  24000 FT:  250/30                               MS16
   G.  30000 FT:  240/30                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2000-2600 FT
   I. WEATHER       : 
      MAINLY CLOUDY. A FEW RAIN PATCHES LATER.
      LOCALISED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT SCT 4500 FT.
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN RAIN/MIST.
   L. 0 DEG. C LEVEL: 15500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD OFFSHORE AND  NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTH TO NORTHEASTERLY WINDS.
     MAINLY CLOUDY WITH A FEW RAIN PATCHES. LOCALISED
     MIST.=
===================================================================
Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
===================================================================
Aviation Weather Observation and Forecast Information for Hong Kong International Airport
To know more about clouds, please see Commonly observed clouds in Hong Kong.


sigmet
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Significant Weather Information (SIGMET)

The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

There is no Significant Weather Information (SIGMET)

Please click here for more about the SIGMET


Tropical Cyclone Warning
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Tropical Cyclone Warning

There is no tropical cyclone warning signal.

For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.


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Last revision date: <06 Dec 2018> 

TROPICAL CYCLONE WARNING FOR SHIPPING
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Tropical Cyclone Warning for Shipping

There is no tropical cyclone warning for shipping*.




*Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.


YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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Yesterday's Weather and Radiation Level

Bulletin issued at 00:15 HKT 23/Dec/2018
HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     25.2 C
Minimum Air Temperature                     20.0 C
Grass Minimum Temperature                   17.8 C
Relative Humidity                        65 - 86 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2152.3 mm
Against an average of                     2386.7 mm

Other Stations                Min                  Max
King's Park                  19.0 C               26.1 C
Wong Chuk Hang               19.8 C               25.9 C
Ta Kwu Ling                  18.5 C               27.5 C
Lau Fau Shan                 17.5 C               25.2 C
Tai Po                       18.4 C               24.4 C
Sha Tin                      18.8 C               26.3 C
Tuen Mun                     18.9 C               27.2 C
Tseung Kwan O                18.6 C               26.3 C
Sai Kung                     19.3 C               24.0 C
Cheung Chau                  18.2 C               27.0 C
Chek Lap Kok                 20.3 C               26.1 C
Tsing Yi                     20.1 C               27.2 C
Shek Kong                    18.1 C               27.7 C
Tsuen Wan Ho Koon            17.6 C               26.6 C
Tsuen Wan Shing Mun Valley   19.3 C               28.0 C
Hong Kong Park               19.7 C               26.4 C
Shau Kei Wan                 19.1 C               25.7 C
Kowloon City                 18.8 C               27.8 C
Happy Valley                 19.9 C               27.2 C
Wong Tai Sin                 19.3 C               27.5 C
Stanley                      19.4 C               24.6 C
Kwun Tong                    19.0 C               26.3 C
Sham Shui Po                 19.2 C               27.6 C
Kai Tak Runway Park          19.9 C               25.7 C
Yuen Long Park               17.8 C               28.2 C
Tai Mei Tuk               18.6 C               26.9 C

Duration of sunshine (King's Park):              7.1 H
The mean UV index recorded at King's Park yesterday was 2,
the UV intensity was Low.
The maximum UV index for yesterday was 5.
 

Yesterday's (22 Dec 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.15 microsievert per hour.  These are within the normal
range of fluctuation of the background radiation level in
Hong Kong (see Note). The average dose rates measured at the
radiation monitoring stations over various parts of the
territory were as follows :

Station                     Yesterday's average
                            (microsievert/hour)
Ping Chau                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

Note
  1. From readings taken at various locations in Hong Kong in the past, the hourly mean ambient gamma radiation dose rate may vary between 0.06 and 0.3 microsievert per hour. (1 microsievert = 0.000001 sievert = 0.001 millisievert)
  2. Temporal variations are generally caused by changes in meteorological conditions such as rainfall, wind and barometric pressure.
  3. Spatial variations are generally caused by differences in the radioactive content of local rock and soil.
  4. The data displayed is provisional. Only limited data validation has been carried out.
Climatological Information for 22 Dec
Last revision date: <23 Dec 2018> 

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