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

Local Weather Forecast | Regional Temperature Forecast in HK
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Bulletin issued at 00:02 HKT 27/Aug/2018

At midnight at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 96 per cent.

Please be reminded that:

The Red Rainstorm Warning Signal has been issued.
The Thunderstorm Warning has been issued. It will remain effective until 2:00 a.m. today. A few thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 27 degrees;
Lau Fau Shan 27 degrees;
Tai Po 27 degrees;
Sha Tin 26 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 25 degrees;
Sai Kung 26 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 25 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 25 degrees;
Kowloon City 25 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 25 degrees;
Stanley 25 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 27 degrees.

Between 10:45 and 11:45 p.m., lightning was detected over all regions. The rainfall recorded in various regions were:

Southern District 27 to 73 mm;
Central & Western District 26 to 62 mm;
Wan Chai 32 to 52 mm;
Islands District 0 to 47 mm;
Eastern District 15 to 27 mm;
Kwai Tsing 15 to 25 mm;
Yau Tsim Mong 21 to 24 mm;
Kowloon City 19 to 22 mm;
Wong Tai Sin 1 to 21 mm;
Sham Shui Po 20 mm;
Sha Tin 0 to 19 mm;
Sai Kung 0 to 18 mm;
Tsuen Wan 0 to 15 mm;
Kwun Tong 9 to 14 mm;
Yuen Long 0 to 1 mm;
Tuen Mun 0 to 1 mm.


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


Climatological Information for 27 Aug

Regional Weather in Hong Kong

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Local Weather Forecast

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

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

Bulletin updated at 00:25 HKT 27/Aug/2018

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

A broad area of low pressure brought showers and thunderstorms to the coast of Guangdong and the northern part of the South China Sea yesterday. Locally, there were sunny intervals and also showers. Showers were heavy last night. More than 50 millimetres of rainfall were recorded at many places over the territory. An active southwesterly airstream is expected to affect the south China coast gradually today and tomorrow. There will be heavy showers and squally thunderstorms over the region midweek this week.

Weather forecast for Hong Kong (Monday, 27 Aug 2018)

Mainly cloudy with showers and a few thunderstorms. Showers will be heavy at first. Temperatures will range between 25 and 30 degrees. Light winds, becoming moderate southwesterlies later.

Outlook : Showers and squally thunderstorms in the following couple of days. Showers will be heavy at times.


(The above forecast period is valid up to 23:59 HKT tomorrow, 28/08/2018; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 26/Aug/2018

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

GENERAL SITUATION AT 260900 UTC:
A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 261300 UTC:

HONG KONG= W TO SW 4-5, 6 LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M, 3 M LATER. SWELL SW UP TO 2 M. TEMP 27-30 C. =
KWANGTUNG= W TO SW 6-7, UP TO 8 IN E LATER. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 3-4 M, UP TO 6 M LATER. SWELL SW 2-3 M. =
TAIWAN STRAIT= S TO SW 6-7, 8 LATER. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 3-4 M, 6 M LATER. SWELL SW 2-3 M. =
BASHI= S TO SW 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL S TO SW 3 M. =
PRATAS= SW 6-7, OCNL 8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL SW 2-3 M. =
BALINTANG= S TO SW 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL S TO SW 3 M. =
SCARBOROUGH= S TO SW 7-8. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 4-6 M. SWELL SW 3 M. =
PARACEL= SW 6-7, OCNL 8 IN E. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL SW 2-3 M. =
TONKIN= W TO SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL S 2 M. =
DANANG= W TO SW 5-6. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL SW 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.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 23:30 HKT 26/Aug/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 26 August 2018

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

    Weather Situation:
    A southwesterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    West to southwest force 4 to 5, becoming force 6 later.
    Isolated squally showers and thunderstorms, heavy at times.
    Moderate seas, becoming rough seas later.

    Nan'ao:
    Southwest force 6 to 7, becoming force 8 later.
    Isolated squally showers and thunderstorms.
    Rough seas, becoming very rough seas later.

    Shanwei:
    Southwest force 6 to 7.
    Isolated squally showers and thunderstorms.
    Rough seas.

    South of Hong Kong and Shangchuan Dao:
    West to southwest force 5 to 6.
    Isolated squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 6 to 7, up to force 8 in east. Scattered squally showers and thunderstorms.

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

    Shantou Wind south force 1
      Visibility 12 Kilometres

    Dongsha Wind southwest force 3
      Visibility 10 Kilometres

    Huangmaozhou Wind west-southwest force 4

    Macau Wind north-northeast force 3
      Visibility 15 Kilometres

    Xisha Wind west-southwest force 4
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 19:40 HKT 26/AUG/2018
    (Next update at 01:30 HKT 27/AUG/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1940 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  270/5-10
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  250/10                               32-27
   B.   2000 FT:  320/10-15                            23
   C.   5000 FT:  270/10                               19
   D.  10000 FT:  270/10                               11
   E.  18000 FT:  090/15                               MS3
   F.  24000 FT:  090/10                               MS12
   G.  30000 FT:  080/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY AND A FEW SHOWERS. ISOLATED
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT  SCT 8000 FT TEMPO FEW CB 800 FT
      SCT 1200 FT BKN 5000 FT
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS. TEMPO 2000 M IN TS
   L. 0 DEG. C LEVEL: 17500 FT      10 DEG. C LEVEL(S) : 10200 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE WEST TO SOUTHWESTERLY WINDS.  MAINLY
     CLOUDY WITH A FEW SHOWERS. ISOLATED
     THUNDERSTORMS LATER.=

    ===================================================================
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.

    The latest significant weather information
    issued by the Hong Kong Observatory at 22:16 HKT on 26 Aug 18

    VHHK SIGMET 3 VALID 261030/261430 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1642 E11400 - N1812 E11236 - N1918 E11530 - N2130 E11436 - N2136 E11730 - N2100 E11730 TOP FL480 STNR NC= VHHK SIGMET 4 VALID 261254/261600 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2148 E11418 - N2054 E11130 - N2130 E11130 - N2230 E11400 - N2148 E11418 TOP FL400 MOV S 10KT NC= VHHK SIGMET 5 VALID 261430/261830 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2100 E11730 - N1854 E11548 - N2024 E11130 - N2130 E11130 - N2348 E11706 - N2354 E11730 - N2100 E11730 TOP FL450 STNR NC=

    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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    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 27/Aug/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.4 C
Minimum Air Temperature                     25.5 C
Grass Minimum Temperature                   24.5 C
Relative Humidity                        61 - 96 Percent
Rainfall                                    80.2 mm 
Total rainfall since 1st January          1454.3 mm
Against an average of                     1857.7 mm

Other Stations                Min                  Max
King's Park                  25.0 C               32.1 C
Wong Chuk Hang               24.5 C               32.3 C
Ta Kwu Ling                  25.1 C               33.0 C
Lau Fau Shan                 26.4 C               31.8 C
Tai Po                       25.2 C               31.6 C
Sha Tin                      25.6 C               32.8 C
Tuen Mun                     26.4 C               32.9 C
Tseung Kwan O                24.8 C               32.5 C
Sai Kung                     26.3 C               31.5 C
Cheung Chau                  24.9 C               32.0 C
Chek Lap Kok                 26.0 C               33.0 C
Tsing Yi                     25.0 C               33.2 C
Shek Kong                    25.6 C               33.1 C
Tsuen Wan Ho Koon            24.8 C               30.7 C
Tsuen Wan Shing Mun Valley   25.1 C               33.8 C
Hong Kong Park               24.5 C               33.0 C
Shau Kei Wan                 24.5 C               32.1 C
Kowloon City                 24.8 C               32.8 C
Happy Valley                 24.9 C               33.7 C
Wong Tai Sin                 25.1 C               33.3 C
Stanley                      24.6 C               31.7 C
Kwun Tong                    24.7 C               33.1 C
Sham Shui Po                 24.8 C               32.9 C
Kai Tak Runway Park          24.8 C               32.1 C
Yuen Long Park               26.6 C               33.4 C
Tai Mei Tuk               26.1 C               32.2 C

Duration of sunshine (King's Park):              3.3 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 7.
 

Yesterday's (26 Aug 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.16 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                           0.13
Sai Wan Ho                          0.09
King's Park                         0.16
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

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 26 Aug
     2003copy right image | Important notices | Privacy policy Last revision date: <27 Aug 2018> 

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