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Bulletin issued at 00:02 HKT 19/Mar/2018

At midnight at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 90 per cent.

The air temperatures at other places were:

King's Park 21 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 20 degrees;
Lau Fau Shan 21 degrees;
Tai Po 20 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 20 degrees;
Sai Kung 20 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 23 degrees;
Tsing Yi 22 degrees;
Shek Kong 21 degrees;
Tsuen Wan Ho Koon 21 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 21 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 20 degrees;
Happy Valley 21 degrees;
Wong Tai Sin 21 degrees;
Stanley 20 degrees;
Kwun Tong 20 degrees;
Sham Shui Po 21 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 20 degrees.


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


Climatological Information for 19 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


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

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Bulletin updated at 00:00 HKT 19/Mar/2018

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

The easterly airstream affected the coast of Guangdong moderated gradually yesterday. Locally, it was mainly cloudy. There were sunny periods in the afternoon. The trough of low pressure over central China is expected to develop into a cold front gradually. The associated thundery showers will affect the coastal areas of Guangdong tonight and tomorrow. The northeast monsoon following the cold front will bring generally fine and appreciably cooler weather to the region in the middle and latter parts of this week.

Weather forecast for Hong Kong (Monday, 19 Mar 2018)

Mainly cloudy with rather low visibility. Sunny periods during the day with a few showers and thunderstorms later. Temperatures will range between 20 and 26 degrees. Light to moderate east to southeasterly winds.

Outlook : There will still be thundery showers on Tuesday and temperatures will fall appreciably. Fine with cool mornings in the middle and latter parts of this week.


(The above forecast period is valid up to 23:59 HKT today, 19/03/2018; 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 18/Mar/2018

N0 WARNING.

GENERAL SITUATION AT 180900 UTC:
TROUGH 26N 107E 25N 110E 27N 115E 30N 121E S SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 181300 UTC:

HONG KONG= E TO SE 4, OCNL 5. DOWN TO 1000 M IN MIST PATCHES. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS LATER. SEA UP TO 2 M. TEMP 20-26 C. =
KWANGTUNG= E TO SE 4-5. DOWN TO 1000 M IN MIST OR RAIN PATCHES. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS LATER. SEA UP TO 2 M. SWELL NE 2 M. =
TAIWAN STRAIT= SE 4-5. DOWN TO 1000 M IN MIST OR RAIN PATCHES. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS LATER. SEA UP TO 2 M. SWELL NE 2 M. =
BASHI= E TO SE 4-5. LGT RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
PRATAS= E TO SE 4-5. LGT RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
BALINTANG= E TO SE 4-5. LGT RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
SCARBOROUGH= E 4-5. FINE. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= SE 4-5. DOWN TO 1000 M IN MIST OR LGT RAIN PATCHES. SEA UP TO 2 M. SWELL NE 2 M. =
TONKIN= SE 4-5. DOWN TO 1000 M IN MIST PATCHES. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= SE 4-5. DOWN TO 1000 M IN MIST OR RAIN PATCHES. SEA UP TO 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.


  • Map showing the 10 forecast areas
  • Tidal Information

    • 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 18/Mar/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 18 March 2018

    Warnings:
    Fog in all areas.

    Weather Situation:
    An easterly airstream is affecting the south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to southeast force 4, occasionally force 5.
    Fog patches. Isolated squally showers and thunderstorms later.
    Moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East to southeast force 4 to 5.
    Fog patches. Isolated squally showers and thunderstorms later.
    Moderate seas.

    Outlook for the next 48 hours
    South to southeasterly winds of force 4 to 5, becoming northerly winds of force 6 to 7. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind north-northeast force 4
      Visibility 5000 Metres

    Shantou Wind east force 2
      Visibility 21 Kilometres

    Dongsha Wind east-northeast force 2
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 3

    Macau Wind south-southeast force 2
      Visibility 3500 Metres in mist

    Xisha Wind calm
      Visibility 19 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
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  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 18/MAR/2018
    (Next update at 01:30 HKT 19/MAR/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     FOG.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  100/10
       OFFSHORE:  080/15, OCNL 20                      24-20
   B.   2000 FT:  170/15-20                            18
   C.   5000 FT:  210/15                               16
   D.  10000 FT:  250/25                               7
   E.  18000 FT:  270/40                               MS7
   F.  24000 FT:  260/50                               MS19
   G.  30000 FT:  260/65                               MS33
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1400 - 2900 FT.
   I. WEATHER       : 
      MAINLY CLOUDY.  LOCALIZED FOG/MIST LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT  SCT 2500 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 3000 M IN MIST.
                      TEMPO 500 M IN FOG.
   L. 0 DEG. C LEVEL: 14000 FT      10 DEG. C LEVEL(S) : 9000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE EAST TO SOUTHEASTERLY WINDS.
     SUNNY PERIODS.  LOCALIZED FOG/MIST AT FIRST.=

    ===================================================================
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 22:05 HKT on 15 Mar 18

    VHHK SIGMET 1 VALID 151010/151410 VHHH- VHHK HONG KONG FIR SEV TURB FCST N OF N20 FL140/240 MOV E 05KT NC= VHHK SIGMET 2 VALID 151410/151810 VHHH- VHHK HONG KONG FIR SEV TURB FCST N OF N20 AND E OF E113 FL140/240 MOV E 05KT 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 19/Mar/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     24.1 C
Minimum Air Temperature                     19.2 C
Grass Minimum Temperature                   18.3 C
Relative Humidity                        75 - 91 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            89.4 mm
Against an average of                      113.9 mm

Other Stations                Min                  Max
King's Park                  18.6 C               23.9 C
Wong Chuk Hang               19.0 C               25.1 C
Ta Kwu Ling                  18.7 C               25.2 C
Lau Fau Shan                 17.9 C               26.2 C
Tai Po                       19.1 C               22.3 C
Sha Tin                      19.0 C               24.9 C
Tuen Mun                     19.1 C               24.4 C
Tseung Kwan O                18.1 C               22.1 C
Sai Kung                     18.7 C               22.0 C
Cheung Chau                  18.4 C               23.5 C
Chek Lap Kok                 19.7 C               27.3 C
Tsing Yi                     19.9 C               25.3 C
Shek Kong                    19.7 C               26.9 C
Tsuen Wan Ho Koon            18.6 C               25.0 C
Tsuen Wan Shing Mun Valley   19.4 C               25.7 C
Hong Kong Park               19.0 C               23.5 C
Shau Kei Wan                 18.1 C               22.0 C
Kowloon City                 18.7 C               24.5 C
Happy Valley                 19.1 C               25.5 C
Wong Tai Sin                 18.9 C               24.9 C
Stanley                      18.5 C               23.1 C
Kwun Tong                    18.2 C               23.6 C
Sham Shui Po                 19.5 C               25.3 C
Kai Tak Runway Park          19.0 C               22.3 C
Yuen Long Park               18.9 C               27.4 C
Tai Mei Tuk               18.4 C               24.9 C

Duration of sunshine (King's Park):              4.9 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        19.5 C 

Yesterday's (18 Mar 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                           0.08
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                        0.14

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 18 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <19 Mar 2018> 

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