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9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 00:02 HKT 25/Mar/2017

At midnight at the Hong Kong Observatory the air temperature was 21 degrees Celsius and the relative humidity 91 per cent.

The air temperatures at other places were:

King's Park 20 degrees;
Wong Chuk Hang 21 degrees;
Ta Kwu Ling 19 degrees;
Lau Fau Shan 20 degrees;
Tai Po 19 degrees;
Sha Tin 20 degrees;
Tuen Mun 21 degrees;
Tseung Kwan O 19 degrees;
Sai Kung 19 degrees;
Cheung Chau 20 degrees;
Chek Lap Kok 22 degrees;
Tsing Yi 22 degrees;
Shek Kong 20 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 21 degrees;
Sham Shui Po 22 degrees;
Kai Tak Runway Park 20 degrees;
Yuen Long Park 21 degrees;
Tai Mei Tuk 20 degrees.


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


Climatological Information for 25 Mar

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


Local Weather Forecast
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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 00:00 HKT 25/Mar/2017

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

An easterly airstream affected the south China coastal areas yesterday. Locally, it was mainly cloudy with coastal mist in the morning and at night. There were sunny intervals during the day. Besides, a cold front formed over the northern part of southern China yesterday, and moved southwards gradually. The cold front is expected to cross the south China coast later today. It will become cool significantly with rain over the region.

Weather forecast for Hong Kong (Saturday, 25 Mar 2017)

Mainly cloudy with relatively low visibility in some areas. The maximum temperature will be about 22 degrees during the day. Moderate easterly winds, becoming northerlies with a few rain patches. Temperatures will fall significantly to a minimum of around 16 degrees at night.

Outlook : Rather cool with occasional rain on Sunday. Fine and dry on Monday.


(The above forecast period is valid up to 23:59 HKT today, 25/03/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 24/Mar/2017

N0 WARNING.

GENERAL SITUATION AT 240900 UTC:
COLD FRONT 24N 106E 23N 110E 26N 116E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 241300 UTC:

HONG KONG= E 4-5, BEC N UP TO 6. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2 M, BEC 3 M. TEMP 22-16 C. =
KWANGTUNG= E 4-5, BEC N 6-7. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2 M, BEC 3-4 M. SWELL E UP TO 2 M. =
TAIWAN STRAIT= NE 4-5, BEC 6-7. RAIN PATCHES. SEA 2 M, BEC 3-4 M. SWELL NE UP TO 2 M. =
BASHI= E 5, N 6 LATER. RAIN PATCHES. SEA 2 M, 3 M LATER. SWELL NE UP TO 2 M. =
PRATAS= E 4-5, BEC N 6. CLD. RAIN PATCHES LATER. SEA 2 M, BEC 3 M. =
BALINTANG= E 5, OCNL 6 AT FIRST. RAIN PATCHES. SEA 2 M, UP TO 3 M AT FIRST. SWELL NE UP TO 2 M. =
SCARBOROUGH= NE 4-5. CLD. SEA UP TO 2 M. =
PARACEL= E 4-5, N UP TO 6 LATER. DOWN TO 4000 M IN MIST OR RAIN PATCHES IN N. SEA 2 M, UP TO 3 M LATER. =
TONKIN= E TO SE 4-5, BEC N 6-7. DOWN TO 4000 M IN MIST OR RAIN PATCHES. SEA 2 M, BEC 3-4 M. =
DANANG= E TO SE 4-5. DOWN TO 4000 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 24/Mar/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 24 March 2017

    Warnings:
    Strong winds in all areas.

    Weather Situation:
    A cold front over the northern part of Guangdong is moving southwards gradually. It is expected to cross the coastal waters later on Saturday.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 4 to 5, becoming north up to force 6.
    Mist patches and a few rain patches.
    Moderate seas, becoming rough.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East force 4 to 5, becoming north force 6 to 7.
    Moderate seas, becoming rough.

    Outlook for the next 48 hours
    North to northeasterly winds of force 6 to 7.

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

    Waglan Island Wind north-northeast force 3
      Visibility 3500 Metres

    Shantou Wind south-southeast force 1
      Visibility 26 Kilometres

    Dongsha Wind south-southeast force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind east-northeast force 4

    Macau Wind east-southeast force 2
      Visibility 6 Kilometres

    Xisha Wind east force 2
      Visibility 26 Kilometres

  • Explanation of Seas or Sea Waves
  • Explanation of Swells
  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
  • Map showing forecast areas
  • Tidal Information

    • WEATHER FORECAST FOR LOCAL AVIATION
    Traditional Chinese Simplified Chinese

    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 24/MAR/2017
    (Next update at 01:30 HKT 25/MAR/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
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:  090/10-15                            24-19
   B.   2000 FT:  160/10                               18
   C.   5000 FT:  230/10                               12
   D.  10000 FT:  270/20                               9
   E.  18000 FT:  260/20                               MS6
   F.  24000 FT:  270/30                               MS20
   G.  30000 FT:  270/60                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      1000-2400 FT
   I. WEATHER       : 
      MAINLY CLOUDY WITH ONE OR TWO LIGHT RAIN
      PATCHES. LOCALIZED MIST.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3500 FT
   K. VISIBILITY    : 9 KM. TEMPO 3000 M IN MIST/RAIN.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 6000, 7400, 7700 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 19 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHERLY WINDS. MAINLY CLOUDY WITH ONE
     OR TWO LIGHT RAIN PATCHES. LOCALIZED 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.

    The latest significant weather information
    issued by the Hong Kong Observatory at 21:28 HKT on 22 Mar 17

    VHHK SIGMET 1 VALID 220930/221330 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N2100 AND W OF E11530 FL160/200 MOV ENE 10KT WKN= VHHK SIGMET 2 VALID 221330/221730 VHHH- VHHK HONG KONG FIR SEV ICE FCST N OF N2100 AND E OF E11300 FL160/200 MOV ENE 10KT WKN=

    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 25/Mar/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.4 C
Minimum Air Temperature                     18.9 C
Grass Minimum Temperature                   19.7 C
Relative Humidity                        76 - 91 Percent
Rainfall                                      Trace 
Total rainfall since 1st January            52.5 mm
Against an average of                      132.3 mm

Other Stations                Min                  Max
King's Park                  18.4 C               22.4 C
Wong Chuk Hang               18.9 C               23.4 C
Ta Kwu Ling                  19.2 C               23.8 C
Lau Fau Shan                 19.7 C               27.9 C
Tai Po                       19.4 C               21.3 C
Sha Tin                      19.1 C               22.0 C
Tuen Mun                     20.0 C               23.1 C
Tseung Kwan O                17.9 C               20.5 C
Sai Kung                     18.6 C               21.0 C
Cheung Chau                  19.0 C               22.4 C
Chek Lap Kok                 20.3 C               25.9 C
Tsing Yi                     20.3 C               24.2 C
Shek Kong                    20.0 C               26.3 C
Tsuen Wan Ho Koon            19.3 C               25.4 C
Tsuen Wan Shing Mun Valley   19.9 C               24.7 C
Hong Kong Park               19.2 C               23.0 C
Shau Kei Wan                 17.9 C               20.3 C
Kowloon City                 18.6 C               22.8 C
Happy Valley                 19.1 C               23.7 C
Wong Tai Sin                 19.1 C               22.4 C
Stanley                      18.2 C               21.1 C
Kwun Tong                    18.1 C               21.0 C
Sham Shui Po                 19.8 C               23.9 C
Kai Tak Runway Park          18.8 C               21.6 C
Yuen Long Park               20.5 C               27.6 C
Tai Mei Tuk               18.6 C               22.0 C

Duration of sunshine (King's Park):              3.4 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):        18.3 C 

Yesterday's (24 Mar 2017) 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 during
the period 1987-2016, the background ambient gamma radiation
levels may vary between 0.06 and 0.30 microsievert per hour.

    2. The extent of health effects to a person as a result of
exposure to radiation is expressed by a physical quantity
called equivalent dose, in unit of sievert.  Protective
action may be required if there is an increase in the
ambient gamma dose rate above background such that the total
additional dose is expected to exceed 5000 microsieverts in
a relatively short period of time. For example, a dose of
5000 microsieverts may be reached when the ambient gamma
dose rate is 1000 microsieverts per hour (several thousand
times above background) and lasts for 5 hours.

    3. The readings of ambient gamma radiation level from
instrument are expressed in unit of gray, which is
numerically equal to the gamma dose expressed in sievert.
    Climatological Information for 24 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <25 Mar 2017> 

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