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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 11:02 HKT 07/May/2018

At 11 a.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 81 per cent.
During the past hour the mean UV Index recorded at King's Park was 3. The intensity of UV radiation was moderate.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until noon today. Isolated thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 27 degrees;
Ta Kwu Ling 29 degrees;
Tai Po 27 degrees;
Sha Tin 29 degrees;
Tuen Mun 30 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 28 degrees;
Cheung Chau 29 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 27 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 27 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 27 degrees;
Kowloon City 29 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 29 degrees;
Stanley 28 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 28 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 27 degrees.

Between 9:45 and 10:45 a.m., lightning was detected within Lantau and New Territories West. The rainfall recorded in various regions were:

Tsuen Wan 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 7 May

Regional Weather in Hong Kong

Information on Tropical Cyclones

Hong Kong Climatology


MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 07/May/2018

N0 WARNING.

GENERAL SITUATION AT 062100 UTC:
TROUGH 24N 105E 25N 110E 27N 115E 30N 121E S 8KT.

MARINE FORECAST FOR 24 HOURS FROM 070100 UTC:

HONG KONG= S 4, OCNL 5. ISOL SHOWERS AND TS. SEA UP TO 2 M. TEMP 30-25 C. =
KWANGTUNG= S 4-5, OCNL 6 IN W. ISOL SHOWERS AND TS. SEA UP TO 2 M, UP TO 3 M IN W. =
TAIWAN STRAIT= S TO SW 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL SW 2 M. =
BASHI= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PRATAS= S 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= S TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
SCARBOROUGH= S 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= S 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
TONKIN= S 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. =
DANANG= S 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 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 09:30 HKT 07/May/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 07 May 2018

    Warnings:
    Strong winds in Shangchuan Dao.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South force 4, occasionally force 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Nan'ao, Shanwei and South of Hong Kong:
    South force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Shangchuan Dao:
    South force 4 to 5, occasionally force 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    Southerly winds of force 4 to 5, becoming easterly winds of force 6 to 7. Isolated showers and thunderstorms.

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

    Waglan Island Wind south-southwest force 5
      Visibility 40 Kilometres

    Shantou Wind south-southwest force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind south force 4

    Macau Wind south force 2
      Visibility 11 Kilometres in showers

    Xisha Wind south-southwest force 3
      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
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    Weather Forecast for Local Aviation

    Bulletin issued at 09:30 HKT 07/MAY/2018
    (Next update at 12:30 HKT 07/MAY/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. 
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  200/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  200/15-20                            27-31
   B.   2000 FT:  220/20-25                            23
   C.   5000 FT:  230/25                               18
   D.  10000 FT:  240/25                               10
   E.  18000 FT:  240/30                               MS4
   F.  24000 FT:  250/25                               MS14
   G.  30000 FT:  250/35                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      SUNNY INTERVALS. ISOLATED SHOWERS AND A FEW THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 3000 FT. 
      TEMPO FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS. TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD OFFSHORE. 
                      MOD TO SEV NEAR CUNIM/TS AND  NEAR HILLS.
   N. SEA STATE     : 2.0-2.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE SOUTHERLY WINDS. MAINLY CLOUDY.
     ISOLATED SHOWERS WITH A FEW THUNDERSTORMS.=

    ===================================================================
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 19:55 HKT on 06 May 18

    VHHK SIGMET 2 VALID 061155/061500 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1912 E11142 - N1930 E11130 - N2106 E11130 - N2106 E11212 - N2030 E11230 - N1936 E11218 - N1912 E11142 TOP FL400 MOV NE 15KT 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 07/May/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     31.0 C
Minimum Air Temperature                     25.4 C
Grass Minimum Temperature                   24.7 C
Relative Humidity                        63 - 93 Percent
Rainfall                                     1.0 mm 
Total rainfall since 1st January           121.2 mm
Against an average of                      389.8 mm

Other Stations                Min                  Max
King's Park                  24.6 C               30.5 C
Wong Chuk Hang               25.0 C               28.5 C
Ta Kwu Ling                  24.9 C               31.3 C
Tai Po                       24.2 C               30.5 C
Sha Tin                      24.6 C               30.8 C
Tuen Mun                     25.3 C               30.7 C
Tseung Kwan O                24.0 C               30.5 C
Sai Kung                     24.6 C               30.2 C
Cheung Chau                  24.6 C               31.5 C
Chek Lap Kok                 25.9 C               31.9 C
Tsing Yi                     25.4 C               30.3 C
Shek Kong                    25.4 C               31.2 C
Tsuen Wan Ho Koon            24.5 C               27.9 C
Tsuen Wan Shing Mun Valley   25.4 C               29.9 C
Hong Kong Park               24.8 C               30.9 C
Shau Kei Wan                 24.2 C               30.2 C
Kowloon City                 24.6 C               31.4 C
Happy Valley                 25.6 C               30.3 C
Wong Tai Sin                 24.7 C               30.5 C
Stanley                      24.7 C               29.1 C
Kwun Tong                    24.5 C               30.8 C
Sham Shui Po                 25.3 C               29.9 C
Kai Tak Runway Park          24.6 C               30.3 C
Yuen Long Park               25.2 C               32.1 C
Tai Mei Tuk               24.2 C               31.7 C

Duration of sunshine (King's Park):              7.8 H
The mean UV index recorded at King's Park yesterday was 5,
the UV intensity was Moderate.
The maximum UV index for yesterday was 11.
Sea surface temperature (Waglan Island):        24.5 C 

Yesterday's (06 May 2018) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 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                           0.08
Tap Mun                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.10
Kwun Tong                           0.11
Sai Wan Ho                          0.09
King's Park                         0.15
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 06 May
     2003copy right image | Important notices | Privacy policy Last revision date: <07 May 2018> 

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