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Bulletin issued at 15:02 HKT 29/Apr/2018

At 3 p.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 75 per cent.
During the past hour the mean UV Index recorded at King's Park was 5. The intensity of UV radiation was moderate.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 27 degrees;
Tai Po 27 degrees;
Sha Tin 27 degrees;
Tuen Mun 28 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 27 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 28 degrees;
Tsing Yi 29 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 28 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 28 degrees;
Shau Kei Wan 26 degrees;
Kowloon City 29 degrees;
Happy Valley 28 degrees;
Wong Tai Sin 28 degrees;
Stanley 28 degrees;
Kwun Tong 28 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 28 degrees;
Tai Mei Tuk 28 degrees.


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


Climatological Information for 29 Apr

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 14:45 HKT 29/Apr/2018

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

The weather is generally fine over the coast of Guangdong. Meanwhile, a broad band of clouds is covering the inland areas.

Weather forecast for this afternoon and tonight

Hot with sunny periods in the afternoon. Mainly cloudy with one or two showers tonight. Moderate east to southeasterly winds.

Outlook : Hot with sunny periods in the next couple of days. A few showers on Thursday.


(The above forecast period is valid up to 23:59 HKT today, 29/04/2018; 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 09:00 HKT 29/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 282100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 290100 UTC:

HONG KONG= E TO SE 4-5. A FEW SHOWERS. DOWN TO 2000 M IN MIST PATCHES. SEA UP TO 2 M. TEMP 29-25 C. =
KWANGTUNG= E TO SE 4-5. DOWN TO 2000 M IN MIST PATCHES. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E UP TO 2 M. =
TAIWAN STRAIT= E TO SE 4-5. DOWN TO 2000 M IN MIST OR RAIN PATCHES. SEA UP TO 2 M. SWELL NE UP TO 2 M. =
BASHI= E 5. ISOL SHOWERS. SEA 2 M. SWELL E TO NE 2 M. =
PRATAS= E TO SE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL E UP TO 2 M. =
BALINTANG= E TO SE 5. ISOL SHOWERS AND TS. SEA 2 M. SWELL E TO NE 2 M. =
SCARBOROUGH= E TO SE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. SWELL E TO NE 2 M. =
PARACEL= E TO SE 4-5. ISOL SHOWERS AND TS. DOWN TO 1000 M IN MIST PATCHES IN N. SEA UP TO 2 M. SWELL E UP TO 2 M. =
TONKIN= E TO SE 4-5. DOWN TO 1000 M IN MIST PATCHES. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO SE 4-5. DOWN TO 1000 M IN MIST PATCHES. ISOL SHOWERS AND TS. 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
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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 12:30 HKT 29/Apr/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 29 April 2018

    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 to 5.
    A few showers. Mist patches.
    Moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    East to southeast force 4 to 5.
    Moderate seas.

    Outlook for the next 48 hours
    Southeasterly winds of force 4 to 5.

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

    Waglan Island Wind east-northeast force 3
      Visibility 11 Kilometres

    Shantou Wind south force 1
      Visibility 10 Kilometres

    Huangmaozhou Wind east force 4

    Macau Wind east force 2
      Visibility 7 Kilometres

    Xisha Wind east-southeast force 2
      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 12:30 HKT 29/APR/2018
    (Next update at 17:30 HKT 29/APR/2018)
    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. MEANWHILE, A BROAD BAND OF
     CLOUDS IS COVERING THE INLAND AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  110/10
       OFFSHORE:  090/10-15                            30-26
   B.   2000 FT:  140/15                               20
   C.   5000 FT:  170/10                               16
   D.  10000 FT:  230/15                               10
   E.  18000 FT:  240/20                               MS4
   F.  24000 FT:  240/25                               MS13
   G.  30000 FT:  260/35                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      3800-4200 FT
   I. WEATHER       : 
      SUNNY PERIODS AND ISOLATED SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3500 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16000 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    : 23 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EAST TO SOUTHEASTERLY WINDS.  
     MAINLY CLOUDY WITH ISOLATED SHOWERS. 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 17:47 HKT on 26 Apr 18

    VHHK SIGMET 2 VALID 260555/260955 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1948 E11254 - N1906 E11148 - N1930 E11130 - N2130 E11130 - N2212 E11312 - N1948 E11254 TOP FL380 MOV ENE 10KT NC= VHHK SIGMET 3 VALID 260955/261355 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1954 E11242 - N1918 E11142 - N1930 E11130 - N2130 E11130 - N2206 E11306 - N2212 E11324 - N1954 E11242 TOP FL380 MOV ENE 10KT 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 29/Apr/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.4 C
Minimum Air Temperature                     23.1 C
Grass Minimum Temperature                   22.6 C
Relative Humidity                        75 - 90 Percent
Rainfall                                     0.1 mm 
Total rainfall since 1st January           117.5 mm
Against an average of                      323.7 mm

Other Stations                Min                  Max
King's Park                  22.7 C               26.5 C
Wong Chuk Hang               22.8 C               26.3 C
Ta Kwu Ling                  23.1 C               27.4 C
Lau Fau Shan                 22.7 C               28.5 C
Tai Po                       23.1 C               25.2 C
Sha Tin                      22.9 C               26.8 C
Tuen Mun                     22.9 C               27.6 C
Tseung Kwan O                22.1 C               25.7 C
Sai Kung                     22.7 C               25.4 C
Cheung Chau                  22.8 C               27.3 C
Chek Lap Kok                 23.4 C               29.3 C
Tsing Yi                     23.6 C               27.1 C
Shek Kong                    23.3 C               28.1 C
Tsuen Wan Ho Koon            22.1 C               26.6 C
Tsuen Wan Shing Mun Valley   23.0 C               26.9 C
Hong Kong Park               22.7 C               25.7 C
Shau Kei Wan                 22.3 C               25.1 C
Kowloon City                 22.5 C               27.2 C
Happy Valley                 23.0 C               26.1 C
Wong Tai Sin                 22.5 C               26.3 C
Stanley                      22.2 C               25.9 C
Kwun Tong                    22.3 C               25.8 C
Sham Shui Po                 23.2 C               27.2 C
Kai Tak Runway Park          23.0 C               25.8 C
Yuen Long Park               23.6 C               28.3 C
Tai Mei Tuk               22.7 C               25.6 C

Duration of sunshine (King's Park):              0.7 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.
Sea surface temperature (Waglan Island):        23.4 C 

Yesterday's (28 Apr 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                             0.09
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                         0.15
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 28 Apr
     2003copy right image | Important notices | Privacy policy Last revision date: <29 Apr 2018> 

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