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Bulletin updated at 17:45 HKT 27/May/2018

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

An anticyclone aloft is covering the coast of southeastern China. Meanwhile, a southwesterly airstream is bringing showers to the coast of western Guangdong. Locally, temperatures over most parts of the territory rose to 33 degrees or above in the afternoon.

Weather forecast for tonight and tomorrow

Isolated showers. Mainly cloudy overnight. The minimum temperature will be about 28 degrees tomorrow morning. Very hot with sunny periods during the day with a maximum temperature of about 33 degrees. Moderate southwesterly winds.

Outlook : Very hot weather will persist and there will be isolated showers in the following few days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 28/05/2018; 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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Weather Information for the Marine Community

Bulletin issued at 09:00 HKT 27/May/2018

N0 WARNING.

GENERAL SITUATION AT 262100 UTC:
TROUGH 21N 105E 25N 115E 27N 125E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 270100 UTC:

HONG KONG= SW 4-5. ISOL SHOWERS. SEA UP TO 2 M. TEMP 34-28 C. =
KWANGTUNG= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TAIWAN STRAIT= SW 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL S UP TO 2 M. =
BASHI= W 5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. =
PRATAS= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= W 5, OCNL 6. ISOL SHOWERS. SEA UP TO 3 M. =
SCARBOROUGH= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= S TO SW 4-5, OCNL 6, BEC N 4-5. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
DANANG= S TO SW 4-5. 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.


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    • SOUTH CHINA COASTAL WATERS
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    Bulletin issued at 16:30 HKT 27/May/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 27 May 2018

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    Southwest force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Nan'ao and Shanwei:
    Southwest force 4 to 5.
    Moderate seas.

    South of Hong Kong and Shangchuan Dao:
    Southwest force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Southwesterly winds of force 4 to 5. Isolated showers and thunderstorms.

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

    Waglan Island Wind southwest force 5
      Visibility 38 Kilometres

    Shantou Wind southeast force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind west force 4

    Macau Wind southwest force 2
      Visibility 22 Kilometres

    Xisha Wind southwest force 1
      Visibility 30 Kilometres

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    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/May/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     34.7 C
Minimum Air Temperature                     28.8 C
Grass Minimum Temperature                   27.2 C
Relative Humidity                        55 - 82 Percent
Rainfall                                     0.9 mm 
Total rainfall since 1st January           171.6 mm
Against an average of                      570.3 mm

Other Stations                Min                  Max
King's Park                  27.8 C               33.8 C
Wong Chuk Hang               27.1 C               32.5 C
Ta Kwu Ling                  25.2 C               35.8 C
Lau Fau Shan                 25.8 C               35.1 C
Tai Po                       28.0 C               34.2 C
Sha Tin                      28.7 C               34.1 C
Tuen Mun                     26.8 C               34.5 C
Tseung Kwan O                25.9 C               34.8 C
Sai Kung                     27.1 C               35.2 C
Cheung Chau                  27.7 C               35.4 C
Chek Lap Kok                 29.3 C               35.4 C
Tsing Yi                     27.8 C               33.8 C
Shek Kong                    26.3 C               34.8 C
Tsuen Wan Ho Koon            26.5 C               32.4 C
Tsuen Wan Shing Mun Valley   27.7 C               32.3 C
Hong Kong Park               28.1 C               33.4 C
Shau Kei Wan                 26.8 C               33.9 C
Kowloon City                 27.5 C               34.5 C
Happy Valley                 28.0 C               34.9 C
Wong Tai Sin                 28.1 C               34.2 C
Stanley                      26.5 C               31.6 C
Kwun Tong                    27.6 C               34.4 C
Sham Shui Po                 28.2 C               32.8 C
Kai Tak Runway Park          27.7 C               34.1 C
Yuen Long Park               26.0 C               35.2 C
Tai Mei Tuk               27.8 C               34.4 C

Duration of sunshine (King's Park):              10.9 H
The mean UV index recorded at King's Park yesterday was 6,
the UV intensity was High.
The maximum UV index for yesterday was 11.
Sea surface temperature (Waglan Island):        26.9 C 

Yesterday's (26 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                           0.09
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.08
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 26 May
     2003copy right image | Important notices | Privacy policy Last revision date: <27 May 2018> 

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