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Bulletin issued at 12:02 HKT 01/Jun/2018

At noon at the Hong Kong Observatory the air temperature was 33 degrees Celsius and the relative humidity 63 per cent.
During the past hour the mean UV Index recorded at King's Park was 9. The intensity of UV radiation was very high.

Please be reminded that:

The Very Hot Weather Warning is now in force. Very hot weather might cause adverse health effects. Members of the public should take care to avoid heatstroke.

The air temperatures at other places were:

King's Park 34 degrees;
Lau Fau Shan 32 degrees;
Tai Po 32 degrees;
Sha Tin 34 degrees;
Tuen Mun 35 degrees;
Tseung Kwan O 33 degrees;
Sai Kung 32 degrees;
Cheung Chau 33 degrees;
Chek Lap Kok 34 degrees;
Tsing Yi 34 degrees;
Hong Kong Park 31 degrees;
Shau Kei Wan 33 degrees;
Kowloon City 34 degrees;
Kwun Tong 33 degrees.

No rainfall was recorded at the Hong Kong Observatory between midnight last night and midday today. 57.5 mm of rainfall have been recorded at the Hong Kong Observatory in May this year. The accumulated rainfall since 1st January up to the end of May this year was 175.0 mm compared with the normal of 640.8 mm for the same period.


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


Climatological Information for 1 Jun

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 11:45 HKT 01/Jun/2018

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

An easterly airstream is affecting the coast of eastern Guangdong.

Weather forecast for this afternoon and tonight

Mainly fine and very hot at first. Becoming cloudy with a few showers. Light winds, becoming moderate to fresh easterly winds.

Outlook : Becoming cloudier during the weekend and early next week with temperatures dropping slightly. Showery midweek next week.


(The above forecast period is valid up to 23:59 HKT today, 01/06/2018; 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 01/Jun/2018

GALE WARNING AREA: TAIWAN STRAIT.

GENERAL SITUATION AT 312100 UTC:
AN EASTERLY AIRSTREAM IS EXPECTED TO AFFECT THE FORECAST AREAS LATER.

MARINE FORECAST FOR 24 HOURS FROM 010100 UTC:

HONG KONG= SW 4-5, BEC E 5-6. ISOL SHOWERS AND TS. SEA UP TO 3 M. TEMP 34-27 C. =
KWANGTUNG= SW 4-5, BEC E 5-6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 6-7, OCNL 8. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 6 M. SWELL NE UP TO 3 M. =
BASHI= S 4-5, BEC E TO NE 6-7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL NE UP TO 2 M. =
PRATAS= S 4-5, BEC E TO NE 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
BALINTANG= S TO SE 4-5, BEC E TO NE 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL NE UP TO 2 M. =
SCARBOROUGH= S TO SE 4-5, BEC NE 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= S 4-5, BEC E 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= S 4-5, BEC E 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= S 4-5, BEC E 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.


  • 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 12:30 HKT 01/Jun/2018

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 12:30 p.m. on 01 June 2018

    Warnings:
    Strong winds in Hong Kong adjacent waters, Nan'ao, Shanwei and south of Hong Kong.

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

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Nan'ao, Shanwei and South of Hong Kong:
    East force 5 to 6.
    Isolated showers and thunderstorms.
    Moderate to rough seas.

    Shangchuan Dao:
    Southwest force 4 to 5, becoming east force 4 to 5.
    Isolated showers and thunderstorms.
    Moderate seas.

    Outlook for the next 48 hours
    Easterly winds of force 5 to 6. Isolated showers and thunderstorms.

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

    Waglan Island Wind south force 1

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Huangmaozhou Wind northwest force 1

    Macau Wind east force 2
      Visibility 27 Kilometres

    Xisha Wind north-northeast force 2
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 12:30 HKT 01/JUN/2018
    (Next update at 17:30 HKT 01/JUN/2018)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE COAST OF
     EASTERN GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1300 TO 2300 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  090/5-10
                  BECMG 090/10-15
                  TEMPO VRB/15G25 IN TS
       OFFSHORE:  060/10
                  BECMG 090/15-20                      35-28
   B.   2000 FT:  160/10
                  BECMG 090/15-20                      25
   C.   5000 FT:  100/10                               20
   D.  10000 FT:  180/5                                12
   E.  18000 FT:  300/5                                MS3
   F.  24000 FT:  010/10                               MS12
   G.  30000 FT:  010/10                               MS24
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      BECOMING CLOUDY.  A FEW SHOWERS  AND ISOLATED
      THUNDERSTORMS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT TEMPO FEW 800 CB SCT 1200 FT BKN
      5000 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) : 11800 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.  MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 0.5-2.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EASTERLY WINDS.  CLOUDY WITH A
     FEW SHOWERS AND ISOLATED  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 09:36 HKT on 28 May 18

    VHHK SIGMET 1 VALID 280145/280545 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2142 E11730 - N2006 E11324 - N2130 E11324 - N2254 E11730 - N2142 E11730 TOP FL400 MOV E 15KT WKN= VHHK SIGMET 4 VALID 272145/280145 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2142 E11642 - N2100 E11300 - N2148 E11300 - N2254 E11642 - N2142 E11642 TOP FL300 MOV ENE 15KT 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 01/Jun/2018 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     34.8 C
Minimum Air Temperature                     28.9 C
Grass Minimum Temperature                   27.6 C
Relative Humidity                        53 - 84 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January           175.0 mm
Against an average of                      640.8 mm

Other Stations                Min                  Max
King's Park                  28.2 C               34.5 C
Wong Chuk Hang               27.6 C               33.3 C
Ta Kwu Ling                  26.2 C               37.5 C
Lau Fau Shan                 28.0 C               35.9 C
Tai Po                       27.9 C               37.8 C
Sha Tin                      28.3 C               35.7 C
Tuen Mun                     28.3 C               35.9 C
Tseung Kwan O                27.2 C               36.4 C
Sai Kung                     27.8 C               35.0 C
Cheung Chau                  27.3 C               35.1 C
Chek Lap Kok                 29.6 C               36.2 C
Tsing Yi                     28.3 C               34.4 C
Shek Kong                    28.0 C               37.0 C
Tsuen Wan Ho Koon            26.5 C               33.9 C
Tsuen Wan Shing Mun Valley   28.0 C               34.3 C
Hong Kong Park               28.4 C               34.5 C
Shau Kei Wan                 28.3 C               35.6 C
Kowloon City                 28.3 C               35.9 C
Happy Valley                 28.3 C               35.3 C
Wong Tai Sin                 28.4 C               34.7 C
Stanley                      27.8 C               31.8 C
Kwun Tong                    28.6 C               35.7 C
Sham Shui Po                 28.2 C               33.9 C
Kai Tak Runway Park          28.4 C               35.3 C
Tai Mei Tuk               28.1 C               37.4 C

Duration of sunshine (King's Park):              11.9 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):        25.9 C 

Yesterday's (31 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 31 May
     2003copy right image | Important notices | Privacy policy Last revision date: <01 Jun 2018> 

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