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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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

Bulletin issued at 04:02 HKT 16/May/2017

At 4 a.m. at the Hong Kong Observatory the air temperature was 26 degrees Celsius and the relative humidity 91 per cent.

The band of thundery showers associated with a trough of low pressure is crossing the vicinity of Pearl River Estuary and may affect Hong Kong in the next couple of hours. Members of the public should be on the alert.

Please be reminded that:

The Thunderstorm Warning has been issued. It will remain effective until 5:45 a.m. today. A few thunderstorms are expected to occur over Hong Kong.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 24 degrees;
Lau Fau Shan 24 degrees;
Tai Po 24 degrees;
Sha Tin 25 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 24 degrees;
Sai Kung 25 degrees;
Cheung Chau 25 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 25 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 25 degrees;
Kowloon City 25 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 25 degrees;
Stanley 25 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 24 degrees.

Between 2:45 and 3:45 a.m., the rainfall recorded in various regions were:

Sai Kung 0 to 12 mm;
Yuen Long 0 to 9 mm;
North District 1 to 8 mm;
Sha Tin 0 to 7 mm;
Tai Po 0 to 7 mm;
Eastern District 0 to 6 mm;
Tuen Mun 0 to 2 mm;
Southern District 0 to 2 mm;
Sham Shui Po 0 to 2 mm.


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


Climatological Information for 16 May

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 03:45 HKT 16/May/2017

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

The band of thundery showers associated with a trough of low pressure is affecting the vicinity of Pearl River Estuary. Locally, more than 10 millimetres of rainfall were recorded at Sai Kung this morning.

Weather forecast for today

Cloudy with showers and a few thunderstorms. Showers will be heavy at times at first. The minimum temperature will be about 23 degrees. Showers will ease off gradually with sunny intervals during the day. The maximum temperature will be around 28 degrees. Light winds, becoming moderate northeasterly winds.

Outlook : Sunny periods in the following couple of days.


(The above forecast period is valid up to 23:59 HKT today, 16/05/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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Marine Weather Information and Forecast

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MARINE FORECAST
Traditional Chinese Simplified Chinese

Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 15/May/2017

N0 WARNING.

GENERAL SITUATION AT 150900 UTC:
TROUGH 21N 111E 22N 115E 23N 120E S 10KT.

MARINE FORECAST FOR 24 HOURS FROM 151300 UTC:

HONG KONG= S 3-4, BEC NE 4-5. DOWN TO 2000 M IN SCT HEAVY SHOWERS AND TS. SEA UP TO 2 M LATER. TEMP 23-28 C. =
KWANGTUNG= S TO SW 4-5, BEC NE 5-6. DOWN TO 2000 M IN SCT SQUALLY HEAVY SHOWERS AND TS. SEA UP TO 3 M. =
TAIWAN STRAIT= NE 4-5, OCNL 6. DOWN TO 2000 M IN SCT SQUALLY HEAVY SHOWERS AND TS. SEA UP TO 3 M LATER. =
BASHI= SE 4-5, BEC SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PRATAS= SE 4-5, BEC SW 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
BALINTANG= SE 4-5, BEC SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
SCARBOROUGH= S TO SE 4-5, BEC SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5, BEC SW 4-5. DOWN TO 2000 M IN SCT SQUALLY HEAVY SHOWERS AND TS IN N. SEA UP TO 2 M. =
TONKIN= S TO SE 4-5, BEC NE 4-5. DOWN TO 2000 M IN SCT SQUALLY HEAVY SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= S TO SE 4-5, BEC 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.


  • 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 03:30 HKT 16/May/2017

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 16 May 2017

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

    Weather Situation:
    A trough of low pressure is bringing showers and thunderstorms to the coastal waters of Guangdong.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    South force 3 to 4, becoming northeast force 4 to 5.
    Scattered heavy showers and thunderstorms.
    Moderate seas.

    Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
    South to southwest force 4 to 5, becoming northeast force 5 to 6.
    Scattered heavy squally showers and thunderstorms.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 4 to 5, occasionally force 6. Isolated squally showers and thunderstorms.

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

    Waglan Island Wind southwest force 4
      Visibility 26 Kilometres

    Shantou Wind southeast force 1
      Visibility 1500 Metres

    Dongsha Wind southeast force 1
      Visibility 8 Kilometres in thunderstorms

    Huangmaozhou Wind south-southwest force 3

    Macau Wind southwest force 1
      Visibility 30 Kilometres

    Xisha Wind south force 3
      Visibility 30 Kilometres

  • Explanation of Seas or Sea Waves
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  • 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 01:30 HKT 16/MAY/2017
    (Next update at 9:00-9:30 HKT 16/MAY/2017)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A TROUGH OF LOW PRESSURE IS BRINGING SHOWERS AND 
     THUNDERSTORMS TO THE COASTAL WATERS OF GUANGDONG.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  200/5-10
                  BEC 030/10
                  TEMPO VRB/20G30 IN TS
       OFFSHORE:  200/10-15
                  BEC 030/10-15                        23-29
   B.   2000 FT:  200/10-15
                  BEC 030/10-15                        21
   C.   5000 FT:  220/10-15
                  BEC 030/10-15                        17
   D.  10000 FT:  280/25                               10
   E.  18000 FT:  280/30                               MS2
   F.  24000 FT:  260/35                               MS13
   G.  30000 FT:  260/40                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH OCCASIONAL HEAVY SHOWERS AND SQUALLY
      THUNDERSTORMS. SHOWERS WILL EASE OFF GRADUALLY DURING
      THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1000 FT  SCT 2000 FT  BKN 8000 FT.  
      TEMPO FEW CB 800 FT  SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 7 KM. TEMPO 3000 M IN SHOWERS.  
                      TEMPO 1500 M IN TS.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS. 
                      MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS. SUNNY INTERVALS.=

    ===================================================================
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 03:00 HKT on 16 May 17

    VHHK SIGMET 5 VALID 151505/151905 VHHH- VHHK HONG KONG FIR EMBD TS FCST N OF LINE N1900 E11548 - N1800 E11248 TOP FL420 MOV E 10KT NC= VHHK SIGMET 6 VALID 151905/152305 VHHH- VHHK HONG KONG FIR EMBD TS FCST N OF N1845 AND E OF E11200 TOP FL420 MOV E 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 16/May/2017 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.0 C
Minimum Air Temperature                     24.6 C
Grass Minimum Temperature                   25.1 C
Relative Humidity                        85 - 97 Percent
Rainfall                                    38.5 mm 
Total rainfall since 1st January           242.0 mm
Against an average of                      468.9 mm

Other Stations                Min                  Max
King's Park                  23.8 C               26.4 C
Wong Chuk Hang               23.9 C               26.2 C
Ta Kwu Ling                  23.7 C               26.1 C
Lau Fau Shan                 23.9 C               26.2 C
Tai Po                       23.3 C               26.4 C
Sha Tin                      23.7 C               26.9 C
Tuen Mun                     24.8 C               26.7 C
Tseung Kwan O                24.0 C               26.4 C
Sai Kung                     24.2 C               26.5 C
Cheung Chau                  23.9 C               26.0 C
Chek Lap Kok                 24.9 C               28.1 C
Tsing Yi                     24.1 C               27.0 C
Shek Kong                    23.7 C               26.4 C
Tsuen Wan Ho Koon            23.4 C               25.4 C
Tsuen Wan Shing Mun Valley   23.6 C               26.1 C
Hong Kong Park               24.0 C               27.0 C
Shau Kei Wan                 23.6 C               26.4 C
Kowloon City                 23.5 C               26.2 C
Happy Valley                 24.7 C               27.5 C
Wong Tai Sin                 24.0 C               26.7 C
Stanley                      24.2 C               26.9 C
Kwun Tong                    24.4 C               26.8 C
Sham Shui Po                 24.0 C               27.1 C
Kai Tak Runway Park          24.3 C               26.9 C
Yuen Long Park               24.2 C               26.4 C
Tai Mei Tuk               23.0 C               26.0 C

Duration of sunshine (King's Park):              0.1 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 3.
 

Yesterday's (15 May 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                               0.09
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 15 May
     2003copy right image | Important notices | Privacy policy Last revision date: <16 May 2017> 

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