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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 01:02 HKT 16/Aug/2017

At 1 a.m. at the Hong Kong Observatory the air temperature was 29 degrees Celsius and the relative humidity 79 per cent.

The air temperatures at other places were:

King's Park 29 degrees;
Wong Chuk Hang 28 degrees;
Ta Kwu Ling 26 degrees;
Lau Fau Shan 28 degrees;
Tai Po 28 degrees;
Sha Tin 29 degrees;
Tuen Mun 28 degrees;
Tseung Kwan O 28 degrees;
Sai Kung 28 degrees;
Cheung Chau 27 degrees;
Chek Lap Kok 30 degrees;
Tsing Yi 28 degrees;
Shek Kong 29 degrees;
Tsuen Wan Ho Koon 27 degrees;
Tsuen Wan Shing Mun Valley 28 degrees;
Hong Kong Park 29 degrees;
Shau Kei Wan 29 degrees;
Kowloon City 29 degrees;
Happy Valley 29 degrees;
Wong Tai Sin 29 degrees;
Stanley 28 degrees;
Kwun Tong 29 degrees;
Sham Shui Po 29 degrees;
Kai Tak Runway Park 28 degrees;
Yuen Long Park 29 degrees;
Tai Mei Tuk 28 degrees.


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


Climatological Information for 16 Aug


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 00:45 HKT 16/Aug/2017

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

The subtropical ridge covered southeastern China yesterday. Locally, it was mainly fine. There were isolated showers in the morning. The weather was very hot in the afternoon with temperatures rising to 33 degrees or above over most parts of the territory. The subtropical ridge is expected to weaken slightly today and tomorrow, it will be slightly cloudier over southeastern China.

Weather forecast for Hong Kong

Mainly cloudy with isolated showers. The minimum temperature will be about 28 degrees. Hot with sunny periods during the day. The maximum temperature will be around 32 degrees in the urban areas, and a couple of degrees higher in the New Territories. Moderate south to southwesterly winds.

Outlook : Sunny periods on Thursday. Fine and very hot during the weekend and early next week.


(The above forecast period is valid up to 23:59 HKT today, 16/08/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)



MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

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

N0 WARNING.

GENERAL SITUATION AT 150900 UTC:
A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS. TROUGH 24N 106E 25N 112E 29N 116E QSTNR.

MARINE FORECAST FOR 24 HOURS FROM 151300 UTC:

HONG KONG= S TO SW 4-5. ISOL SHOWERS. SEA UP TO 2 M. TEMP 28-32 C. =
KWANGTUNG= S TO SW 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
TAIWAN STRAIT= SW 4-5. FINE. SEA UP TO 2 M. =
BASHI= W TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
PRATAS= S TO SW 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
BALINTANG= W TO SW 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
SCARBOROUGH= S 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
PARACEL= S 4-5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 2 M. =
TONKIN= S 5-6. DOWN TO 2000 M IN SCT SQUALLY 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.



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 23:30 HKT 15/Aug/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 15 August 2017

Warnings:
Strong winds in Shangchuan Dao.

Weather Situation:
A southwesterly airstream is affecting the coastal waters of Guangdong.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
South to southwest force 4 to 5.
Isolated showers.
Moderate seas.

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

South of Hong Kong:
South to southwest force 4 to 5.
Moderate seas.

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

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

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

Waglan Island Wind south-southwest force 2
  Visibility 47 Kilometres

Shantou Wind south-southwest force 2
  Visibility 30 Kilometres

Dongsha Wind west-southwest force 2
  Visibility 10 Kilometres

Huangmaozhou Wind south force 3

Macau Wind southwest force 2
  Visibility 35 Kilometres

Xisha Wind southeast force 2
  Visibility 30 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 16/AUG/2017
(Next update at 9:00-9:30 HKT 16/AUG/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHWESTERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA
     COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  200/5-10
       OFFSHORE:  200/10-15                            28-34
   B.   2000 FT:  220/10-15                            24
   C.   5000 FT:  220/10                               19
   D.  10000 FT:  220/10                               12
   E.  18000 FT:  160/10                               MS4
   F.  24000 FT:  220/10                               MS13
   G.  30000 FT:  200/15                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY OVERNIGHT. SUNNY PERIODS DURING THE DAY.
      ISOLATED SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 11200 FT
   M. TURBULENCE    : NIL.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT TO MODERATE SOUTHWESTERLY WINDS. SUNNY PERIODS.
     ISOLATED SHOWERS. A FEW THUNDERSTORMS OVER INLAND.=
===================================================================
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 12:20 HKT on 04 Aug 17

VHHK SIGMET 1 VALID 040020/040420 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N1930 E11130 - N2124 E11130 - N2230 E11342 - N2300 E11512 - N2012 E11406 - N1930 E11130 TOP FL420 MOV N 10KT NC= VHHK SIGMET 2 VALID 040420/040820 VHHH- VHHK HONG KONG FIR EMBD TS FCSTWI N2006 E11130 - N2124 E11130 - N2230 E11342 - N2254 E11454 - N2130 E11454 - N2006 E11130 TOP FL420 MOV N 10KT NC= VHHK SIGMET 3 VALID 040420/040820 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2006 E11130 - N2124 E11130 - N2230 E11342 - N2254 E11454 - N2130 E11454 - N2006 E11130 TOP FL420 MOV N 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.

The latest report on Tropical Cyclone Roke broadcast by Miss LEE SHUK MING , Senior Scientific Officer of the Hong Kong Observatory at 6:23 p.m. on 23 Jul 2017.
Listen Listen

For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.


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Last revision date: <08 Aug 2017> 

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/Aug/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     32.9 C
Minimum Air Temperature                     28.1 C
Grass Minimum Temperature                   26.8 C
Relative Humidity                        59 - 83 Percent
Rainfall                                     0.2 mm 
Total rainfall since 1st January          1905.3 mm
Against an average of                     1679.4 mm

Other Stations                Min                  Max
King's Park                  27.7 C               31.8 C
Wong Chuk Hang               27.2 C               31.6 C
Ta Kwu Ling                  24.6 C               34.4 C
Lau Fau Shan                 27.3 C               33.6 C
Tai Po                       26.6 C               33.3 C
Sha Tin                      27.1 C               33.4 C
Tuen Mun                     27.8 C               33.1 C
Tseung Kwan O                26.3 C               34.0 C
Sai Kung                     27.6 C               34.4 C
Cheung Chau                  26.2 C               32.5 C
Chek Lap Kok                 29.0 C               34.4 C
Tsing Yi                     26.7 C               31.9 C
Shek Kong                    26.3 C               34.6 C
Tsuen Wan Ho Koon            25.4 C               31.7 C
Tsuen Wan Shing Mun Valley   26.6 C               32.5 C
Hong Kong Park               27.0 C               33.4 C
Shau Kei Wan                 26.1 C               32.8 C
Kowloon City                 27.5 C               33.3 C
Happy Valley                 27.5 C               33.7 C
Wong Tai Sin                 27.5 C               33.3 C
Stanley                      26.8 C               31.4 C
Kwun Tong                    28.0 C               33.1 C
Sham Shui Po                 27.8 C               32.4 C
Kai Tak Runway Park          27.6 C               33.2 C
Tai Mei Tuk               26.9 C               33.1 C

Duration of sunshine (King's Park):              9.6 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):        26.6 C 

Yesterday's (15 Aug 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                             0.08
Kat O                               0.08
Yuen Ng Fan                         0.11
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.11
Sai Wan Ho                          0.08
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 Aug
Last revision date: <16 Aug 2017> 

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