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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 22:02 HKT 25/Oct/2017

At 10 p.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 73 per cent.

The air temperatures at other places were:

King's Park 23 degrees;
Wong Chuk Hang 22 degrees;
Ta Kwu Ling 21 degrees;
Lau Fau Shan 21 degrees;
Tai Po 22 degrees;
Sha Tin 22 degrees;
Tuen Mun 23 degrees;
Tseung Kwan O 21 degrees;
Sai Kung 22 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 25 degrees;
Tsing Yi 23 degrees;
Shek Kong 22 degrees;
Tsuen Wan Ho Koon 20 degrees;
Tsuen Wan Shing Mun Valley 21 degrees;
Hong Kong Park 23 degrees;
Shau Kei Wan 22 degrees;
Kowloon City 22 degrees;
Happy Valley 23 degrees;
Wong Tai Sin 23 degrees;
Stanley 23 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 23 degrees;
Kai Tak Runway Park 24 degrees;
Yuen Long Park 22 degrees;
Tai Mei Tuk 22 degrees.


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


Climatological Information for 25 Oct


Local Weather Forecast
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Local Weather Forecast

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

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 21:45 HKT 25/Oct/2017

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

The northeast monsoon continues to bring fine weather to southern China.

Tropical Storm Saola has intensified into a severe tropical storm. At 10 p.m., Saola was centred about 1270 kilometres southeast of Okinawa. It is forecast to move northwest at about 22 kilometres per hour towards the seas south of Japan and continue to intensify.

Weather forecast for tonight and tomorrow

It will be fine. The minimum temperature tomorrow morning will be about 23 degrees in the urban areas, and a couple of degrees lower in the New Territories. Dry during the day with a maximum temperature of around 28 degrees. Moderate east to northeasterly winds, fresh offshore at first.

Outlook : Fine and dry in the following few days. Slightly cooler early next week.


(The above forecast period is valid up to 23:59 HKT tomorrow, 26/10/2017; 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 25/Oct/2017

GALE WARNING AREAS: TAIWAN STRAIT, BASHI AND BALINTANG.

GENERAL SITUATION AT 250900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 251300 UTC:

HONG KONG= E TO NE 5-6, OCNL 7. FINE. SEA UP TO 4 M. SWELL NE 2 M. TEMP 23-28 C. =
KWANGTUNG= NE 6-7. FINE. SEA 3-4 M. SWELL NE 3 M. =
TAIWAN STRAIT= NE 7-8. FINE. SEA 4-6 M. SWELL NE 3-5 M. =
BASHI= NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL NE 3-5 M. =
PRATAS= NE 6-7. FINE. SEA 3-4 M. SWELL NE 3-5 M. =
BALINTANG= NE 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL NE 3-5 M. =
SCARBOROUGH= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 3 M. =
PARACEL= NE 6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL NE 2-3 M. =
TONKIN= NE 5-6. ISOL SHOWERS. SEA 2-3 M. SWELL NE 2 M. =
DANANG= NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL NE 2-3 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

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9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

Bulletin issued at 19:30 HKT 25/Oct/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 7:30 p.m. on 25 October 2017

Warnings:
Strong winds in all areas.

Weather Situation:
The northeast monsoon is affecting the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
East to northeast force 5 to 6, occasionally force 7.
Moderate to rough seas.

Nan'ao, Shanwei and South of Hong Kong:
Northeast force 6 to 7.
Rough seas.

Shangchuan Dao:
Northeast force 6, occasionally force 7.
Rough seas.

Outlook for the next 48 hours
Northeasterly winds of force 5 to 6.

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

Waglan Island Wind east-northeast force 4
  Visibility 14 Kilometres

Shantou Wind east force 2
  Visibility 24 Kilometres

Dongsha Wind northeast force 4
  Visibility 10 Kilometres

Huangmaozhou Wind east force 5

Macau Wind east-southeast force 2
  Visibility 15 Kilometres

Xisha Wind northeast force 3
  Visibility 13 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 25/OCT/2017
(Next update at 01:30 HKT 26/OCT/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10
       OFFSHORE:  080/10-15, OCNL 20                   26-22
   B.   2000 FT:  080/10-15, OCNL 20                   17
   C.   5000 FT:  040/10-15                            14
   D.  10000 FT:  010/10                               10
   E.  18000 FT:  010/10                               MS4
   F.  24000 FT:  270/10                               MS12
   G.  30000 FT:  180/10                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4600-5000 FT.
   I. WEATHER       : 
      FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3500 FT.
   K. VISIBILITY    : 7 KM.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 27 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH EAST TO NORTHEASTERLY WINDS.
     FINE.=
===================================================================
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 02:56 HKT on 16 Oct 17

VHHK SIGMET 10 VALID 151500/151900 VHHH- VHHK HONG KONG FIR SEV TURB FCST W OF E115 FL340/400 STNR NC= VHHK SIGMET 11 VALID 151900/152300 VHHH- VHHK HONG KONG FIR SEV TURB FCST W OF E115 FL340/400 STNR 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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Last revision date: <25 Oct 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 25/Oct/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.3 C
Minimum Air Temperature                     22.5 C
Grass Minimum Temperature                   21.0 C
Relative Humidity                        53 - 74 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2540.9 mm
Against an average of                     2322.5 mm

Other Stations                Min                  Max
King's Park                  22.0 C               27.6 C
Wong Chuk Hang               20.9 C               27.5 C
Ta Kwu Ling                  17.3 C               28.7 C
Sha Tin                      19.5 C               27.7 C
Tuen Mun                     20.6 C               29.2 C
Tseung Kwan O                19.7 C               27.9 C
Sai Kung                     21.3 C               26.1 C
Cheung Chau                  21.9 C               27.0 C
Chek Lap Kok                 22.5 C               28.4 C
Tsing Yi                     21.4 C               28.4 C
Shek Kong                    18.6 C               29.0 C
Tsuen Wan Ho Koon            19.4 C               27.0 C
Tsuen Wan Shing Mun Valley   19.3 C               29.1 C
Hong Kong Park               21.9 C               27.4 C
Shau Kei Wan                 21.4 C               26.2 C
Kowloon City                 21.0 C               28.1 C
Happy Valley                 21.2 C               28.7 C
Wong Tai Sin                 21.7 C               28.2 C
Stanley                      22.5 C               26.6 C
Kwun Tong                    21.2 C               27.0 C
Sham Shui Po                 21.3 C               29.1 C
Kai Tak Runway Park          22.4 C               27.1 C
Yuen Long Park               19.5 C               29.6 C
Tai Mei Tuk               21.3 C               27.5 C

Duration of sunshine (King's Park):              10.2 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 7.
Sea surface temperature (Waglan Island):        26.2 C 

Yesterday's (24 Oct 2017) 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                               0.09
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                        0.15

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 24 Oct
Last revision date: <25 Oct 2017> 

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