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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 18:02 HKT 23/Apr/2018

At 6 p.m. at the Hong Kong Observatory the air temperature was 27 degrees Celsius and the relative humidity 73 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.3. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 27 degrees;
Wong Chuk Hang 26 degrees;
Ta Kwu Ling 28 degrees;
Lau Fau Shan 27 degrees;
Tai Po 27 degrees;
Sha Tin 27 degrees;
Tuen Mun 27 degrees;
Tseung Kwan O 27 degrees;
Sai Kung 26 degrees;
Cheung Chau 26 degrees;
Chek Lap Kok 28 degrees;
Tsing Yi 26 degrees;
Shek Kong 27 degrees;
Tsuen Wan Ho Koon 25 degrees;
Tsuen Wan Shing Mun Valley 26 degrees;
Hong Kong Park 26 degrees;
Shau Kei Wan 26 degrees;
Kowloon City 27 degrees;
Happy Valley 26 degrees;
Wong Tai Sin 27 degrees;
Stanley 25 degrees;
Kwun Tong 27 degrees;
Sham Shui Po 26 degrees;
Kai Tak Runway Park 26 degrees;
Yuen Long Park 27 degrees;
Tai Mei Tuk 27 degrees.


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


Climatological Information for 23 Apr


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 17:50 HKT 23/Apr/2018

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

A southerly airstream is affecting the coast of Guangdong. Locally, it was hot in the afternoon. Temperatures rose to around 30 degrees at many places over the territory. Besides, a trough of low pressure over inland Guangdong is moving southwards gradually, and will cross the coastal areas tomorrow.

Weather forecast for tonight and tomorrow

Becoming cloudy. There will be showers tomorrow with a few thunderstorms in the morning. Temperatures will range between 23 and 26 degrees. Light winds, becoming moderate northerlies tomorrow.

Outlook : Mainly cloudy in the following couple of days.


(The above forecast period is valid up to 23:59 HKT tomorrow, 24/04/2018; 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 09:00 HKT 23/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 222100 UTC:
TROUGH 25N 107E 30N 120E SE SLOWLY.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= S 4, N 4-5 LATER. DOWN TO 1000 M IN MIST OR RAIN PATCHES. ISOL SHOWERS AND TS LATER. SEA UP TO 2 M. TEMP 30-22 C. =
KWANGTUNG= S TO SE 4-5 , N TO NE 5-6 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. ISOL SHOWERS AND TS LATER. SEA UP TO 2 M, 2-3 M LATER. =
TAIWAN STRAIT= S 4-5, N TO NE 5-6 LATER. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
BASHI= S TO SE 5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
PRATAS= S TO SE 4-5. ISOL SHOWERS. SEA UP TO 2 M. =
BALINTANG= S TO SE 5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. =
SCARBOROUGH= E TO SE 4-5. FINE. SEA UP TO 2 M. =
PARACEL= S TO SE 4-5. FINE. SEA UP TO 2 M. =
TONKIN= S 5-6, N 5-6 LATER. DOWN TO 2000 M IN MIST OR RAIN PATCHES. ISOL SHOWERS AND TS LATER. SEA 2-3 M. =
DANANG= S 5, OCNL 6. ISOL SHOWERS. 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 16:30 HKT 23/Apr/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 4:30 p.m. on 23 April 2018

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

Weather Situation:
A southerly airstream is affecting the south China coastal waters. Besides, the trough of low pressure over inland Guangdong is moving southwards gradually, and will cross the south China coastal waters tomorrow.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
South force 4, becoming north force 5 later.
Isolated showers and thunderstorms. Fog patches.
Moderate seas.

Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
South force 4 to 5, becoming north to northeast force 5 to 6 later.
Isolated showers and thunderstorms.
Moderate seas, becoming rough later.

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

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

Waglan Island Wind south force 3
  Visibility 31 Kilometres

Shantou Wind east-southeast force 2
  Visibility 30 Kilometres

Huangmaozhou Wind south force 2

Macau Wind south-southeast force 3
  Visibility 24 Kilometres

Xisha Wind south force 2
  Visibility 23 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 17:30 HKT 23/APR/2018
(Next update at 01:30 HKT 24/APR/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     ISOL CUNIM/TS AND ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE COAST OF
     GUANGDONG.  BESIDES, A TROUGH OF LOW PRESSURE
     OVER INLAND GUANGDONG IS MOVING SOUTHWARDS
     GRADUALLY, AND WILL CROSS THE COASTAL AREAS
     TOMORROW.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  180/5-10
                  TEMPO VRB/15G25 IN TS                27-23
   B.   2000 FT:  230/15                               21
   C.   5000 FT:  240/10                               17
   D.  10000 FT:  260/20                               10
   E.  18000 FT:  300/20                               MS5
   F.  24000 FT:  310/25                               MS14
   G.  30000 FT:  320/45                               MS27
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY WITH A FEW SHOWERS AND THUNDERSTORMS.
      LOCALIZED MIST LATER.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1500 FT  SCT 3500 FT.  TEMPO FEW CB 800 FT
      SCT 1500 FT  BKN 4000 FT.
   K. VISIBILITY    : 9 KM.  TEMPO 4000 M IN SHOWERS/MIST.
                      TEMPO 2000 M IN TS.
   L. 0 DEG. C LEVEL: 15000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS.  MOD NEAR HILLS.
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 24 DEG
IV.  FURTHER OUTLOOK: 
     LIGHT WINDS, BECOMING MODERATE NORTHERLY WINDS.
     CLOUDY WITH SHOWERS AND A FEW 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 13:35 HKT on 15 Apr 18

VHHK SIGMET 3 VALID 150345/150745 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2000 E11130 - N2124 E11130 - N2230 E11342 - N2336 E11712 - N2242 E11712 - N2000 E11130 - N2000 E11130 TOP FL400 MOV NE 15KT NC= VHHK SIGMET 5 VALID 150535/150935 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2248 E11442 - N2342 E11730 - N2248 E11730 - N2154 E11442 - N2248 E11442 TOP FL400 MOV NE 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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Last revision date: <06 Apr 2018> 

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 23/Apr/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     29.0 C
Minimum Air Temperature                     23.7 C
Grass Minimum Temperature                   22.9 C
Relative Humidity                        76 - 91 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           108.9 mm
Against an average of                      287.6 mm

Other Stations                Min                  Max
King's Park                  23.1 C               28.3 C
Wong Chuk Hang               23.6 C               28.3 C
Ta Kwu Ling                  23.0 C               29.5 C
Lau Fau Shan                 21.7 C               29.9 C
Tai Po                       23.1 C               27.3 C
Sha Tin                      23.5 C               28.8 C
Tuen Mun                     23.5 C               29.2 C
Tseung Kwan O                22.9 C               27.2 C
Sai Kung                     23.3 C               27.8 C
Cheung Chau                  22.7 C               29.1 C
Chek Lap Kok                 24.0 C               30.2 C
Tsing Yi                     24.1 C               30.2 C
Shek Kong                    22.2 C               30.7 C
Tsuen Wan Ho Koon            22.2 C               27.9 C
Tsuen Wan Shing Mun Valley   23.2 C               28.8 C
Hong Kong Park               23.4 C               29.4 C
Shau Kei Wan                 22.6 C               26.2 C
Kowloon City                 23.1 C               28.6 C
Happy Valley                 24.0 C               29.6 C
Wong Tai Sin                 23.0 C               27.9 C
Stanley                      22.9 C               26.5 C
Kwun Tong                    23.0 C               28.8 C
Sham Shui Po                 23.3 C               28.3 C
Kai Tak Runway Park          23.7 C               26.2 C
Yuen Long Park               22.3 C               31.0 C
Tai Mei Tuk               22.8 C               28.7 C

Duration of sunshine (King's Park):              4.5 H
The mean UV index recorded at King's Park yesterday was 4,
the UV intensity was Moderate.
The maximum UV index for yesterday was 8.
Sea surface temperature (Waglan Island):        23.7 C 

Yesterday's (22 Apr 2018) 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                               0.10
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 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 22 Apr
Last revision date: <23 Apr 2018> 

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