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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 09:02 HKT 25/Apr/2018

At 9 a.m. at the Hong Kong Observatory the air temperature was 24 degrees Celsius and the relative humidity 74 per cent.
During the past hour the mean UV Index recorded at King's Park was 0.5. The intensity of UV radiation was low.

The air temperatures at other places were:

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

Between midnight and 9 a.m. the minimum temperature was 23.5 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 25 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 08:45 HKT 25/Apr/2018

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

A broad band of clouds is covering the south China coast and the northern part of the South China Sea.

Weather forecast for today

Mainly cloudy. One or two showers at first. The maximum temperature will be about 26 degrees. Moderate northerly winds, becoming easterlies later.

Outlook : Mainly cloudy in the next couple of days. The weather will improve gradually over the weekend and early next week.


(The above forecast period is valid up to 23:59 HKT today, 25/04/2018; 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 25/Apr/2018

N0 WARNING.

GENERAL SITUATION AT 242100 UTC:
AN EASTERLY AIRSTREAM IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 250100 UTC:

HONG KONG= E TO NE 5. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA 2 M. TEMP 26-22 C. =
KWANGTUNG= E TO NE 5-6, OCNL 7. DOWN TO 4000 M IN ISOL SQUALLY SHOWERS AND TS. SEA UP TO 4 M. SWELL NE UP TO 2 M. =
TAIWAN STRAIT= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3 M. =
BASHI= E TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 3 M. =
PRATAS= E TO NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2 M. =
BALINTANG= E TO NE 5-6, OCNL 7. ISOL SHOWERS AND TS. SEA UP TO 4 M. SWELL NE 2-3 M. =
SCARBOROUGH= E TO NE 4-5. ISOL SHOWERS. SEA UP TO 2 M. SWELL NE 2 M. =
PARACEL= SE 4-5, E TO NE UP TO 6 IN N. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA UP TO 3 M. SWELL NE 2 M. =
TONKIN= E TO NE 5-6. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 2-3 M. SWELL NE UP TO 2 M. =
DANANG= SE 5. DOWN TO 2000 M IN SCT SQUALLY SHOWERS AND TS. SEA 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.



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 09:30 HKT 25/Apr/2018

Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 25 April 2018

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

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

Area forecasts for the next 24 hours

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

Nan'ao:
East to northeast force 5 to 6, occasionally force 7.
Isolated squally showers and thunderstorms.
Moderate to rough seas.

Shanwei and South of Hong Kong:
East to northeast force 5 to 6.
Isolated squally showers and thunderstorms.
Moderate to rough seas.

Shangchuan Dao:
East to northeast force 5 to 6.
Scattered squally showers and thunderstorms.
Moderate to rough seas.

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

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

Waglan Island Wind northeast force 4
  Visibility 19 Kilometres

Shantou Wind east-northeast force 2
  Visibility 17 Kilometres

Huangmaozhou Wind east force 5

Macau Wind north-northeast force 3
  Visibility 8 Kilometres

Xisha Wind south-southeast force 1
  Visibility 25 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 09:30 HKT 25/APR/2018
(Next update at 12:30 HKT 25/APR/2018)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN EASTERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  080/10
       OFFSHORE:  080/10-15                            23-26
   B.   2000 FT:  160/10                               19
   C.   5000 FT:  200/5                                16
   D.  10000 FT:  270/10                               9
   E.  18000 FT:  280/5                                MS3
   F.  24000 FT:  330/15                               MS13
   G.  30000 FT:  270/25                               MS26
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      MAINLY CLOUDY WITH A FEW ISOLATED SHOWERS.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 2000 FT  SCT 3000 FT  BKN 8000 FT.
   K. VISIBILITY    : 7 KM.  TEMPO 3000 M IN SHOWERS.
   L. 0 DEG. C LEVEL: 16500 FT      10 DEG. C LEVEL(S) : 9200 FT
   M. TURBULENCE    : NIL
   N. SEA STATE     : 1.0-1.5 M     SEA TEMPERATURE    : 25 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE EASTERLY WINDS.  MAINLY CLOUDY WITH A
     FEW ISOLATED SHOWERS.=
===================================================================
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 06:35 HKT on 25 Apr 18

VHHK SIGMET 8 VALID 242235/250235 VHHH- VHHK HONG KONG FIR EMBD TS FCST WI N2000 E11130 - N2124 E11130 - N2100 E11300 - N2000 E11300 - N2000 E11130 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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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 25/Apr/2018
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     26.7 C
Minimum Air Temperature                     23.9 C
Grass Minimum Temperature                   23.0 C
Relative Humidity                        76 - 91 Percent
Rainfall                                     8.2 mm 
Total rainfall since 1st January           117.1 mm
Against an average of                      304.1 mm

Other Stations                Min                  Max
King's Park                  24.1 C               26.7 C
Wong Chuk Hang               22.7 C               25.9 C
Ta Kwu Ling                  22.5 C               28.1 C
Lau Fau Shan                 22.6 C               26.4 C
Tai Po                       22.4 C               25.9 C
Sha Tin                      23.3 C               27.4 C
Tuen Mun                     22.9 C               26.4 C
Tseung Kwan O                21.6 C               26.8 C
Sai Kung                     23.3 C               26.4 C
Cheung Chau                  22.2 C               24.8 C
Chek Lap Kok                 23.1 C               27.3 C
Tsing Yi                     23.1 C               27.0 C
Shek Kong                    22.9 C               28.2 C
Tsuen Wan Ho Koon            21.7 C               24.9 C
Tsuen Wan Shing Mun Valley   22.1 C               26.7 C
Hong Kong Park               23.2 C               26.2 C
Shau Kei Wan                 23.4 C               25.6 C
Kowloon City                 23.8 C               27.1 C
Happy Valley                 23.6 C               27.1 C
Wong Tai Sin                 23.4 C               27.3 C
Stanley                      22.8 C               25.0 C
Kwun Tong                    24.0 C               26.9 C
Sham Shui Po                 24.1 C               26.9 C
Kai Tak Runway Park          23.9 C               25.6 C
Yuen Long Park               24.0 C               28.4 C
Tai Mei Tuk               23.1 C               27.2 C

Duration of sunshine (King's Park):              0.4 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 4.
Sea surface temperature (Waglan Island):        23.8 C 

Yesterday's (24 Apr 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                           0.08
Tap Mun                             0.09
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                         0.15
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 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 24 Apr
Last revision date: <25 Apr 2018> 

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