SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 12:30 P.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 9:45 A.M. ON 21 AUGUST 2026

WARNINGS:

STRONG WINDS IN NAN'AO, SHANWEI, SOUTH OF HONG KONG AND
SHANGCHUAN DAO.

WEATHER SITUATION:

A BROAD TROUGH OF LOW PRESSURE IS BRINGING UNSETTLED
WEATHER TO THE NORTHERN PART OF THE SOUTH CHINA SEA AND THE
COASTAL WATERS OF GUANGDONG.

AT 10 A.M., THE TROPICAL DEPRESSION OVER BEIBU WAN WITH
MAXIMUM SUSTAINED WINDS OF ABOUT 55 KILOMETRES PER HOUR
NEAR ITS CENTRE WAS LOCATED AT 20.3 DEGREES NORTH, 108.6
DEGREES EAST. IT IS FORECAST TO BE SLOW-MOVING, LINGERING
OVER BEIBU WAN.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

SOUTH TO SOUTHEAST FORCE 4 TO 5.
OCCASIONAL SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE SEAS.

NAN'AO:
SOUTH TO SOUTHWEST FORCE 4 TO 5, OCCASIONALLY FORCE 6.
OCCASIONAL HEAVY SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

SHANWEI AND SOUTH OF HONG KONG:
SOUTH TO SOUTHWEST FORCE 4 TO 5, OCCASIONALLY FORCE 6.
SCATTERED SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

SHANGCHUAN DAO:
SOUTH TO SOUTHWEST FORCE 5 TO 6.
OCCASIONAL HEAVY SHOWERS AND SQUALLY THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

SOUTHWESTERLY WINDS OF FORCE 5 TO 6, OCCASIONALLY FORCE 7.
OCCASIONAL HEAVY SHOWERS AND SQUALLY THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND VARIABLE FORCE 1 
                   VISIBILITY 48 KILOMETRES

SHANTOU            WIND WEST-SOUTHWEST FORCE 1 
                   VISIBILITY 30 KILOMETRES

HUANGMAOZHOU       WIND NORTH-NORTHEAST FORCE 1

MACAU              WIND SOUTHWEST FORCE 1

XISHA              WIND SOUTHWEST FORCE 5 
                   VISIBILITY 11 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 09:45 HKT ON 21.08.2026