SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 4:30 P.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 12:30 P.M. ON 21 AUGUST 2025

WEATHER SITUATION:

A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA COASTAL
WATERS. MEANWHILE, AN AREA OF LOW PRESSURE IS BRINGING
UNSETTLED WEATHER TO THE SEAS EAST OF THE PHILIPPINES.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

SOUTH FORCE 4.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE SEAS.

NAN'AO:
SOUTH TO SOUTHWEST FORCE 4.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE SEAS.

SHANWEI AND SOUTH OF HONG KONG:
SOUTH FORCE 4.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE SEAS.

SHANGCHUAN DAO:
SOUTH TO SOUTHEAST FORCE 4, OCCASIONALLY FORCE 5.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

SOUTH TO SOUTHEASTERLY WINDS OF FORCE 4, OCCASIONALLY FORCE
5, BECOMING EAST TO NORTHEASTERLY WINDS OF UP TO FORCE 6.
SCATTERED SQUALLY SHOWERS AND THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND CALM 
                   VISIBILITY OVER 50 KILOMETRES

SHANTOU            WIND WEST FORCE 2 
                   VISIBILITY 30 KILOMETRES

HUANGMAOZHOU       WIND SOUTH FORCE 3

MACAU              WIND SOUTH-SOUTHEAST FORCE 2 
                   VISIBILITY OVER 70 KILOMETRES

XISHA              WIND EAST FORCE 2 
                   VISIBILITY 24 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 12:30 HKT ON 21.08.2025