SOUTH CHINA COASTAL WATERS

(NOT TO BE ISSUED AFTER 9:45 A.M.)

WEATHER INFORMATION FOR SOUTH CHINA COASTAL WATERS ISSUED
BY THE HONG KONG OBSERVATORY AT 5:30 A.M. ON 21 AUGUST 2025

WEATHER SITUATION:

A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH CHINA COASTAL
WATERS.

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 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
LATER. SCATTERED SQUALLY SHOWERS AND THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND CALM 
                   VISIBILITY 42 KILOMETRES

SHANTOU            WIND NORTH-NORTHWEST FORCE 1 
                   VISIBILITY 19 KILOMETRES

HUANGMAOZHOU       WIND SOUTH-SOUTHEAST FORCE 2

MACAU              WIND SOUTH-SOUTHEAST FORCE 2 
                   VISIBILITY 45 KILOMETRES

XISHA              WIND EAST-SOUTHEAST FORCE 1 
                   VISIBILITY 28 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 05:30 HKT ON 21.08.2025