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 31 MAY 2026

WARNINGS:

STRONG WINDS IN NAN'AO.

WEATHER SITUATION:

AN EASTERLY AIRSTREAM IS AFFECTING THE COASTAL WATERS OF
EASTERN GUANGDONG.

AT 10 A.M., TYPHOON JANGMI WITH MAXIMUM SUSTAINED WINDS OF
ABOUT 120 KILOMETRES PER HOUR NEAR ITS CENTRE WAS LOCATED
AT 21.1 DEGREES NORTH, 128.0 DEGREES EAST. IT IS FORECAST
TO MOVE NORTH OR NORTH-NORTHWEST AT ABOUT 14 KILOMETRES PER
HOUR TOWARDS THE VICINITY OF THE RYUKYU ISLANDS.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

EAST TO SOUTHEAST FORCE 3 TO 4.
A FEW SHOWERS AND THUNDERSTORMS.
SLIGHT TO MODERATE SEAS.

NAN'AO:
EAST TO NORTHEAST FORCE 4 TO 5, OCCASIONALLY FORCE 6.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE TO ROUGH SEAS.

SHANWEI:
EAST TO NORTHEAST FORCE 4, OCCASIONALLY FORCE 5.
ISOLATED SHOWERS AND THUNDERSTORMS.
MODERATE SEAS.

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

SHANGCHUAN DAO:
EAST TO SOUTHEAST FORCE 3 TO 4.
ISOLATED SHOWERS AND THUNDERSTORMS.
SLIGHT TO MODERATE SEAS.

OUTLOOK FOR THE FOLLOWING 48 HOURS

EASTERLY WINDS OF FORCE 4, OCCASIONALLY FORCE 5, BECOMING
SOUTHERLY WINDS OF UP TO FORCE 5. ISOLATED SHOWERS AND
THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND EAST-NORTHEAST FORCE 2 
                   VISIBILITY 23 KILOMETRES

SHANTOU            WIND WEST-SOUTHWEST FORCE 1 
                   VISIBILITY 26 KILOMETRES

HUANGMAOZHOU       WIND NORTHWEST FORCE 2

MACAU              WIND SOUTH FORCE 2 
                   VISIBILITY 6 KILOMETRES IN THUNDERSTORMS

XISHA              WIND NORTHEAST FORCE 1 
                   VISIBILITY 26 KILOMETRES

DISPATCHED BY HONG KONG OBSERVATORY AT 09:47 HKT ON 31.05.2026