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 5 OCTOBER 2025

WARNINGS:

HURRICANE FORCE WINDS IN SOUTH OF HONG KONG AND SHANGCHUAN
DAO. GALE FORCE WINDS IN HONG KONG ADJACENT WATERS AND
SHANWEI. STRONG WINDS IN NAN'AO.

WEATHER SITUATION:

AT 5 A.M., TYPHOON MATMO WITH MAXIMUM SUSTAINED WINDS OF
ABOUT 140 KILOMETRES PER HOUR NEAR ITS CENTRE WAS LOCATED
AT 19.8 DEGREES NORTH, 112.3 DEGREES EAST. IT IS FORECAST
TO MOVE WEST-NORTHWEST AT ABOUT 22 KILOMETRES PER HOUR
ACROSS THE NORTHERN PART OF THE SOUTH CHINA SEA AND TOWARDS
THE VICINITY OF LEIZHOU PENINSULA.

AREA FORECASTS FOR THE NEXT 24 HOURS

HONG KONG ADJACENT WATERS:

EAST FORCE 6 TO 7, OCCASIONALLY FORCE 8, BECOMING SOUTHEAST
FORCE 8.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH TO VERY ROUGH SEAS.

NAN'AO:
SOUTHEAST FORCE 4 TO 5, UP TO FORCE 6 AT FIRST.
OCCASIONAL HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
MODERATE SEAS, ROUGH AT FIRST.

SHANWEI:
SOUTHEAST FORCE 6 TO 7, UP TO FORCE 8 AT FIRST.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
ROUGH SEAS, VERY ROUGH AT FIRST.

SOUTH OF HONG KONG:
SOUTHEAST FORCE 10 TO 11, FORCE 12 AT FIRST.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
HIGH TO VERY HIGH SEAS, PHENOMENAL AT FIRST.

SHANGCHUAN DAO:
SOUTH TO SOUTHEAST FORCE 10 TO 11, CYCLONIC FORCE 12 AT
FIRST.
FREQUENT HEAVY SQUALLY SHOWERS AND THUNDERSTORMS.
HIGH TO VERY HIGH SEAS, PHENOMENAL AT FIRST.

OUTLOOK FOR THE FOLLOWING 48 HOURS

SOUTHEASTERLY WINDS OF FORCE 5 TO 6, SOUTHERLY WINDS OF UP
TO FORCE 7 IN WEST AT FIRST. FREQUENT HEAVY SQUALLY SHOWERS
AND THUNDERSTORMS.

LATEST REPORTS FROM SOUTH CHINA COASTAL WEATHER STATIONS

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WAGLAN ISLAND      WIND EAST FORCE 7 
                   VISIBILITY 10 KILOMETRES

SHANTOU            WIND EAST-SOUTHEAST FORCE 2 
                   VISIBILITY 30 KILOMETRES

MACAU              WIND EAST-SOUTHEAST FORCE 4 
                   VISIBILITY 600 METRES IN RAIN

XISHA              WIND SOUTHWEST FORCE 5 
                   VISIBILITY 3900 METRES IN RAIN

DISPATCHED BY HONG KONG OBSERVATORY AT 05:30 HKT ON 05.10.2025