9-DAY WEATHER FORECAST


9-DAY WEATHER FORECAST
 
GENERAL SITUATION:
TROPICAL CYCLONE RAGASA WILL MOVE ACROSS THE VICINITY OF
LUZON STRAIT AND ENTER THE NORTHERN PART OF THE SOUTH CHINA
SEA IN THE NEXT COUPLE OF DAYS. UNDER THE INFLUENCE OF ITS
OUTER SUBSIDING AIR, THE WEATHER WILL BE VERY HOT OVER THE
COAST OF GUANGDONG ON MONDAY TO EARLY TUESDAY. RAGASA IS
EXPECTED TO EDGE CLOSER TO THE COAST OF GUANGDONG GRADUALLY
ON TUESDAY. UNDER THE INFLUENCE OF ITS BROAD CIRCULATION,
THE WEATHER OVER THE REGION WILL BEGIN TO DETERIORATE
RAPIDLY WITH WINDS STRENGTHENING SIGNIFICANTLY LATER ON
TUESDAY. THERE WILL BE HEAVY SQUALLY SHOWERS, THUNDERSTORMS
AND SIGNIFICANT STORM SURGE ON WEDNESDAY. SEAS WILL BE VERY
HIGH WITH SWELLS. WITH THE DEPARTURE OF RAGASA, SHOWERS
WILL EASE OFF GRADUALLY IN THE LATTER PART OF THIS WEEK.
BESIDES, A BROAD TROUGH OF LOW PRESSURE WILL BRING
UNSETTLED WEATHER TO THE CENTRAL AND NORTHERN PARTS OF THE
SOUTH CHINA SEA TO THE EASTERN PART OF THE PHILIPPINES IN
THE LATTER PART OF THIS WEEK.
 
DATE/MONTH 22/9 (MONDAY)
WIND: EAST FORCE 4, OCCASIONALLY FORCE 5 OFFSHORE AND ON
HIGH GROUND, BECOMING NORTH.
WEATHER: BECOMING FINE. VERY HOT DURING THE DAY. THERE WILL
BE SWELLS.
TEMP RANGE: 26 - 34 C
R.H. RANGE: 55 - 95 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: LOW
 
DATE/MONTH 23/9 (TUESDAY)
WIND: NORTH FORCE 5 TO 6, FORCE 7 TO 8 LATER, UP TO FORCE 9
OFFSHORE AND ON HIGH GROUND.
WEATHER: BECOMING CLOUDY. VERY HOT WITH SUNNY INTERVALS IN
THE MORNING. SQUALLY SHOWERS AND THUNDERSTORMS LATER. SEAS
WILL BE VERY ROUGH WITH SWELLS.
TEMP RANGE: 27 - 33 C
R.H. RANGE: 55 - 95 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: MEDIUM HIGH
 
DATE/MONTH 24/9 (WEDNESDAY)
WIND: EAST TO NORTHEAST FORCE 9 TO 10. IT MAY REACH FORCE
12 OFFSHORE AND ON HIGH GROUND. BECOMING SOUTHEAST. FORCE 7
TO 8 LATER.
WEATHER: CLOUDY TO OVERCAST WITH HEAVY SQUALLY SHOWERS AND
THUNDERSTORMS. SEAS WILL BE VERY HIGH WITH SWELLS.
TEMP RANGE: 25 - 28 C
R.H. RANGE: 80 - 95 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: HIGH
 
DATE/MONTH 25/9 (THURSDAY)
WIND: EAST TO SOUTHEAST FORCE 5 TO 6, FORCE 7 OFFSHORE AND
ON HIGH GROUND AT FIRST.
WEATHER: CLOUDY WITH SQUALLY SHOWERS AND THUNDERSTORMS.
SHOWERS WILL BE HEAVY AT FIRST. SEAS WILL BE VERY ROUGH
WITH SWELLS.
TEMP RANGE: 25 - 29 C
R.H. RANGE: 80 - 95 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: HIGH
 
DATE/MONTH 26/9 (FRIDAY)
WIND: EAST FORCE 4, OCCASIONALLY FORCE 5.
WEATHER: MAINLY CLOUDY WITH OCCASIONAL SHOWERS AND A FEW
SQUALLY THUNDERSTORMS.
TEMP RANGE: 26 - 30 C
R.H. RANGE: 75 - 95 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: MEDIUM HIGH
 
DATE/MONTH 27/9 (SATURDAY)
WIND: EAST TO NORTHEAST FORCE 4, OCCASIONALLY FORCE 5.
WEATHER: MAINLY CLOUDY WITH ONE OR TWO SHOWERS. SUNNY
PERIODS DURING THE DAY.
TEMP RANGE: 27 - 32 C
R.H. RANGE: 65 - 90 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: MEDIUM LOW
 
DATE/MONTH 28/9 (SUNDAY)
WIND: EAST FORCE 4 TO 5.
WEATHER: MAINLY CLOUDY WITH A FEW SHOWERS.
TEMP RANGE: 27 - 31 C
R.H. RANGE: 65 - 90 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: MEDIUM LOW
 
DATE/MONTH 29/9 (MONDAY)
WIND: EAST TO SOUTHEAST FORCE 4, OCCASIONALLY FORCE 5.
WEATHER: MAINLY CLOUDY WITH A FEW SHOWERS AND THUNDERSTORMS.
TEMP RANGE: 27 - 31 C
R.H. RANGE: 70 - 95 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: MEDIUM
 
DATE/MONTH 30/9 (TUESDAY)
WIND: EAST TO SOUTHEAST FORCE 4.
WEATHER: MAINLY CLOUDY WITH A FEW SHOWERS.
TEMP RANGE: 27 - 31 C
R.H. RANGE: 70 - 95 PER CENT
PROBABILITY OF SIGNIFICANT RAIN FORECAST: MEDIUM LOW

DISPATCHED BY HONG KONG OBSERVATORY AT 23:30 HKT ON 21.09.2025