731
FPMY50 PGUM 230607
ZFPGUM
ZONE FORECAST FOR GUAM AND THE NORTHERN MARIANAS
NATIONAL WEATHER SERVICE TIYAN GU
407 PM CHST SUN AUG 23 2026
GUZ001-MPZ001>003-232115-
GUAM-ROTA-TINIAN-SAIPAN-
407 PM CHST SUN AUG 23 2026
...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST MONDAY ALONG WEST-
FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH MONDAY AFTERNOON ALONG
WEST-FACING REEFS...
TONIGHT
CLOUDY WITH SCATTERED SHOWERS BECOMING NUMEROUS HEAVY
SHOWERS AND ISOLATED THUNDERSTORMS BEFORE MIDNIGHT. SOUTHWEST WINDS
10 TO 15 MPH WITH GUSTS TO 25 MPH NEAR HEAVIER SHOWERS. LOWS AROUND
77. CHANCE OF SHOWERS 60 PERCENT.
MONDAY
CLOUDY WITH NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS.
SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO 25 MPH NEAR HEAVIER SHOWERS.
HIGHS AROUND 85. CHANCE OF SHOWERS 60 PERCENT.
MONDAY NIGHT
MOSTLY CLOUDY WITH SCATTERED HEAVY SHOWERS AND
ISOLATED THUNDERSTORMS. SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
25 MPH NEAR HEAVIER SHOWERS. LOWS AROUND 78. CHANCE OF SHOWERS 50
PERCENT.
TUESDAY THROUGH WEDNESDAY
MOSTLY CLOUDY WITH SCATTERED LOCALLY
HEAVY SHOWERS AND ISOLATED THUNDERSTORMS. SOUTHWEST WINDS 5 TO 10
MPH. HIGHS AROUND 87. LOWS AROUND 78. CHANCE OF SHOWERS 40 PERCENT.
WEDNESDAY NIGHT AND THURSDAY
MOSTLY CLOUDY. A 40 PERCENT CHANCE
OF SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER
70S. HIGHS IN THE MID 80S.
THURSDAY NIGHT AND FRIDAY
CLOUDY WITH SHOWERS LIKELY AND A SLIGHT
CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S. HIGHS IN THE MID
80S. CHANCE OF SHOWERS 60 PERCENT.
FRIDAY NIGHT THROUGH SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS AND A SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 70S.
HIGHS IN THE MID 80S. CHANCE OF SHOWERS 50 PERCENT.
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