339
FPMY50 PGUM 260832 AAA
ZFPGUM

Zone Forecast for Guam and the Northern Marianas...UPDATED
National Weather Service Tiyan GU
632 PM ChST Sat Jul 26 2025

Updated Rota, Tinian and Saipan forecast for tonight to increase
shower coverage

GUZ001-270045-
Guam-
632 PM ChST Sat Jul 26 2025

...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 6 PM CHST SUNDAY ALONG
SOUTH AND WEST FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM CHST SUNDAY ALONG NORTH
AND SOUTH FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH SUNDAY AFTERNOON ALONG
NORTH AND SOUTH FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM CHST TUESDAY ALONG WEST
FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH TUESDAY AFTERNOON ALONG
WEST FACING REEFS...

.TONIGHT...Cloudy with scattered showers and isolated thunderstorms.
Southwest winds 10 to 20 mph. Lows around 77. Chance of showers 40
percent.
.SUNDAY...Cloudy with scattered showers and isolated thunderstorms.
Southwest winds 10 to 20 mph. Highs around 85. Chance of showers 40
percent.
.SUNDAY NIGHT AND MONDAY...Mostly cloudy with scattered showers and
isolated thunderstorms. Southwest winds 10 to 15 mph. Lows around 77.
Highs around 86. Chance of showers 30 percent.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Mostly cloudy. Isolated
showers and thunderstorms. Southwest winds 5 to 15 mph. Lows around
78. Highs around 87. Chance of showers 20 percent.
.WEDNESDAY THROUGH SATURDAY...Mostly cloudy with a 20 percent chance
of showers and thunderstorms. Highs in the upper 80s. Lows in the
upper 70s.

$$

MPZ001>003-270045-
Rota-Tinian-Saipan-
632 PM ChST Sat Jul 26 2025

...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...
...WIND ADVISORY NOW IN EFFECT UNTIL 6 AM CHST SUNDAY...
...COASTAL FLOOD WARNING IN EFFECT UNTIL 6 PM CHST SUNDAY ALONG
SOUTH AND WEST FACING REEFS...
...HIGH SURF WARNING IN EFFECT UNTIL 6 AM CHST SUNDAY ALONG SOUTH
AND WEST FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT UNTIL TO 6 AM CHST MONDAY ALONG
NORTH FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT FROM 6 AM SUNDAY TO 6 AM CHST MONDAY
ALONG SOUTH FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH SUNDAY NIGHT ALONG NORTH
AND SOUTH FACING REEFS...
...HIGH SURF ADVISORY IN EFFECT FROM 6 AM SUNDAY TO 6 PM CHST
TUESDAY ALONG WEST FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH TUESDAY AFTERNOON ALONG
WEST FACING REEFS...

.TONIGHT...Windy. Cloudy. Numerous showers Tinian and Saipan.
Scattered showers Rota. Isolated thunderstorms. Locally heavy
downpours possible. Southwest winds 25 to 30 mph with gusts to 40.
Lows around 77. Chance of showers 70 percent Tinian and Saipan; 40
percent Rota.
.SUNDAY...Breezy. Cloudy with scattered showers and isolated
thunderstorms. Southwest winds 20 to 25 mph. Highs around 83. Chance
of showers 50 percent.
.SUNDAY NIGHT...Mostly cloudy with scattered showers and isolated
thunderstorms. Southwest winds 15 to 20 mph. Lows around 79. Chance
of showers 40 percent.
.MONDAY...Mostly cloudy with scattered showers and isolated
thunderstorms. Southwest winds 15 to 20 mph. Highs around 86. Chance
of showers 30 percent.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Mostly cloudy. Isolated
showers and thunderstorms. Southwest winds 10 to 20 mph. Lows around
79. Highs around 86. Chance of showers 20 percent.
.WEDNESDAY THROUGH SATURDAY...Mostly cloudy with a 20 percent chance
of showers and thunderstorms. Highs in the upper 80s. Lows in the
upper 70s.

$$