645
FZPQ50 PGUM 080731
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
531 PM CHST TUE SEP 8 2026
DISCUSSION
THERE IS A MODERATE RISK OF RIP CURRENTS ALONG WEST FACING REEFS
TONIGHT, JOINED BY NORTH AND EAST FACING REEFS ON WEDNESDAY. THERE
IS A MODERATE RISK OF LIGHTNING TONIGHT THROUGH WEDNESDAY MORNING FOR
SAIPAN AND TINIAN AND AFTER MIDNIGHT THROUGH WEDNESDAY AFTERNOON FOR
GUAM AND ROTA.
GUZ001-MPZ001>003-082245-
GUAM-ROTA-TINIAN-SAIPAN-
531 PM CHST TUE SEP 8 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM TUESDAY
THROUGH 600 AM THURSDAY
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 4 FEET.
EAST FACING REEFS............3 TO 4 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 4 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
PAGO BUOY..........86 DEGREES.
WINDS...............NORTH TO NORTHEAST AT AROUND 10 MPH.
WEDNESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 5 FEET.
EAST FACING REEFS............4 TO 5 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 4 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 100.
WINDS...............NORTHEAST TO EAST AT AROUND 10 MPH.
WEDNESDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............4 TO 5 FEET.
SOUTH FACING REEFS............1 TO 3 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT AROUND 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............NORTHEAST TO EAST AT AROUND 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.4 FEET AT 6:40 PM TUESDAY
LOW TIDE 1.5 FEET AT 11:59 PM TUESDAY
HIGH TIDE 2.4 FEET AT 5:07 AM WEDNESDAY
LOW TIDE -0.2 FEET AT 12:15 PM WEDNESDAY
HIGH TIDE 2.5 FEET AT 7:12 PM WEDNESDAY
LOW TIDE 1.2 FEET AT 12:47 AM THURSDAY
AT ROTA ISLAND...
HIGH TIDE 2.3 FEET AT 6:37 PM TUESDAY
LOW TIDE 1.4 FEET AT 11:53 PM TUESDAY
HIGH TIDE 2.3 FEET AT 5:04 AM WEDNESDAY
LOW TIDE -0.2 FEET AT 12:09 PM WEDNESDAY
HIGH TIDE 2.3 FEET AT 7:09 PM WEDNESDAY
LOW TIDE 1.2 FEET AT 12:41 AM THURSDAY
AT TINIAN ISLAND...
HIGH TIDE 1.8 FEET AT 6:38 PM TUESDAY
LOW TIDE 0.5 FEET AT 11:36 PM TUESDAY
HIGH TIDE 1.8 FEET AT 5:05 AM WEDNESDAY
LOW TIDE -0.1 FEET AT 11:52 AM WEDNESDAY
HIGH TIDE 1.8 FEET AT 7:10 PM WEDNESDAY
LOW TIDE 0.4 FEET AT 12:24 AM THURSDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.2 FEET AT 6:49 PM TUESDAY
LOW TIDE 1.4 FEET AT 11:49 PM TUESDAY
HIGH TIDE 2.1 FEET AT 5:07 AM WEDNESDAY
LOW TIDE -0.2 FEET AT 12:15 PM WEDNESDAY
HIGH TIDE 2.2 FEET AT 7:22 PM WEDNESDAY
LOW TIDE 1.1 FEET AT 12:42 AM THURSDAY
* LOW RISK OF RIP CURRENTS - STRONG CURRENTS CAN STILL OCCUR NEAR
JETTIES AND REEF CHANNELS. ALWAYS HAVE A FLOTATION DEVICE WITH YOU
IN THE WATER.
MODERATE RISK OF RIP CURRENTS - WAVE CONDITIONS SUPPORT STRONGER OR
MORE FREQUENT RIP CURRENTS. ALWAYS HAVE A FLOTATION DEVICE WITH YOU
IN THE WATER.
HIGH RISK OF RIP CURRENTS - LARGE WAVES WILL PRODUCE STRONG RIP
CURRENTS, ESPECIALLY ALONG NARROW REEFS AND BEACHES. RIP CURRENTS
WILL BE LIFE THREATENING. IF CAUGHT IN A RIP CURRENT, SWIM PARALLEL
TO THE BEACH RATHER THAN AGAINST THE CURRENT.
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