393
FZPQ50 PGUM 141805
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
405 AM CHST TUE SEP 15 2026
DISCUSSION
THERE IS A MODERATE RISK OF RIP CURRENTS ALONG NORTH-
AND EAST-FACING REEFS THROUGH WEDNESDAY. A MODERATE RISK OF RIP
CURRENTS MAY EXPAND TO SOUTH FACING REEFS ON WEDNESDAY. THERE IS A
MODERATE RISK OF LIGHTNING THROUGH TONIGHT.
GUZ001-MPZ001>003-150915-
GUAM-ROTA-TINIAN-SAIPAN-
405 AM CHST TUE SEP 15 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM TUESDAY
THROUGH 600 PM WEDNESDAY
TODAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 4 TO 5 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTHEAST AT AROUND 3 FEET.
SECONDARY PERIOD.............8 SECONDS.
WATER TEMPERATURE
PAGO BUOY..........86 DEGREES.
MAX HEAT INDEX.........AROUND 103.
WINDS...............NORTH AT AROUND 10 MPH.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 4 TO 5 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTH AT AROUND 3 FEET.
SECONDARY PERIOD.............8 SECONDS.
WINDS...............NORTHWEST AT AROUND 10 MPH.
WEDNESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............1 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 5 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTH AT AROUND 3 FEET.
SECONDARY PERIOD.............8 SECONDS.
MAX HEAT INDEX.........AROUND 104.
WINDS...............NORTHWEST AT 10 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.2 FEET AT 10:36 AM TUESDAY
LOW TIDE 1.2 FEET AT 4:19 PM TUESDAY
HIGH TIDE 2.2 FEET AT 9:40 PM TUESDAY
LOW TIDE 0.2 FEET AT 4:47 AM WEDNESDAY
HIGH TIDE 2.1 FEET AT 11:38 AM WEDNESDAY
LOW TIDE 1.4 FEET AT 5:01 PM WEDNESDAY
AT ROTA ISLAND...
HIGH TIDE 2.1 FEET AT 10:33 AM TUESDAY
LOW TIDE 1.2 FEET AT 4:13 PM TUESDAY
HIGH TIDE 2.1 FEET AT 9:37 PM TUESDAY
LOW TIDE 0.2 FEET AT 4:41 AM WEDNESDAY
HIGH TIDE 1.9 FEET AT 11:35 AM WEDNESDAY
LOW TIDE 1.4 FEET AT 4:55 PM WEDNESDAY
AT TINIAN ISLAND...
HIGH TIDE 1.6 FEET AT 10:34 AM TUESDAY
LOW TIDE 0.4 FEET AT 3:56 PM TUESDAY
HIGH TIDE 1.7 FEET AT 9:38 PM TUESDAY
LOW TIDE 0.1 FEET AT 4:24 AM WEDNESDAY
HIGH TIDE 1.5 FEET AT 11:36 AM WEDNESDAY
LOW TIDE 0.5 FEET AT 4:38 PM WEDNESDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 1.9 FEET AT 11:03 AM TUESDAY
LOW TIDE 1.1 FEET AT 4:26 PM TUESDAY
HIGH TIDE 2.0 FEET AT 9:57 PM TUESDAY
LOW TIDE 0.2 FEET AT 5:01 AM WEDNESDAY
HIGH TIDE 1.9 FEET AT 12:10 PM WEDNESDAY
LOW TIDE 1.4 FEET AT 5:04 PM WEDNESDAY
* 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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