259
FZPQ50 PGUM 241934
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
534 AM CHST TUE AUG 25 2026
DISCUSSION
WEST TO SOUTHWESTERLY MONSOON SWELL WILL CONTINUE TO PRODUCE
ELEVATED SURF OF 5 TO 8 FEET THROUGH TONIGHT, GRADUALLY DECREASING
FOR THE REMAINDER OF THE WEEK. THERE IS A MODERATE RISK OF RIP
CURRENTS ALONG ALL REEFS OVER THE NEXT FEW DAYS, POSSIBLY BECOMING
LOW FOR EAST-FACING REEFS WEDNESDAY. THERE IS A MODERATE RISK OF
LIGHTNING FOR THE NEXT SEVERAL DAYS STARTING THIS AFTERNOON.
GUZ001-MPZ001>003-251100-
GUAM-ROTA-TINIAN-SAIPAN-
534 AM CHST TUE AUG 25 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............4 TO 6 FEET.
EAST FACING REEFS............4 TO 5 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............6 TO 8 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 3 FEET.
SECONDARY PERIOD.............13 SECONDS.
TERTIARY SWELL...............NORTHWEST AT 2 TO 3 FEET.
TERTIARY PERIOD..............10 SECONDS.
WATER TEMPERATURE
PAGO PAGO BUOY..........84 DEGREES.
MAX HEAT INDEX.........AROUND 101.
WINDS...............SOUTHWEST AT 5 TO 15 MPH.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 5 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............12 SECONDS.
TERTIARY SWELL...............NORTHWEST AT AROUND 2 FEET.
TERTIARY PERIOD..............10 SECONDS.
WINDS...............WEST AT AROUND 10 MPH IN THE EVENING
BECOMING LIGHT.
WEDNESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............3 TO 4 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
TERTIARY SWELL...............NORTHWEST AT AROUND 2 FEET.
TERTIARY PERIOD..............10 SECONDS.
MAX HEAT INDEX.........AROUND 103.
WINDS...............LIGHT AND VARIABLE.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 0.1 FEET AT 12:00 PM TUESDAY
HIGH TIDE 2.3 FEET AT 7:20 PM TUESDAY
LOW TIDE 1.6 FEET AT 12:32 AM WEDNESDAY
HIGH TIDE 2.3 FEET AT 5:33 AM WEDNESDAY
LOW TIDE 0.1 FEET AT 12:40 PM WEDNESDAY
HIGH TIDE 2.3 FEET AT 7:44 PM WEDNESDAY
LOW TIDE 1.5 FEET AT 1:06 AM THURSDAY
AT ROTA ISLAND...
LOW TIDE 0.1 FEET AT 11:54 AM TUESDAY
HIGH TIDE 2.1 FEET AT 7:17 PM TUESDAY
LOW TIDE 1.5 FEET AT 12:26 AM WEDNESDAY
HIGH TIDE 2.1 FEET AT 5:30 AM WEDNESDAY
LOW TIDE 0.1 FEET AT 12:34 PM WEDNESDAY
HIGH TIDE 2.2 FEET AT 7:41 PM WEDNESDAY
LOW TIDE 1.4 FEET AT 1:00 AM THURSDAY
AT TINIAN ISLAND...
LOW TIDE 0.0 FEET AT 11:37 AM TUESDAY
HIGH TIDE 1.7 FEET AT 7:18 PM TUESDAY
LOW TIDE 0.5 FEET AT 12:09 AM WEDNESDAY
HIGH TIDE 1.7 FEET AT 5:31 AM WEDNESDAY
LOW TIDE 0.0 FEET AT 12:17 PM WEDNESDAY
HIGH TIDE 1.7 FEET AT 7:42 PM WEDNESDAY
LOW TIDE 0.5 FEET AT 12:43 AM THURSDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.0 FEET AT 12:02 PM TUESDAY
HIGH TIDE 1.9 FEET AT 7:44 PM TUESDAY
LOW TIDE 1.5 FEET AT 12:09 AM WEDNESDAY
HIGH TIDE 2.0 FEET AT 5:24 AM WEDNESDAY
LOW TIDE 0.0 FEET AT 12:43 PM WEDNESDAY
HIGH TIDE 2.0 FEET AT 8:07 PM WEDNESDAY
LOW TIDE 1.4 FEET AT 12:56 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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