476
FZPQ50 PGUM 191905
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
505 AM CHST SUN SEP 20 2026
DISCUSSION
A MODERATE RISK FOR RIP CURRENTS WILL PERSIST THROUGH MONDAY.
A MODERATE RISK FOR LIGHTNING WILL CONTINUE THROUGH THE FIRST
HALF OF THIS WEEK, POSSIBLY LONGER.
GUZ001-MPZ001>003-201015-
GUAM-ROTA-TINIAN-SAIPAN-
505 AM CHST SUN SEP 20 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM SUNDAY
THROUGH 600 PM MONDAY
TODAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 3 TO 4 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT 2 TO 3 FEET.
SECONDARY PERIOD.............10 SECONDS.
MAX HEAT INDEX.........AROUND 104.
WATER TEMPERATURE
PAGO BAY BUOY..........85 DEGREES.
MAX HEAT INDEX.........AROUND 101.
WINDS...............LIGHT AND VARIABLE.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 3 TO 4 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTH AT 2 TO 3 FEET.
SECONDARY PERIOD.............10 SECONDS.
WINDS...............LIGHT AND VARIABLE.
MONDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............3 TO 5 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT 3 TO 4 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHEAST AT 2 TO 3 FEET.
SECONDARY PERIOD.............11 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............SOUTHEAST AT 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 0.3 FEET AT 8:28 AM SUNDAY
HIGH TIDE 2.0 FEET AT 4:48 PM SUNDAY
LOW TIDE 1.6 FEET AT 10:00 PM SUNDAY
HIGH TIDE 1.8 FEET AT 1:43 AM MONDAY
LOW TIDE 0.3 FEET AT 9:34 AM MONDAY
HIGH TIDE 2.1 FEET AT 5:29 PM MONDAY
LOW TIDE 1.5 FEET AT 10:50 PM MONDAY
AT ROTA ISLAND...
LOW TIDE 0.3 FEET AT 8:22 AM SUNDAY
HIGH TIDE 1.9 FEET AT 4:45 PM SUNDAY
LOW TIDE 1.5 FEET AT 9:54 PM SUNDAY
HIGH TIDE 1.7 FEET AT 1:40 AM MONDAY
LOW TIDE 0.3 FEET AT 9:28 AM MONDAY
HIGH TIDE 1.9 FEET AT 5:26 PM MONDAY
LOW TIDE 1.4 FEET AT 10:44 PM MONDAY
AT TINIAN ISLAND...
LOW TIDE 0.1 FEET AT 8:05 AM SUNDAY
HIGH TIDE 1.5 FEET AT 4:46 PM SUNDAY
LOW TIDE 0.5 FEET AT 9:37 PM SUNDAY
HIGH TIDE 1.3 FEET AT 1:41 AM MONDAY
LOW TIDE 0.1 FEET AT 9:11 AM MONDAY
HIGH TIDE 1.5 FEET AT 5:27 PM MONDAY
LOW TIDE 0.5 FEET AT 10:27 PM MONDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.3 FEET AT 8:45 AM SUNDAY
HIGH TIDE 1.8 FEET AT 5:20 PM SUNDAY
LOW TIDE 1.6 FEET AT 9:59 PM SUNDAY
HIGH TIDE 1.7 FEET AT 1:11 AM MONDAY
LOW TIDE 0.3 FEET AT 9:47 AM MONDAY
HIGH TIDE 1.9 FEET AT 5:50 PM MONDAY
LOW TIDE 1.5 FEET AT 10:41 PM MONDAY
* 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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