187
FZPQ50 PGUM 261838
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
438 AM CHST SUN SEP 27 2026
DISCUSSION
THE RISK OF RIP CURRENTS IS CURRENTLY LOW ALONG ALL
REEFS OF THE MARIANAS AND IS EXPECTED TO STAY THAT WAY THROUGH AT
LEAST TUESDAY. ONLY A VERY SMALL SOUTHWEST SWELL AND EAST-NORTHEAST
SWELL REMAINS. THE SOUTHWEST SWELL MAY START TO INCREASE WEDNESDAY AS
THE MONSOON FLOW STRENGTHENS AND MOVES INTO THE MARIANAS. THERE WILL
BE A MODERATE RISK OF LIGHTNING SUNDAY AFTERNOON THROUGH MONDAY, AND
THEN WEDNESDAY NIGHT TO THE END OF THE FORECAST PERIOD.
GUZ001-MPZ001>003-270945-
GUAM-ROTA-TINIAN-SAIPAN-
438 AM CHST SUN SEP 27 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM SUNDAY
THROUGH 600 PM MONDAY
TODAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............2 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT AROUND 2 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTHWEST AT AROUND 2 FEET.
SECONDARY PERIOD.............8 SECONDS.
WATER TEMPERATURE
PAGO BUOY..........85 DEGREES.
MAX HEAT INDEX.........AROUND 104.
WINDS...............LIGHT AND VARIABLE.
TONIGHT
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............2 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT AROUND 2 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTHWEST AT AROUND 2 FEET.
SECONDARY PERIOD.............8 SECONDS.
WINDS...............LIGHT AND VARIABLE.
MONDAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............2 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT AROUND 2 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............SOUTHWEST AT AROUND 2 FEET.
SECONDARY PERIOD.............8 SECONDS.
MAX HEAT INDEX.........AROUND 104.
WINDS...............LIGHT AND VARIABLE.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.4 FEET AT 7:44 AM SUNDAY
LOW TIDE 0.6 FEET AT 1:52 PM SUNDAY
HIGH TIDE 2.5 FEET AT 7:48 PM SUNDAY
LOW TIDE 0.3 FEET AT 2:16 AM MONDAY
HIGH TIDE 2.4 FEET AT 8:33 AM MONDAY
LOW TIDE 0.9 FEET AT 2:30 PM MONDAY
AT ROTA ISLAND...
HIGH TIDE 2.3 FEET AT 7:41 AM SUNDAY
LOW TIDE 0.6 FEET AT 1:46 PM SUNDAY
HIGH TIDE 2.3 FEET AT 7:45 PM SUNDAY
LOW TIDE 0.3 FEET AT 2:10 AM MONDAY
HIGH TIDE 2.3 FEET AT 8:30 AM MONDAY
LOW TIDE 0.8 FEET AT 2:24 PM MONDAY
AT TINIAN ISLAND...
HIGH TIDE 1.8 FEET AT 7:42 AM SUNDAY
LOW TIDE 0.2 FEET AT 1:29 PM SUNDAY
HIGH TIDE 1.8 FEET AT 7:46 PM SUNDAY
LOW TIDE 0.1 FEET AT 1:53 AM MONDAY
HIGH TIDE 1.8 FEET AT 8:31 AM MONDAY
LOW TIDE 0.3 FEET AT 2:07 PM MONDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.1 FEET AT 7:57 AM SUNDAY
LOW TIDE 0.6 FEET AT 2:01 PM SUNDAY
HIGH TIDE 2.1 FEET AT 8:02 PM SUNDAY
LOW TIDE 0.3 FEET AT 2:24 AM MONDAY
HIGH TIDE 2.1 FEET AT 8:49 AM MONDAY
LOW TIDE 0.8 FEET AT 2:40 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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