327
FZPQ50 PGUM 290600
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
400 PM CHST MON DEC 29 2025
DISCUSSION
THERE IS A HIGH RISK OF RIP CURRENTS ALONG WEST
AND NORTH FACING REEFS AND A MODERATE ALONG EAST FACING REEFS.
A PULSE OF NORTHWEST SWELL HAS INCREASED THESE REEFS TO HAZARDOUS
CONDITIONS. THIS IS EXPECTED TO BE A SHORT-LIVED EVENT. SURF MAY
START TO FALL AS EARLY AS TUESDAY. THE NORTHWEST SWELL IS
ANTICIPATED TO CONTINUE TO DIMINISH OVER THE NEXT SEVERAL DAYS.
GUZ001-MPZ001>003-292100-
GUAM-ROTA-TINIAN-SAIPAN-
400 PM CHST MON DEC 29 2025
...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST TUESDAY ALONG WEST
AND NORTH FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH TUESDAY AFTERNOON ALONG
WEST AND NORTH FACING REEFS...
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM MONDAY
THROUGH 600 AM WEDNESDAY
TONIGHT
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............7 TO 9 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............7 TO 9 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT 4 TO 6 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............NORTHEAST AT 3 TO 5 FEET.
SECONDARY PERIOD.............12 SECONDS.
WATER TEMPERATURE
RITIDIAN BUOY..........84 DEGREES.
WINDS...............NORTHEAST AT 10 TO 15 MPH.
TUESDAY
RIP CURRENT RISK.....HIGH *.
SURF HEIGHT
NORTH FACING REEFS............7 TO 9 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............7 TO 9 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT 4 TO 6 FEET.
PRIMARY PERIOD...............11 SECONDS.
SECONDARY SWELL..............NORTHEAST AT 3 TO 5 FEET.
SECONDARY PERIOD.............12 SECONDS.
MAX HEAT INDEX.........AROUND 97.
WINDS...............EAST AT 15 TO 20 MPH.
TUESDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............6 TO 8 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............6 TO 8 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHWEST AT 4 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT 3 TO 4 FEET.
SECONDARY PERIOD.............12 SECONDS.
WINDS...............EAST AT 10 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 0.0 FEET AT 9:41 PM MONDAY
HIGH TIDE 1.6 FEET AT 4:26 AM TUESDAY
LOW TIDE 1.1 FEET AT 9:03 AM TUESDAY
HIGH TIDE 2.3 FEET AT 3:01 PM TUESDAY
LOW TIDE -0.4 FEET AT 10:34 PM TUESDAY
HIGH TIDE 1.8 FEET AT 5:52 AM WEDNESDAY
AT ROTA ISLAND...
LOW TIDE 0.0 FEET AT 9:35 PM MONDAY
HIGH TIDE 1.5 FEET AT 4:23 AM TUESDAY
LOW TIDE 1.0 FEET AT 8:57 AM TUESDAY
HIGH TIDE 2.1 FEET AT 2:58 PM TUESDAY
LOW TIDE -0.4 FEET AT 10:28 PM TUESDAY
HIGH TIDE 1.7 FEET AT 5:49 AM WEDNESDAY
AT TINIAN ISLAND...
LOW TIDE 0.0 FEET AT 9:18 PM MONDAY
HIGH TIDE 1.2 FEET AT 4:24 AM TUESDAY
LOW TIDE 0.4 FEET AT 8:40 AM TUESDAY
HIGH TIDE 1.7 FEET AT 2:59 PM TUESDAY
LOW TIDE -0.1 FEET AT 10:11 PM TUESDAY
HIGH TIDE 1.4 FEET AT 5:50 AM WEDNESDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 0.2 FEET AT 9:54 PM MONDAY
HIGH TIDE 1.7 FEET AT 4:56 AM TUESDAY
LOW TIDE 1.3 FEET AT 9:14 AM TUESDAY
HIGH TIDE 2.3 FEET AT 2:58 PM TUESDAY
LOW TIDE -0.2 FEET AT 10:41 PM TUESDAY
HIGH TIDE 1.9 FEET AT 6:12 AM 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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