030
FZPQ50 PGUM 291936
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
536 AM CHST SUN AUG 30 2026
DISCUSSION
THERE WILL BE A MODERATE RISK OF RIP CURRENTS ALONG WEST- AND NORTH-
FACING REEFS FOR THE NEXT COUPLE OF DAYS. BUILDING SWELL THIS WEEK
MAY CAUSE THE RIP CURRENT RISK TO BECOME MODERATE ALONG EAST-FACING
REEFS AND HIGH ALONG WEST-FACING REEFS. THERE IS A MODERATE RISK OF
LIGHTNING AND WILL CONTINUE FOR THE NEXT SEVERAL DAYS FOR GUAM,
ENDING MONDAY FOR CNMI.
GUZ001-MPZ001>003-301045-
GUAM-ROTA-TINIAN-SAIPAN-
536 AM CHST SUN AUG 30 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............3 TO 5 FEET.
EAST FACING REEFS............3 TO 5 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 2 TO 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
WATER TEMPERATURE
APRA HARBOR BUOY..........86 DEGREES.
MAX HEAT INDEX.........AROUND 101.
WINDS...............NORTHWEST AT AROUND 10 MPH.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 3 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............10 SECONDS.
WINDS...............NORTHWEST AT AROUND 10 MPH.
MONDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............10 SECONDS.
MAX HEAT INDEX.........AROUND 102.
WINDS...............WEST TO SOUTHWEST AT 10 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.5 FEET AT 8:28 AM SUNDAY
LOW TIDE 0.5 FEET AT 2:57 PM SUNDAY
HIGH TIDE 2.5 FEET AT 9:09 PM SUNDAY
LOW TIDE 0.8 FEET AT 3:26 AM MONDAY
HIGH TIDE 2.4 FEET AT 9:17 AM MONDAY
LOW TIDE 0.7 FEET AT 3:32 PM MONDAY
HIGH TIDE 2.5 FEET AT 9:33 PM MONDAY
AT ROTA ISLAND...
HIGH TIDE 2.3 FEET AT 8:25 AM SUNDAY
LOW TIDE 0.5 FEET AT 2:51 PM SUNDAY
HIGH TIDE 2.4 FEET AT 9:06 PM SUNDAY
LOW TIDE 0.7 FEET AT 3:20 AM MONDAY
HIGH TIDE 2.3 FEET AT 9:14 AM MONDAY
LOW TIDE 0.7 FEET AT 3:26 PM MONDAY
HIGH TIDE 2.4 FEET AT 9:30 PM MONDAY
AT TINIAN ISLAND...
HIGH TIDE 1.8 FEET AT 8:26 AM SUNDAY
LOW TIDE 0.2 FEET AT 2:34 PM SUNDAY
HIGH TIDE 1.9 FEET AT 9:07 PM SUNDAY
LOW TIDE 0.3 FEET AT 3:03 AM MONDAY
HIGH TIDE 1.8 FEET AT 9:15 AM MONDAY
LOW TIDE 0.2 FEET AT 3:09 PM MONDAY
HIGH TIDE 1.9 FEET AT 9:31 PM MONDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.0 FEET AT 8:38 AM SUNDAY
LOW TIDE 0.3 FEET AT 3:07 PM SUNDAY
HIGH TIDE 2.1 FEET AT 9:31 PM SUNDAY
LOW TIDE 0.7 FEET AT 3:36 AM MONDAY
HIGH TIDE 2.0 FEET AT 9:30 AM MONDAY
LOW TIDE 0.5 FEET AT 3:41 PM MONDAY
HIGH TIDE 2.1 FEET AT 9:52 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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