782
FZPQ50 PGUM 251909
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
509 AM CHST WED AUG 26 2026
DISCUSSION
A DOMINANT WEST-SOUTHWESTERLY MONSOON SWELL WILL REMAIN BUT CONTINUE
TO DECREASE THROUGH WEDNESDAY NIGHT. A MODERATE RISK OF RIP CURRENTS
ALONG NORTH, SOUTH, AND WEST FACING REEFS CONTINUES OVER THE NEXT
FEW DAYS. THERE IS ALSO A MODERATE RISK OF LIGHTNING FOR THE NEXT
SEVERAL DAYS.
GUZ001-MPZ001>003-261100-
GUAM-ROTA-TINIAN-SAIPAN-
509 AM CHST WED AUG 26 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM WEDNESDAY
THROUGH 600 PM THURSDAY
TODAY
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............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT AROUND 5 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.
WATER TEMPERATURE
PAGO PAGO BUOY..........84 DEGREES.
MAX HEAT INDEX.........AROUND 100.
WINDS...............WEST TO NORTHWEST WIND 5 TO 10 MPH WITH GUSTS TO
20 MPH NEAR HEAVIER SHOWERS.
TONIGHT
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..............NORTHWEST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
TERTIARY SWELL...............EAST AT AROUND 2 FEET.
TERTIARY PERIOD..............10 SECONDS.
WINDS...............LIGHT AND VARIABLE.
THURSDAY
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 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT AROUND 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTHWEST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
TERTIARY SWELL...............EAST AT AROUND 2 FEET.
TERTIARY PERIOD..............10 SECONDS.
MAX HEAT INDEX.........AROUND 100.
WINDS...............WEST AT AROUND 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
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
HIGH TIDE 2.4 FEET AT 6:18 AM THURSDAY
LOW TIDE 0.1 FEET AT 1:16 PM THURSDAY
HIGH TIDE 2.4 FEET AT 8:06 PM THURSDAY
AT ROTA ISLAND...
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
HIGH TIDE 2.2 FEET AT 6:15 AM THURSDAY
LOW TIDE 0.1 FEET AT 1:10 PM THURSDAY
HIGH TIDE 2.2 FEET AT 8:03 PM THURSDAY
AT TINIAN ISLAND...
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
HIGH TIDE 1.8 FEET AT 6:16 AM THURSDAY
LOW TIDE 0.0 FEET AT 12:53 PM THURSDAY
HIGH TIDE 1.8 FEET AT 8:04 PM THURSDAY
AT TANAPAG HARBOR, SAIPAN...
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
HIGH TIDE 2.0 FEET AT 6:13 AM THURSDAY
LOW TIDE 0.0 FEET AT 1:22 PM THURSDAY
HIGH TIDE 2.0 FEET AT 8:29 PM 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page