026
FZPQ50 PGUM 281910
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
510 AM CHST SAT AUG 29 2026
DISCUSSION
A COMBINATION OF PRIMARY WEST SWELL AND LIGHT NORTHEAST SWELL IS
PRODUCING A MODERATE RISK OF RIP CURRENTS ALONG WEST- AND NORTH-
FACING REEFS OVER THE NEXT SEVERAL DAYS. INCREASES IN SWELLS NEXT
WEEK MAY CAUSE RIP RISK TO INCREASE TO MODERATE ALONG EAST-FACING
REEFS SUNDAY NIGHT AND HIGH ALONG WEST-FACING REEFS TOWARDS THE
LATTER HALF OF NEXT WEEK. A MODERATE RISK OF LIGHTNING CONTINUES
THROUGH NEXT WEEK.
GUZ001-MPZ001>003-291000-
GUAM-ROTA-TINIAN-SAIPAN-
510 AM CHST SAT AUG 29 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM SATURDAY
THROUGH 600 PM SUNDAY
TODAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............3 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 2 TO 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
WATER TEMPERATURE
PAGO BUOY..........84 DEGREES.
MAX HEAT INDEX.........AROUND 100.
WINDS...............NORTHWEST AT 10 TO 15 MPH. GUSTS TO 25 MPH
POSSIBLE NEAR HEAVIER SHOWERS.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 5 FEET.
EAST FACING REEFS............3 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 2 TO 4 FEET.
PRIMARY PERIOD...............9 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
WINDS...............NORTHWEST AT 10 TO 15 MPH.
SUNDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 6 FEET.
EAST FACING REEFS............3 TO 4 FEET.
SOUTH FACING REEFS............3 TO 4 FEET.
WEST FACING REEFS............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................WEST AT 3 TO 5 FEET.
PRIMARY PERIOD...............10 SECONDS.
SECONDARY SWELL..............NORTHEAST AT AROUND 2 FEET.
SECONDARY PERIOD.............11 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............NORTHWEST AT 10 TO 15 MPH. GUSTS TO 25 MPH
POSSIBLE NEAR HEAVIER SHOWERS.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.5 FEET AT 7:43 AM SATURDAY
LOW TIDE 0.3 FEET AT 2:23 PM SATURDAY
HIGH TIDE 2.5 FEET AT 8:47 PM SATURDAY
LOW TIDE 1.0 FEET AT 2:49 AM SUNDAY
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
AT ROTA ISLAND...
HIGH TIDE 2.3 FEET AT 7:40 AM SATURDAY
LOW TIDE 0.3 FEET AT 2:17 PM SATURDAY
HIGH TIDE 2.3 FEET AT 8:44 PM SATURDAY
LOW TIDE 0.9 FEET AT 2:43 AM SUNDAY
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
AT TINIAN ISLAND...
HIGH TIDE 1.8 FEET AT 7:41 AM SATURDAY
LOW TIDE 0.1 FEET AT 2:00 PM SATURDAY
HIGH TIDE 1.8 FEET AT 8:45 PM SATURDAY
LOW TIDE 0.3 FEET AT 2:26 AM SUNDAY
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
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.0 FEET AT 7:49 AM SATURDAY
LOW TIDE 0.1 FEET AT 2:33 PM SATURDAY
HIGH TIDE 2.1 FEET AT 9:11 PM SATURDAY
LOW TIDE 0.9 FEET AT 2:59 AM SUNDAY
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 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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