168
FZPQ50 PGUM 230601
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
401 PM CHST FRI OCT 23 2026
DISCUSSION
A MODERATE RISK OF RIP CURRENTS IS EXPECTED ALONG NORTH,
EAST, AND WEST FACING REEFS OF THE MARIANAS THROUGH SATURDAY NIGHT.
THEN, RIP CURRENT RISK MAY DROP TO LOW ALONG WEST FACING REEFS AS
NORTHEASTERLY SWELL AND WESTERLY SWELL DIMINISH FURTHER. A MODERATE
RISK OF LIGHTNING IS EXPECTED SATURDAY AND SATURDAY NIGHT.
GUZ001-MPZ001>003-232000-
GUAM-ROTA-TINIAN-SAIPAN-
401 PM CHST FRI OCT 23 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM FRIDAY
THROUGH 600 AM SUNDAY
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............6 TO 8 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............WEST AT AROUND 4 FEET.
SECONDARY PERIOD.............13 SECONDS.
WATER TEMPERATURE
APRA HARBOR..........84 DEGREES.
WINDS...............EAST AT 10 TO 15 MPH.
SATURDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 7 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............WEST AT AROUND 3 FEET.
SECONDARY PERIOD.............14 SECONDS.
MAX HEAT INDEX.........AROUND 99.
WINDS...............EAST AT 10 TO 15 MPH.
SATURDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 7 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............3 TO 5 FEET.
SWELL/PERIOD
PRIMARY SWELL................NORTHEAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............WEST AT AROUND 3 FEET.
SECONDARY PERIOD.............14 SECONDS.
WINDS...............EAST AT 10 TO 15 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.3 FEET AT 5:41 PM FRIDAY
LOW TIDE 0.5 FEET AT 12:03 AM SATURDAY
HIGH TIDE 2.1 FEET AT 6:05 AM SATURDAY
LOW TIDE 0.6 FEET AT 11:56 AM SATURDAY
HIGH TIDE 2.3 FEET AT 6:04 PM SATURDAY
LOW TIDE 0.2 FEET AT 12:37 AM SUNDAY
HIGH TIDE 2.2 FEET AT 6:58 AM SUNDAY
AT ROTA ISLAND...
HIGH TIDE 2.1 FEET AT 5:38 PM FRIDAY
LOW TIDE 0.5 FEET AT 11:57 PM FRIDAY
HIGH TIDE 1.9 FEET AT 6:02 AM SATURDAY
LOW TIDE 0.6 FEET AT 11:50 AM SATURDAY
HIGH TIDE 2.2 FEET AT 6:01 PM SATURDAY
LOW TIDE 0.2 FEET AT 12:31 AM SUNDAY
HIGH TIDE 2.1 FEET AT 6:55 AM SUNDAY
AT TINIAN ISLAND...
HIGH TIDE 1.7 FEET AT 5:39 PM FRIDAY
LOW TIDE 0.2 FEET AT 11:40 PM FRIDAY
HIGH TIDE 1.5 FEET AT 6:03 AM SATURDAY
LOW TIDE 0.2 FEET AT 11:33 AM SATURDAY
HIGH TIDE 1.7 FEET AT 6:02 PM SATURDAY
LOW TIDE 0.1 FEET AT 12:14 AM SUNDAY
HIGH TIDE 1.6 FEET AT 6:56 AM SUNDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.1 FEET AT 5:49 PM FRIDAY
LOW TIDE 0.6 FEET AT 11:59 PM FRIDAY
HIGH TIDE 1.9 FEET AT 6:14 AM SATURDAY
LOW TIDE 0.7 FEET AT 11:54 AM SATURDAY
HIGH TIDE 2.1 FEET AT 6:10 PM SATURDAY
LOW TIDE 0.3 FEET AT 12:35 AM SUNDAY
HIGH TIDE 2.0 FEET AT 7:10 AM 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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