553
FZPQ50 PGUM 130647
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
447 PM CHST MON JUL 13 2026
DISCUSSION
THERE WILL BE A MODERATE RISK OF RIP CURRENTS TONIGHT FOR ALL REEFS,
AND THEN JUST S AND W REEFS BY TUESDAY. THE RIP RISK COULD BECOME
HIGH ALONG S AND W FACING REEFS WEDNESDAY AS A SW SWELL BUILDS IN.
THERE WILL ALSO BE A MODERATE RISK OF LIGHTNING ALL THIS WEEK AS WET
SEASON BUILDS IN.
GUZ001-MPZ001>003-132200-
GUAM-ROTA-TINIAN-SAIPAN-
447 PM CHST MON JUL 13 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 PM MONDAY
THROUGH 600 AM WEDNESDAY
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............4 TO 6 FEET.
WEST FACING REEFS............4 TO 6 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTH AT AROUND 4 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 3 FEET.
SECONDARY PERIOD.............8 SECONDS.
TERTIARY SWELL...............WEST AT AROUND 3 FEET.
TERTIARY PERIOD..............8 SECONDS.
WATER TEMPERATURE
TANAPAG BUOY.......... 83 DEGREES.
WINDS...............SOUTH AT 10 TO 15 MPH.
TUESDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT AROUND 5 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............8 SECONDS.
TERTIARY SWELL...............WEST AT AROUND 3 FEET.
TERTIARY PERIOD..............8 SECONDS.
MAX HEAT INDEX.........AROUND 102.
WINDS...............SOUTHWEST AT 15 TO 20 MPH.
TUESDAY NIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 3 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............5 TO 7 FEET.
WEST FACING REEFS............5 TO 7 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT AROUND 5 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
TERTIARY SWELL...............WEST AT AROUND 2 FEET.
TERTIARY PERIOD..............8 SECONDS.
WINDS...............SOUTHWEST AT 10 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.7 FEET AT 8:12 PM MONDAY
LOW TIDE 2.0 FEET AT 1:02 AM TUESDAY
HIGH TIDE 2.8 FEET AT 5:58 AM TUESDAY
LOW TIDE -0.6 FEET AT 1:33 PM TUESDAY
HIGH TIDE 2.7 FEET AT 8:57 PM TUESDAY
LOW TIDE 1.9 FEET AT 2:00 AM WEDNESDAY
HIGH TIDE 2.9 FEET AT 6:54 AM WEDNESDAY
AT ROTA ISLAND...
HIGH TIDE 2.5 FEET AT 8:09 PM MONDAY
LOW TIDE 1.8 FEET AT 12:56 AM TUESDAY
HIGH TIDE 2.7 FEET AT 5:55 AM TUESDAY
LOW TIDE -0.6 FEET AT 1:27 PM TUESDAY
HIGH TIDE 2.5 FEET AT 8:54 PM TUESDAY
LOW TIDE 1.8 FEET AT 1:54 AM WEDNESDAY
HIGH TIDE 2.7 FEET AT 6:51 AM WEDNESDAY
AT TINIAN ISLAND...
HIGH TIDE 2.0 FEET AT 8:10 PM MONDAY
LOW TIDE 0.6 FEET AT 12:39 AM TUESDAY
HIGH TIDE 2.1 FEET AT 5:56 AM TUESDAY
LOW TIDE -0.2 FEET AT 1:10 PM TUESDAY
HIGH TIDE 2.0 FEET AT 8:55 PM TUESDAY
LOW TIDE 0.6 FEET AT 1:37 AM WEDNESDAY
HIGH TIDE 2.1 FEET AT 6:52 AM WEDNESDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.3 FEET AT 8:39 PM MONDAY
LOW TIDE 1.9 FEET AT 12:56 AM TUESDAY
HIGH TIDE 2.4 FEET AT 5:40 AM TUESDAY
LOW TIDE -0.8 FEET AT 1:38 PM TUESDAY
HIGH TIDE 2.4 FEET AT 9:22 PM TUESDAY
LOW TIDE 1.8 FEET AT 2:11 AM WEDNESDAY
HIGH TIDE 2.4 FEET AT 6:44 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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