023
FZPQ50 PGUM 181901
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
501 AM CHST SUN JUL 19 2026
DISCUSSION
A LOW RISK OF RIP CURRENTS IS EXPECTED TO CONTINUE ALONG ALL REEFS
FOR THE NEXT FEW DAYS. DURING THE LATTER HALF OF THE WEEK, THE RIP
RISK MAY INCREASE ONCE AGAIN TO MODERATE WITH AN INCREASE IN SWELLS
ASSOCIATED WITH INVEST 90W.
GUZ001-MPZ001>003-190800-
GUAM-ROTA-TINIAN-SAIPAN-
501 AM CHST SUN JUL 19 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM SUNDAY
THROUGH 600 PM MONDAY
TODAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............3 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WATER TEMPERATURE
IPAN BUOY..........83 DEGREES.
MAX HEAT INDEX.........AROUND 102.
WINDS...............SOUTH TO SOUTHWEST AT 5 TO 10 MPH.
TONIGHT
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............2 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
WINDS...............SOUTHEAST TO SOUTH AT 5 TO 10 MPH.
MONDAY
RIP CURRENT RISK.....LOW *.
SURF HEIGHT
NORTH FACING REEFS............2 TO 4 FEET.
EAST FACING REEFS............2 TO 4 FEET.
SOUTH FACING REEFS............2 TO 3 FEET.
WEST FACING REEFS............2 TO 4 FEET.
SWELL/PERIOD
PRIMARY SWELL................SOUTHWEST AT 2 TO 3 FEET.
PRIMARY PERIOD...............8 SECONDS.
SECONDARY SWELL..............EAST AT AROUND 2 FEET.
SECONDARY PERIOD.............9 SECONDS.
MAX HEAT INDEX.........AROUND 101.
WINDS...............SOUTHEAST AT AROUND 10 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
LOW TIDE 1.3 FEET AT 5:37 AM SUNDAY
HIGH TIDE 2.3 FEET AT 10:46 AM SUNDAY
LOW TIDE 0.6 FEET AT 5:25 PM SUNDAY
HIGH TIDE 2.6 FEET AT 12:04 AM MONDAY
LOW TIDE 1.1 FEET AT 6:33 AM MONDAY
HIGH TIDE 2.1 FEET AT 12:00 PM MONDAY
LOW TIDE 0.9 FEET AT 6:06 PM MONDAY
AT ROTA ISLAND...
LOW TIDE 1.2 FEET AT 5:31 AM SUNDAY
HIGH TIDE 2.2 FEET AT 10:43 AM SUNDAY
LOW TIDE 0.5 FEET AT 5:19 PM SUNDAY
HIGH TIDE 2.4 FEET AT 12:01 AM MONDAY
LOW TIDE 1.0 FEET AT 6:27 AM MONDAY
HIGH TIDE 2.0 FEET AT 11:57 AM MONDAY
LOW TIDE 0.9 FEET AT 6:00 PM MONDAY
AT TINIAN ISLAND...
LOW TIDE 0.4 FEET AT 5:14 AM SUNDAY
HIGH TIDE 1.7 FEET AT 10:44 AM SUNDAY
LOW TIDE 0.2 FEET AT 5:02 PM SUNDAY
HIGH TIDE 1.9 FEET AT 12:02 AM MONDAY
LOW TIDE 0.3 FEET AT 6:10 AM MONDAY
HIGH TIDE 1.5 FEET AT 11:58 AM MONDAY
LOW TIDE 0.3 FEET AT 5:43 PM MONDAY
AT TANAPAG HARBOR, SAIPAN...
LOW TIDE 1.0 FEET AT 6:01 AM SUNDAY
HIGH TIDE 1.8 FEET AT 11:05 AM SUNDAY
LOW TIDE 0.3 FEET AT 5:33 PM SUNDAY
HIGH TIDE 2.3 FEET AT 12:25 AM MONDAY
LOW TIDE 0.8 FEET AT 6:56 AM MONDAY
HIGH TIDE 1.6 FEET AT 12:22 PM MONDAY
LOW TIDE 0.7 FEET AT 6:13 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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