447
FZPQ50 PGUM 161935
SRFGUM
SURF ZONE FORECAST FOR THE MARIANA ISLANDS
NATIONAL WEATHER SERVICE TIYAN GU
535 AM CHST SUN MAY 17 2026
DISCUSSION
A MODERATE RISK OF RIP CURRENTS ALONG BOTH NORTH AND
EAST-FACING REEFS IS EXPECTED THROUGH EARLY THIS WEEK. SURF WILL
CONTINUE TO INCREASE AS THE TRADE SWELL BUILDS, POTENTIALLY
INTRODUCING A HIGH RIP CURRENT RISK ALONG EAST-FACING REEFS IN THE
NEXT DAY OR TWO.
GUZ001-MPZ001>003-171045-
GUAM-ROTA-TINIAN-SAIPAN-
535 AM CHST SUN MAY 17 2026
36 HOUR SURF ZONE FORECAST FOR THE MARIANAS FROM 600 AM SUNDAY
THROUGH 600 PM MONDAY
TODAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............3 TO 5 FEET.
EAST FACING REEFS............4 TO 6 FEET.
SOUTH FACING REEFS............1 TO 2 FEET.
WEST FACING REEFS............AROUND A FOOT.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
WATER TEMPERATURE
IPAN BUOY.........83 DEGREES.
MAX HEAT INDEX.........AROUND 97.
WINDS...............BREEZY. EAST AT 15 TO 25 MPH.
TONIGHT
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............4 TO 6 FEET.
EAST FACING REEFS............5 TO 7 FEET.
SOUTH FACING REEFS............1 TO 3 FEET.
WEST FACING REEFS............1 TO 2 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 4 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
WINDS...............EAST AT 15 TO 20 MPH.
MONDAY
RIP CURRENT RISK.....MODERATE *.
SURF HEIGHT
NORTH FACING REEFS............5 TO 6 FEET.
EAST FACING REEFS............6 TO 8 FEET.
SOUTH FACING REEFS............2 TO 4 FEET.
WEST FACING REEFS............2 TO 3 FEET.
SWELL/PERIOD
PRIMARY SWELL................EAST AT 5 TO 6 FEET.
PRIMARY PERIOD...............9 SECONDS.
MAX HEAT INDEX.........AROUND 98.
WINDS...............EAST AT 15 TO 20 MPH.
TIDE INFORMATION FOR THE NEXT 36 HOURS...
AT APRA HARBOR, GUAM...
HIGH TIDE 2.7 FEET AT 6:39 AM SUNDAY
LOW TIDE -0.6 FEET AT 1:54 PM SUNDAY
HIGH TIDE 2.7 FEET AT 9:09 PM SUNDAY
LOW TIDE 1.7 FEET AT 2:26 AM MONDAY
HIGH TIDE 2.7 FEET AT 7:19 AM MONDAY
LOW TIDE -0.7 FEET AT 2:44 PM MONDAY
HIGH TIDE 2.7 FEET AT 10:08 PM MONDAY
AT ROTA ISLAND...
HIGH TIDE 2.5 FEET AT 6:36 AM SUNDAY
LOW TIDE -0.5 FEET AT 1:48 PM SUNDAY
HIGH TIDE 2.5 FEET AT 9:06 PM SUNDAY
LOW TIDE 1.6 FEET AT 2:20 AM MONDAY
HIGH TIDE 2.5 FEET AT 7:16 AM MONDAY
LOW TIDE -0.6 FEET AT 2:38 PM MONDAY
HIGH TIDE 2.5 FEET AT 10:05 PM MONDAY
AT TINIAN ISLAND...
HIGH TIDE 2.0 FEET AT 6:37 AM SUNDAY
LOW TIDE -0.2 FEET AT 1:31 PM SUNDAY
HIGH TIDE 2.0 FEET AT 9:07 PM SUNDAY
LOW TIDE 0.6 FEET AT 2:03 AM MONDAY
HIGH TIDE 2.0 FEET AT 7:17 AM MONDAY
LOW TIDE -0.2 FEET AT 2:21 PM MONDAY
HIGH TIDE 2.0 FEET AT 10:06 PM MONDAY
AT TANAPAG HARBOR, SAIPAN...
HIGH TIDE 2.3 FEET AT 6:23 AM SUNDAY
LOW TIDE -0.7 FEET AT 1:59 PM SUNDAY
HIGH TIDE 2.4 FEET AT 9:38 PM SUNDAY
LOW TIDE 1.7 FEET AT 2:32 AM MONDAY
HIGH TIDE 2.3 FEET AT 7:00 AM MONDAY
LOW TIDE -0.8 FEET AT 2:49 PM MONDAY
HIGH TIDE 2.5 FEET AT 10:42 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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