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FZPQ50 PGUM 230541
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
341 PM ChST Sun Nov 23 2025

.DISCUSSION...The elevated east trade swell is expected to persist
into midweek, and the high risk of rip currents is now expected
along east facing reefs of the Marianas through at least Wednesday
night. A moderate risk of rip currents is expected along north and
south facing reefs for the next few days, as significantly higher
trade swell wraps around the islands and produces elevated surf along
south exposures.

$$

GUZ001-MPZ001>003-232045-
Guam-Rota-Tinian-Saipan-
341 PM ChST Sun Nov 23 2025

...HIGH RISK OF RIP CURRENTS THROUGH LATE WEDNESDAY NIGHT
ALONG EAST FACING REEFS...

36 hour Surf Zone Forecast for the Marianas from 600 PM Sunday
through 600 AM Tuesday

.TONIGHT...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.

Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............7 to 10 feet.
      South facing reefs............3 to 5 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 8 feet.
      Primary period...............9 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Winds...............East at 15 to 20 mph.

.MONDAY...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............7 to 10 feet.
      South facing reefs............3 to 5 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 8 feet.
      Primary period...............9 seconds.
Max Heat Index.........Around 100.
Winds...............East at 15 to 20 mph.

.MONDAY NIGHT...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............7 to 10 feet.
      South facing reefs............3 to 5 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 8 feet.
      Primary period...............9 seconds.
Winds...............East at 15 to 20 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  1.9 feet at  8:03 PM Sunday
Low  tide -0.5 feet at  3:37 AM Monday
High tide  2.0 feet at 11:17 AM Monday
Low  tide  1.5 feet at  4:27 PM Monday
High tide  1.9 feet at  8:36 PM Monday
Low  tide -0.4 feet at  4:19 AM Tuesday

At Rota Island...
High tide  1.8 feet at  8:00 PM Sunday
Low  tide -0.5 feet at  3:31 AM Monday
High tide  1.9 feet at 11:14 AM Monday
Low  tide  1.4 feet at  4:21 PM Monday
High tide  1.8 feet at  8:33 PM Monday
Low  tide -0.4 feet at  4:13 AM Tuesday

At Tinian Island...
High tide  1.6 feet at  6:57 PM Sunday
Low  tide -0.3 feet at  3:32 AM Monday
High tide  1.6 feet at 12:13 PM Monday
Low  tide  1.5 feet at  4:06 PM Monday
High tide  1.6 feet at  7:32 PM Monday
Low  tide -0.3 feet at  4:14 AM Tuesday

At Tanapag Harbor, Saipan...
High tide  2.0 feet at  7:45 PM Sunday
Low  tide -0.2 feet at  3:45 AM Monday
High tide  2.1 feet at 11:52 AM Monday
Low  tide  1.8 feet at  4:25 PM Monday
High tide  1.9 feet at  8:14 PM Monday
Low  tide -0.2 feet at  4:25 AM Tuesday

* 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.

$$