367
FZPQ50 PGUM 211723
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
323 AM ChST Sat Nov 22 2025

.DISCUSSION...A high risk of rip currents is expected along east
facing reefs of the Marianas through at least Monday night, possibly
longer if conditions warrant. While surf is no longer expected to
sustain hazardous conditions (and in turn, a high rip current risk)
along north facing reefs, surf is expected to hover just below
hazardous criteria, so caution is advised for those venturing out to
the beaches the next several days.

$$

GUZ001-MPZ001>003-220800-
Guam-Rota-Tinian-Saipan-
323 AM ChST Sat Nov 22 2025

...HIGH SURF ADVISORY IS NO LONGER IN EFFECT ALONG NORTH FACING
REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH LATE MONDAY NIGHT ALONG EAST
FACING REEFS...

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

.TODAY...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.
Surf Height
      North facing reefs............6 to 8 feet.
      East  facing reefs............8 to 10 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 5 to 8 feet.
      Primary period...............9 seconds.
      Secondary swell..............North at 2 to 3 feet.
      Secondary period.............11 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Max Heat Index.........Around 100.
Winds...............East at 15 to 20 mph.

.TONIGHT...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.
Surf Height
      North facing reefs............6 to 8 feet.
      East  facing reefs............8 to 10 feet.
      South facing reefs............6 to 8 feet.
      West  facing reefs............4 to 6 feet.
Swell/Period
      Primary swell................Northeast at 5 to 8 feet.
      Primary period...............9 seconds.
      Secondary swell..............North at 2 to 3 feet.
      Secondary period.............11 seconds.
Winds...............Breezy. East at 15 to 25 mph.

.SUNDAY...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............9 to 11 feet.
      South facing reefs............8 to 10 feet.
      West  facing reefs............3 to 5 feet.
Swell/Period
      Primary swell................East at 5 to 8 feet.
      Primary period...............9 seconds.
Max Heat Index.........Around 100.
Winds...............Breezy. East at 15 to 25 mph.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.1 feet at  9:49 AM Saturday
Low  tide  1.5 feet at  3:04 PM Saturday
High tide  2.0 feet at  7:32 PM Saturday
Low  tide -0.5 feet at  3:00 AM Sunday
High tide  2.0 feet at 10:30 AM Sunday
Low  tide  1.5 feet at  3:43 PM Sunday

At Rota Island...
High tide  1.9 feet at  9:46 AM Saturday
Low  tide  1.4 feet at  2:58 PM Saturday
High tide  1.8 feet at  7:29 PM Saturday
Low  tide -0.5 feet at  2:54 AM Sunday
High tide  1.9 feet at 10:27 AM Sunday
Low  tide  1.4 feet at  3:37 PM Sunday

At Tinian Island...
High tide  1.6 feet at 10:28 AM Saturday
Low  tide  1.4 feet at  2:24 PM Saturday
High tide  1.6 feet at  6:25 PM Saturday
Low  tide -0.3 feet at  2:53 AM Sunday
High tide  1.6 feet at 11:22 AM Sunday
Low  tide  1.5 feet at  3:14 PM Sunday

At Tanapag Harbor, Saipan...
High tide  2.1 feet at 10:16 AM Saturday
Low  tide  1.7 feet at  2:58 PM Saturday
High tide  2.0 feet at  7:17 PM Saturday
Low  tide -0.2 feet at  3:09 AM Sunday
High tide  2.1 feet at 11:03 AM Sunday
Low  tide  1.7 feet at  3:37 PM 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.

$$