753
FZPQ50 PGUM 241704
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
304 AM ChST Tue Nov 25 2025

.DISCUSSION...The elevated east trade swell and associated surf
will continue across the region through midweek, and a high risk of
rip currents is expected along east facing reefs of the Marianas
through at least Wednesday night. A moderate risk of rip currents is
expected along north facing reefs for at least the next few days and
along south facing reefs through tonight, which will then decrease
to low with the gradual diminishing of the trade swell and
associated wrap-around effects this week.

$$

GUZ001-MPZ001>003-250800-
Guam-Rota-Tinian-Saipan-
304 AM ChST Tue Nov 25 2025

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

36 hour Surf Zone Forecast for the Marianas from 600 AM Monday
through 600 PM Wednesday

.TODAY...
Rip Current Risk.....High. Pounding surf will produce life
                     threatening rip currents at reefs and beaches.
Surf Height
      North facing reefs............4 to 5 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Max Heat Index.........Around 100.
Winds...............East at 15 to 20 mph.

.TONIGHT...
Rip Current Risk.....High. *
Surf Height
      North facing reefs............4 to 5 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 seconds.
Winds...............East at 10 to 20 mph.

.WEDNESDAY...
Rip Current Risk.....High. *
Surf Height
      North facing reefs............4 to 5 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 seconds.
Max Heat Index.........Around 100.
Winds...............East at around 15 mph.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide -0.4 feet at  4:19 AM Tuesday
High tide  2.0 feet at 12:08 PM Tuesday
Low  tide  1.6 feet at  5:21 PM Tuesday
High tide  1.8 feet at  9:15 PM Tuesday
Low  tide -0.3 feet at  5:03 AM Wednesday
High tide  2.0 feet at 12:59 PM Wednesday
Low  tide  1.5 feet at  6:27 PM Wednesday

At Rota Island...
Low  tide -0.4 feet at  4:13 AM Tuesday
High tide  1.9 feet at 12:05 PM Tuesday
Low  tide  1.5 feet at  5:15 PM Tuesday
High tide  1.7 feet at  9:12 PM Tuesday
Low  tide -0.3 feet at  4:57 AM Wednesday
High tide  1.9 feet at 12:56 PM Wednesday
Low  tide  1.4 feet at  6:21 PM Wednesday

At Tinian Island...
Low  tide -0.3 feet at  4:14 AM Tuesday
High tide  1.6 feet at 12:56 PM Tuesday
Low  tide  1.4 feet at  5:05 PM Tuesday
High tide  1.5 feet at  8:12 PM Tuesday
Low  tide -0.2 feet at  4:56 AM Wednesday
High tide  1.6 feet at  1:28 PM Wednesday
Low  tide  1.3 feet at  6:14 PM Wednesday

At Tanapag Harbor, Saipan...
Low  tide -0.2 feet at  4:25 AM Tuesday
High tide  2.1 feet at 12:38 PM Tuesday
Low  tide  1.7 feet at  5:37 PM Tuesday
High tide  1.9 feet at  8:48 PM Tuesday
Low  tide -0.1 feet at  5:10 AM Wednesday
High tide  2.1 feet at  1:19 PM Wednesday
Low  tide  1.7 feet at  6:58 PM 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.

$$