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FZPQ50 PGUM 281859
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
459 AM ChST Sat Nov 29 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs of the Marianas through Sunday, which
could become high Sunday night. There will also be a moderate risk
of lightning through Tuesday.

$$

GUZ001-MPZ001>003-291000-
Guam-Rota-Tinian-Saipan-
459 AM ChST Sat Nov 29 2025

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

.TODAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............11 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Max Heat Index.........Around 101.
Winds...............East at 10 to 20 mph.

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............12 seconds.
Winds...............East at 10 to 20 mph.

.SUNDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 5 to 7 feet.
      Primary period...............9 seconds.
      Secondary swell..............North at around 3 feet.
      Secondary period.............12 seconds.
Max Heat Index.........Around 101.
Winds...............Breezy. East at 15 to 25 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.2 feet at  7:41 AM Saturday
High tide  2.2 feet at  2:56 PM Saturday
Low  tide  0.9 feet at  9:34 PM Saturday
High tide  1.5 feet at  2:35 AM Sunday
Low  tide  0.4 feet at  8:41 AM Sunday
High tide  2.3 feet at  3:29 PM Sunday
Low  tide  0.5 feet at 10:19 PM Sunday

At Rota Island...
Low  tide  0.2 feet at  7:35 AM Saturday
High tide  2.1 feet at  2:53 PM Saturday
Low  tide  0.8 feet at  9:28 PM Saturday
High tide  1.4 feet at  2:32 AM Sunday
Low  tide  0.4 feet at  8:35 AM Sunday
High tide  2.1 feet at  3:26 PM Sunday
Low  tide  0.4 feet at 10:13 PM Sunday

At Tinian Island...
Low  tide  0.1 feet at  7:11 AM Saturday
High tide  1.6 feet at  2:29 PM Saturday
Low  tide  0.7 feet at  9:08 PM Saturday
High tide  1.1 feet at  1:46 AM Sunday
Low  tide  0.3 feet at  7:58 AM Sunday
High tide  1.7 feet at  2:50 PM Sunday
Low  tide  0.4 feet at  9:50 PM Sunday

At Tanapag Harbor, Saipan...
Low  tide  0.4 feet at  7:50 AM Saturday
High tide  2.2 feet at  3:06 PM Saturday
Low  tide  1.0 feet at  9:48 PM Saturday
High tide  1.5 feet at  2:44 AM Sunday
Low  tide  0.6 feet at  8:50 AM Sunday
High tide  2.2 feet at  3:37 PM Sunday
Low  tide  0.6 feet at 10:26 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.

$$