081
FZPQ50 PGUM 161855
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
455 AM ChST Mon Nov 17 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs of the Marianas through Wednesday night,
when it will likely become high. There will also be a moderate risk
of lightning starting Thursday night.

$$

GUZ001-MPZ001>003-171000-
Guam-Rota-Tinian-Saipan-
455 AM ChST Mon Nov 17 2025

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

.TODAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............6 to 8 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.
Water Temperature
      Ritidian buoy..........86 Degrees.
Max Heat Index.........Around 101.
Winds...............East at 10 to 20 mph.

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............5 to 7 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.
Winds...............East at 10 to 20 mph.

.TUESDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............6 to 8 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................Northeast at 4 to 7 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 101.
Winds...............East at 10 to 20 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  1.8 feet at  6:23 AM Monday
Low  tide  1.0 feet at 11:41 AM Monday
High tide  2.2 feet at  5:31 PM Monday
Low  tide  0.0 feet at 12:30 AM Tuesday
High tide  1.9 feet at  7:13 AM Tuesday
Low  tide  1.1 feet at 12:26 PM Tuesday
High tide  2.1 feet at  5:52 PM Tuesday

At Rota Island...
High tide  1.7 feet at  6:20 AM Monday
Low  tide  0.9 feet at 11:35 AM Monday
High tide  2.0 feet at  5:28 PM Monday
Low  tide  0.0 feet at 12:24 AM Tuesday
High tide  1.8 feet at  7:10 AM Tuesday
Low  tide  1.1 feet at 12:20 PM Tuesday
High tide  2.0 feet at  5:49 PM Tuesday

At Tinian Island...
High tide  1.2 feet at  5:47 AM Monday
Low  tide  0.8 feet at 10:38 AM Monday
High tide  1.6 feet at  4:37 PM Monday
Low  tide  0.0 feet at 12:01 AM Tuesday
High tide  1.3 feet at  6:54 AM Tuesday
Low  tide  1.0 feet at 11:18 AM Tuesday
High tide  1.6 feet at  4:54 PM Tuesday

At Tanapag Harbor, Saipan...
High tide  1.8 feet at  6:38 AM Monday
Low  tide  1.1 feet at 11:35 AM Monday
High tide  2.1 feet at  5:35 PM Monday
Low  tide  0.1 feet at 12:30 AM Tuesday
High tide  1.9 feet at  7:29 AM Tuesday
Low  tide  1.3 feet at 12:14 PM Tuesday
High tide  2.1 feet at  5:53 PM 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.

$$