916
FZPQ50 PGUM 160518
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
318 PM ChST Sun Nov 16 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs through at least midweek. The east
swell is expected to begin to build around Tuesday night, likely
increasing the rip current risk to high along east facing reefs by
Thursday.

$$

GUZ001-MPZ001>003-162030-
Guam-Rota-Tinian-Saipan-
318 PM ChST Sun Nov 16 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Winds...............East at 10 to 20 mph.

.MONDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 101.
Winds...............East at 10 to 20 mph.

.MONDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
Winds...............East at 10 to 20 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.2 feet at 11:59 PM Sunday
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

At Rota Island...
Low  tide  0.2 feet at 11:53 PM Sunday
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

At Tinian Island...
Low  tide  0.2 feet at 11:26 PM Sunday
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

At Tanapag Harbor, Saipan...
Low  tide  0.3 feet at 11:58 PM Sunday
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 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.

$$