142
FZPQ50 PGUM 100706
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
506 PM ChST Wed Dec 10 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs the next couple of days, which could
then become high for both reefs.

$$

GUZ001-MPZ001>003-102200-
Guam-Rota-Tinian-Saipan-
506 PM ChST Wed Dec 10 2025

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

.TONIGHT...
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...............9 seconds.
      Secondary swell..............North at around 4 feet.
      Secondary period.............10 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Winds...............East at 15 mph.

.THURSDAY...
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.
      Secondary swell..............Northeast at around 4 feet.
      Secondary period.............10 seconds.
Max Heat Index.........Around 97.
Winds...............East at 15 to 20 mph with occasional gusts
to 25 mph.

.THURSDAY NIGHT...
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 5 to 7 feet.
      Primary period...............8 seconds.
Winds...............East at 15 to 25 mph with occasional gusts
to 30 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.3 feet at  6:46 PM Wednesday
High tide  1.7 feet at 10:56 PM Wednesday
Low  tide -0.1 feet at  6:20 AM Thursday
High tide  2.1 feet at  1:52 PM Thursday
Low  tide  1.1 feet at  8:00 PM Thursday
High tide  1.5 feet at 12:19 AM Friday

At Rota Island...
Low  tide  1.2 feet at  6:40 PM Wednesday
High tide  1.6 feet at 10:53 PM Wednesday
Low  tide -0.1 feet at  6:14 AM Thursday
High tide  2.0 feet at  1:49 PM Thursday
Low  tide  1.0 feet at  7:54 PM Thursday
High tide  1.4 feet at 12:16 AM Friday

At Tinian Island...
Low  tide  0.4 feet at  6:23 PM Wednesday
High tide  1.3 feet at 10:54 PM Wednesday
Low  tide  0.0 feet at  5:57 AM Thursday
High tide  1.6 feet at  1:50 PM Thursday
Low  tide  0.4 feet at  7:37 PM Thursday
High tide  1.1 feet at 12:17 AM Friday

At Tanapag Harbor, Saipan...
Low  tide  1.4 feet at  7:17 PM Wednesday
High tide  1.7 feet at 11:09 PM Wednesday
Low  tide  0.1 feet at  6:29 AM Thursday
High tide  2.2 feet at  1:59 PM Thursday
Low  tide  1.2 feet at  8:29 PM Thursday
High tide  1.5 feet at 12:42 AM Friday

* 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.

$$