791
FZPQ50 PGUM 030600
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Wed Sep 3 2025

.DISCUSSION...There is a low risk of rip currents along all reefs.
Surf and swell are expected to remain low through the end of the
week. The lightning risk for Guam and Rota has diminished and is
not anticipated to return until the weekend. The lightning risk for
Tinian and Saipan is expected to return Thursday as moderate and
remain through the weekend.

$$

GUZ001-MPZ001>003-032000-
Guam-Rota-Tinian-Saipan-
400 PM ChST Wed Sep 3 2025

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

.TONIGHT...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............2 to 4 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 1 to 2 feet.
      Primary period...............8 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Winds...............East at 10 to 15 mph.

.THURSDAY...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............2 to 4 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 1 to 3 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 100.
Winds...............East at 10 to 15 mph.

.THURSDAY NIGHT...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............2 to 4 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 3 feet.
      Primary period...............8 seconds.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.7 feet at 11:06 PM Wednesday
High tide  2.1 feet at  3:35 AM Thursday
Low  tide  0.1 feet at 11:06 AM Thursday
High tide  2.3 feet at  6:40 PM Thursday
Low  tide  1.6 feet at 11:49 PM Thursday
High tide  2.2 feet at  4:41 AM Friday

At Rota Island...
Low  tide  1.6 feet at 11:00 PM Wednesday
High tide  2.0 feet at  3:32 AM Thursday
Low  tide  0.1 feet at 11:00 AM Thursday
High tide  2.1 feet at  6:37 PM Thursday
Low  tide  1.5 feet at 11:43 PM Thursday
High tide  2.1 feet at  4:38 AM Friday

At Tinian Island...
Low  tide  1.3 feet at  9:54 PM Wednesday
High tide  1.5 feet at  2:18 AM Thursday
Low  tide -0.2 feet at 10:43 AM Thursday
High tide  1.5 feet at  6:35 PM Thursday
Low  tide  1.3 feet at 10:42 PM Thursday
High tide  1.6 feet at  3:26 AM Friday

At Tanapag Harbor, Saipan...
Low  tide  1.6 feet at 10:40 PM Wednesday
High tide  1.9 feet at  3:08 AM Thursday
Low  tide  0.0 feet at 11:10 AM Thursday
High tide  2.0 feet at  7:00 PM Thursday
Low  tide  1.6 feet at 11:28 PM Thursday
High tide  2.0 feet at  4:31 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.

$$