887
FZPQ50 PGUM 221852
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
452 AM ChST Sat Aug 23 2025

.DISCUSSION...There will be a low risk of rip currents along all
reefs of the Marianas through Tuesday. There will also be a moderate
risk of lightning through at least Tuesday.

$$

GUZ001-MPZ001>003-231000-
Guam-Rota-Tinian-Saipan-
452 AM ChST Sat Aug 23 2025

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

.TODAY...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 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.
Water Temperature
      Ritidian buoy..........86 Degrees.
Max Heat Index.........Around 101.
Winds...............East at around 10 mph.

.TONIGHT...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 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 around 10 mph.

.SUNDAY...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 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 around 10 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.5 feet at  6:48 AM Saturday
Low  tide -0.1 feet at  1:54 PM Saturday
High tide  2.5 feet at  8:40 PM Saturday
Low  tide  1.3 feet at  2:19 AM Sunday
High tide  2.5 feet at  7:36 AM Sunday
Low  tide  0.1 feet at  2:32 PM Sunday
High tide  2.4 feet at  9:04 PM Sunday

At Rota Island...
High tide  2.4 feet at  6:45 AM Saturday
Low  tide -0.1 feet at  1:48 PM Saturday
High tide  2.3 feet at  8:37 PM Saturday
Low  tide  1.2 feet at  2:13 AM Sunday
High tide  2.4 feet at  7:33 AM Sunday
Low  tide  0.1 feet at  2:26 PM Sunday
High tide  2.3 feet at  9:01 PM Sunday

At Tinian Island...
High tide  1.8 feet at  5:50 AM Saturday
Low  tide -0.2 feet at  1:24 PM Saturday
High tide  1.6 feet at  8:21 PM Saturday
Low  tide  1.0 feet at  1:40 AM Sunday
High tide  1.7 feet at  6:44 AM Sunday
Low  tide  0.0 feet at  2:02 PM Sunday
High tide  1.6 feet at  8:43 PM Sunday

At Tanapag Harbor, Saipan...
High tide  2.1 feet at  6:52 AM Saturday
Low  tide -0.2 feet at  2:03 PM Saturday
High tide  2.2 feet at  8:58 PM Saturday
Low  tide  1.2 feet at  2:31 AM Sunday
High tide  2.1 feet at  7:45 AM Sunday
Low  tide  0.0 feet at  2:42 PM Sunday
High tide  2.1 feet at  9:25 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.

$$