201
FZPQ50 PGUM 081900
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
500 AM ChST Sat Aug 9 2025

.DISCUSSION...There will be a low risk of rip currents along all
reefs through the weekend. A moderate risk of lightning will begin
on Sunday.

$$

GUZ001-MPZ001>003-091000-
Guam-Rota-Tinian-Saipan-
500 AM ChST Sat Aug 9 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 2 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............2 to 4 feet.
      East  facing reefs............3 to 4 feet.
      South facing reefs............2 to 4 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............2 to 4 feet.
      East  facing reefs............3 to 4 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 3 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 101.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.5 feet at  6:33 AM Saturday
Low  tide -0.2 feet at  1:47 PM Saturday
High tide  2.5 feet at  8:51 PM Saturday
Low  tide  1.6 feet at  2:12 AM Sunday
High tide  2.6 feet at  7:18 AM Sunday
Low  tide -0.1 feet at  2:26 PM Sunday
High tide  2.6 feet at  9:18 PM Sunday

At Rota Island...
High tide  2.4 feet at  6:30 AM Saturday
Low  tide -0.2 feet at  1:41 PM Saturday
High tide  2.4 feet at  8:48 PM Saturday
Low  tide  1.5 feet at  2:06 AM Sunday
High tide  2.5 feet at  7:15 AM Sunday
Low  tide -0.1 feet at  2:20 PM Sunday
High tide  2.4 feet at  9:15 PM Sunday

At Tinian Island...
High tide  1.8 feet at  5:27 AM Saturday
Low  tide -0.3 feet at  1:23 PM Saturday
High tide  1.6 feet at  8:47 PM Saturday
Low  tide  1.3 feet at  1:20 AM Sunday
High tide  1.8 feet at  6:19 AM Sunday
Low  tide -0.2 feet at  2:00 PM Sunday
High tide  1.6 feet at  9:07 PM Sunday

At Tanapag Harbor, Saipan...
High tide  2.1 feet at  6:21 AM Saturday
Low  tide -0.4 feet at  1:57 PM Saturday
High tide  2.2 feet at  9:20 PM Saturday
Low  tide  1.5 feet at  2:22 AM Sunday
High tide  2.1 feet at  7:14 AM Sunday
Low  tide -0.3 feet at  2:37 PM Sunday
High tide  2.2 feet at  9:46 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.

$$