572
FZPQ50 PGUM 100615
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
415 PM ChST Sun Aug 10 2025

.DISCUSSION...There will be a moderate risk of rip currents along
east facing reefs through Tuesday. The trade-wind swell will then
subside, allowing the surf to fall 1 to 2 feet. This will drop the
rip current risk to low along all reefs. There will be a moderate
risk of lightning through Tuesday for all islands and again on
Wednesday for Guam.

$$

GUZ001-MPZ001>003-102100-
Guam-Rota-Tinian-Saipan-
415 PM ChST Sun Aug 10 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............2 to 4 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 3 to 5 feet.
      Primary period...............8 seconds.
Water Temperature
  Ritidian buoy..........86 Degrees.
Winds...............East at around 10 mph.

.MONDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 3 to 5 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 101.
Winds...............Light and variable becoming east around 10 mph
in the afternoon.

.MONDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 3 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 4 feet.
      Primary period...............8 seconds.
Winds...............East at around 10 mph in the evening
                    becoming light.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.6 feet at  9:18 PM Sunday
Low  tide  1.5 feet at  2:52 AM Monday
High tide  2.6 feet at  8:06 AM Monday
Low  tide  0.0 feet at  3:04 PM Monday
High tide  2.6 feet at  9:44 PM Monday
Low  tide  1.3 feet at  3:36 AM Tuesday

At Rota Island...
High tide  2.4 feet at  9:15 PM Sunday
Low  tide  1.4 feet at  2:46 AM Monday
High tide  2.5 feet at  8:03 AM Monday
Low  tide  0.0 feet at  2:58 PM Monday
High tide  2.5 feet at  9:41 PM Monday
Low  tide  1.2 feet at  3:30 AM Tuesday

At Tinian Island...
High tide  1.6 feet at  9:07 PM Sunday
Low  tide  1.2 feet at  2:12 AM Monday
High tide  1.7 feet at  7:12 AM Monday
Low  tide -0.1 feet at  2:36 PM Monday
High tide  1.6 feet at  9:27 PM Monday
Low  tide  1.0 feet at  3:05 AM Tuesday

At Tanapag Harbor, Saipan...
High tide  2.2 feet at  9:46 PM Sunday
Low  tide  1.3 feet at  3:05 AM Monday
High tide  2.1 feet at  8:09 AM Monday
Low  tide -0.2 feet at  3:14 PM Monday
High tide  2.2 feet at 10:11 PM Monday
Low  tide  1.1 feet at  3:47 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.

$$