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FZPQ50 PGUM 051832
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
432 AM ChST Mon Oct 6 2025

.DISCUSSION...A low risk of rip currents along all reefs today is
expected to become moderate along east facing reefs tonight. There
will also be a moderate risk of lightning the rest of this week.

$$

GUZ001-MPZ001>003-060945-
Guam-Rota-Tinian-Saipan-
432 AM ChST Mon Oct 6 2025

36 hour Surf Zone Forecast for the Marianas from 600 AM Monday
through 600 PM Tuesday

.TODAY...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............2 to 4 feet.
      South facing reefs............Around 1 foot.
      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 100.
Winds...............South at 10 mph.

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............Around 1 foot.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 4 feet.
      Primary period...............8 seconds.
Winds...............Northeast at 15 mph.

.TUESDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 5 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 99.
Winds...............Southeast at 20 mph shifting to the south 10
                    to 20 mph in the afternoon.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.4 feet at  6:27 AM Monday
Low  tide  0.3 feet at 12:44 PM Monday
High tide  2.5 feet at  6:58 PM Monday
Low  tide  0.4 feet at  1:15 AM Tuesday
High tide  2.5 feet at  7:23 AM Tuesday
Low  tide  0.5 feet at  1:28 PM Tuesday
High tide  2.5 feet at  7:24 PM Tuesday

At Rota Island...
High tide  2.2 feet at  6:24 AM Monday
Low  tide  0.3 feet at 12:38 PM Monday
High tide  2.4 feet at  6:55 PM Monday
Low  tide  0.4 feet at  1:09 AM Tuesday
High tide  2.3 feet at  7:20 AM Tuesday
Low  tide  0.5 feet at  1:22 PM Tuesday
High tide  2.4 feet at  7:21 PM Tuesday

At Tinian Island...
High tide  1.5 feet at  5:41 AM Monday
Low  tide  0.2 feet at 12:03 PM Monday
High tide  1.6 feet at  6:20 PM Monday
Low  tide  0.3 feet at 12:42 AM Tuesday
High tide  1.5 feet at  6:48 AM Tuesday
Low  tide  0.5 feet at 12:45 PM Tuesday
High tide  1.7 feet at  6:42 PM Tuesday

At Tanapag Harbor, Saipan...
High tide  2.1 feet at  6:35 AM Monday
Low  tide  0.3 feet at 12:48 PM Monday
High tide  2.2 feet at  7:09 PM Monday
Low  tide  0.4 feet at  1:16 AM Tuesday
High tide  2.2 feet at  7:35 AM Tuesday
Low  tide  0.5 feet at  1:35 PM Tuesday
High tide  2.2 feet at  7:33 PM 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.

$$