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FZPQ50 PGUM 021845
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
445 AM ChST Fri Oct 3 2025

.DISCUSSION...There will be a low risk of rip currents along all reefs
of the Marianas through the end of next week. There will also be a
moderate risk of lightning this afternoon near Guam and Saturday
through Tuesday spreading through the area.

$$

GUZ001-MPZ001>003-030945-
Guam-Rota-Tinian-Saipan-
445 AM ChST Fri Oct 3 2025

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

.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............2 to 4 feet.
Swell/Period
      Primary swell................East at 2 to 3 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............9 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Max Heat Index.........Around 103.
Winds...............Light and variable.

.TONIGHT...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............Around 1 foot.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................Northeast at 2 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............9 seconds.
Winds...............Light and variable.

.SATURDAY...
Rip Current Risk.....Low *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................Northeast at 2 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............9 seconds.
Max Heat Index.........Around 101.
Winds...............Light and variable.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.1 feet at 10:23 AM Friday
High tide  2.3 feet at  5:45 PM Friday
Low  tide  1.3 feet at 11:24 PM Friday
High tide  2.1 feet at  4:27 AM Saturday
Low  tide  0.1 feet at 11:14 AM Saturday
High tide  2.4 feet at  6:10 PM Saturday
Low  tide  1.0 feet at 12:00 AM Sunday

At Rota Island...
Low  tide  0.1 feet at 10:17 AM Friday
High tide  2.1 feet at  5:42 PM Friday
Low  tide  1.2 feet at 11:18 PM Friday
High tide  1.9 feet at  4:24 AM Saturday
Low  tide  0.1 feet at 11:08 AM Saturday
High tide  2.2 feet at  6:07 PM Saturday
Low  tide  1.0 feet at 11:54 PM Saturday

At Tinian Island...
Low  tide -0.1 feet at  9:54 AM Friday
High tide  1.5 feet at  5:24 PM Friday
Low  tide  1.0 feet at 10:31 PM Friday
High tide  1.4 feet at  3:17 AM Saturday
Low  tide  0.0 feet at 10:39 AM Saturday
High tide  1.5 feet at  5:42 PM Saturday
Low  tide  0.8 feet at 11:14 PM Saturday

At Tanapag Harbor, Saipan...
Low  tide  0.1 feet at 10:29 AM Friday
High tide  2.1 feet at  5:57 PM Friday
Low  tide  1.3 feet at 11:16 PM Friday
High tide  1.8 feet at  4:28 AM Saturday
Low  tide  0.1 feet at 11:16 AM Saturday
High tide  2.1 feet at  6:21 PM Saturday
Low  tide  1.0 feet at 11:53 PM Saturday

* 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.

$$