900
FZPQ50 PGUM 020600
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Thu Oct 2 2025

.DISCUSSION...There will be a low risk of rip currents along all
reefs for the next several days. There is a moderate risk of
lightning through Friday, and again Saturday night into next week.

$$

GUZ001-MPZ001>003-022100-
Guam-Rota-Tinian-Saipan-
400 PM ChST Thu Oct 2 2025

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

.TONIGHT...
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............1 to 3 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.
Winds...............Light and variable.

.FRIDAY...
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............1 to 3 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.
Max Heat Index.........Around 103.
Winds...............Light and variable.

.FRIDAY NIGHT...
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............1 to 3 feet.
Swell/Period
      Primary swell................Northeast at 2 to 3 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............9 seconds.
Winds...............Light and variable.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.2 feet at  5:16 PM Thursday
Low  tide  1.5 feet at 10:45 PM Thursday
High tide  1.9 feet at  3:12 AM Friday
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

At Rota Island...
High tide  2.0 feet at  5:13 PM Thursday
Low  tide  1.4 feet at 10:39 PM Thursday
High tide  1.8 feet at  3:09 AM Friday
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

At Tinian Island...
High tide  1.4 feet at  5:02 PM Thursday
Low  tide  1.2 feet at  9:47 PM Thursday
High tide  1.4 feet at  1:57 AM Friday
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

At Tanapag Harbor, Saipan...
High tide  2.0 feet at  5:30 PM Thursday
Low  tide  1.5 feet at 10:39 PM Thursday
High tide  1.7 feet at  2:57 AM Friday
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

* 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.

$$