997
FZPQ50 PGUM 010645
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
445 PM ChST Sat Nov 1 2025

.DISCUSSION...
There will be a moderate risk for rip currents along north and east
facing reefs through at least the weekend. A trade-wind swell will
move into the region after the weekend bringing the chance for
hazardous surf and a high risk for rip currents next week. Later in
the week a tropical disturbance may keep surf and risk of rip
currents elevated. There will be a moderate risk for Sunday night
through Thursday.

$$

GUZ001-MPZ001>003-012100-
Guam-Rota-Tinian-Saipan-
445 PM ChST Sat Nov 1 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................Northeast at 4 to 6 feet.
      Primary period...............9 seconds.
      Secondary swell..............Northwest at around 2 feet.
      Secondary period.............10 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Winds...............East at 10 to 15 mph.

.SUNDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................Northeast at 4 to 6 feet.
      Primary period...............9 seconds.
      Secondary swell..............Northwest around 2 feet.
      Secondary period.............12 seconds.
Max Heat Index.........Around 103.
Winds...............East at 10 to 20 mph.

.SUNDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................Northeast at 4 to 6 feet.
      Primary period...............9 seconds.
      Secondary swell..............North around 2 feet.
      Secondary period.............11 seconds.
Winds...............East at 10 to 20 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.9 feet at 10:54 PM Saturday
High tide  1.8 feet at  4:17 AM Sunday
Low  tide  0.4 feet at 10:29 AM Sunday
High tide  2.3 feet at  5:07 PM Sunday
Low  tide  0.5 feet at 11:32 PM Sunday
High tide  2.0 feet at  5:29 AM Monday

At Rota Island...
Low  tide  0.8 feet at 10:48 PM Saturday
High tide  1.7 feet at  4:14 AM Sunday
Low  tide  0.3 feet at 10:23 AM Sunday
High tide  2.2 feet at  5:04 PM Sunday
Low  tide  0.5 feet at 11:26 PM Sunday
High tide  1.9 feet at  5:26 AM Monday

At Tinian Island...
Low  tide  0.7 feet at 10:15 PM Saturday
High tide  1.2 feet at  3:17 AM Sunday
Low  tide  0.2 feet at  9:43 AM Sunday
High tide  1.6 feet at  4:25 PM Sunday
Low  tide  0.4 feet at 10:56 PM Sunday
High tide  1.3 feet at  4:43 AM Monday

At Tanapag Harbor, Saipan...
Low  tide  0.9 feet at 10:55 PM Saturday
High tide  1.7 feet at  4:28 AM Sunday
Low  tide  0.4 feet at 10:33 AM Sunday
High tide  2.2 feet at  5:14 PM Sunday
Low  tide  0.6 feet at 11:29 PM Sunday
High tide  1.9 feet at  5:40 AM Monday

* 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.

$$