791
FZPQ50 PGUM 140556
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
356 PM ChST Tue Oct 14 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs of the Marianas the next few days, as
distant swells generated by Typhoon Nakri and local Invest 96W affect
the region. Surf is expected to diminish along all reefs once 96W
moves out of the region, and Typhoon Nakri well east of Japan weakens
in the second half of the week. A moderate risk of lightning is
expected the next few days as 96W and the TUTT above continue to
interact.

$$

GUZ001-MPZ001>003-142000-
Guam-Rota-Tinian-Saipan-
356 PM ChST Tue Oct 14 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 4 feet.
      Secondary period.............13 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Winds...............Breezy. Southeast at 15 to 25 mph.

.WEDNESDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 4 feet.
      Secondary period.............12 seconds.
Max Heat Index.........Around 101.
Winds...............Breezy. Southeast at 15 to 25 mph.

.WEDNESDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............5 to 7 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 3 feet.
      Secondary period.............12 seconds.
Winds...............Breezy. East at 15 to 25 mph.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.6 feet at  8:57 PM Tuesday
High tide  1.9 feet at 12:45 AM Wednesday
Low  tide -0.1 feet at  8:39 AM Wednesday
High tide  2.2 feet at  4:30 PM Wednesday
Low  tide  1.4 feet at 10:11 PM Wednesday
High tide  1.8 feet at  2:30 AM Thursday

At Rota Island...
Low  tide  1.5 feet at  8:51 PM Tuesday
High tide  1.8 feet at 12:42 AM Wednesday
Low  tide -0.1 feet at  8:33 AM Wednesday
High tide  2.1 feet at  4:27 PM Wednesday
Low  tide  1.3 feet at 10:05 PM Wednesday
High tide  1.7 feet at  2:27 AM Thursday

At Tinian Island...
Low  tide  1.3 feet at  8:03 PM Tuesday
High tide  1.5 feet at 11:52 PM Tuesday
Low  tide -0.3 feet at  8:14 AM Wednesday
High tide  1.5 feet at  4:04 PM Wednesday
Low  tide  1.1 feet at  9:17 PM Wednesday
High tide  1.4 feet at  1:20 AM Thursday

At Tanapag Harbor, Saipan...
Low  tide  1.6 feet at  9:20 PM Tuesday
High tide  1.8 feet at 12:46 AM Wednesday
Low  tide  0.0 feet at  8:48 AM Wednesday
High tide  2.2 feet at  4:40 PM Wednesday
Low  tide  1.4 feet at 10:23 PM Wednesday
High tide  1.7 feet at  2:30 AM Thursday

* 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.

$$