744
FZPQ50 PGUM 130706
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
506 PM ChST Thu Nov 13 2025

.DISCUSSION...A moderate risk of rip currents is expected along north
and east facing reefs of the Marianas through Friday, before tapering
down to low along north facing reefs beginning Friday night. Surf may
rebuild along north and east reefs beginning early next week as trade
swell strengthens.

$$

GUZ001-MPZ001>003-132000-
Guam-Rota-Tinian-Saipan-
506 PM ChST Thu Nov 13 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............2 to 3 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............11 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Winds...............East at 10 to 15 mph.

.FRIDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............3 to 5 feet.
      East  facing reefs............4 to 6 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............2 to 3 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at around 2 feet.
      Secondary period.............11 seconds.
Max Heat Index.........Around 100.
Winds...............East at 10 to 15 mph.

.FRIDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
Winds...............East at 10 to 15 mph.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.1 feet at  9:50 PM Thursday
High tide  1.5 feet at  2:26 AM Friday
Low  tide  0.3 feet at  9:05 AM Friday
High tide  2.2 feet at  4:15 PM Friday
Low  tide  0.8 feet at 10:42 PM Friday
High tide  1.6 feet at  4:06 AM Saturday

At Rota Island...
Low  tide  1.0 feet at  9:44 PM Thursday
High tide  1.5 feet at  2:23 AM Friday
Low  tide  0.3 feet at  8:59 AM Friday
High tide  2.0 feet at  4:12 PM Friday
Low  tide  0.7 feet at 10:36 PM Friday
High tide  1.5 feet at  4:03 AM Saturday

At Tinian Island...
Low  tide  0.9 feet at  9:09 PM Thursday
High tide  1.2 feet at  1:18 AM Friday
Low  tide  0.1 feet at  8:27 AM Friday
High tide  1.6 feet at  3:36 PM Friday
Low  tide  0.6 feet at 10:03 PM Friday
High tide  1.1 feet at  2:56 AM Saturday

At Tanapag Harbor, Saipan...
Low  tide  1.1 feet at 10:08 PM Thursday
High tide  1.5 feet at  2:38 AM Friday
Low  tide  0.5 feet at  9:15 AM Friday
High tide  2.2 feet at  4:23 PM Friday
Low  tide  0.8 feet at 10:50 PM Friday
High tide  1.6 feet at  4:27 AM 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.

$$