558
FZPQ50 PGUM 120556
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
356 PM ChST Mon May 12 2025

.DISCUSSION...There will be a moderate risk of rip currents along
north and east facing reefs of the Marianas through the middle of
this week. A secondary swell will arrive in the region tonight, which
should allow surf along north and east facing reefs to rise by a
foot. The risk of rip currents is expected to remain moderate through
the middle of the week before falling near the end of the week.

$$

GUZ001-MPZ001>003-122200-
Guam-Rota-Tinian-Saipan-
356 PM ChST Mon May 12 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at 1 to 3 feet.
      Secondary period.............11 seconds.
Water Temperature
      Ritidian buoy.......... 85 Degrees.
Winds...............East at 10 to 20 mph.

.TUESDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at 1 to 3 feet.
      Secondary period.............11 seconds.
Max Heat Index.........Around 95.
Winds...............East at 15 to 20 mph.

.TUESDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............4 to 6 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at 2 to 3 feet.
      Secondary period.............11 seconds.
Winds...............East at 10 to 20 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
High tide  2.3 feet at  8:42 PM Monday
Low  tide  1.6 feet at  2:00 AM Tuesday
High tide  2.3 feet at  6:54 AM Tuesday
Low  tide -0.1 feet at  2:06 PM Tuesday
High tide  2.4 feet at  9:24 PM Tuesday
Low  tide  1.7 feet at  2:42 AM Wednesday

At Rota Island...
High tide  2.2 feet at  8:39 PM Monday
Low  tide  1.5 feet at  1:54 AM Tuesday
High tide  2.2 feet at  6:51 AM Tuesday
Low  tide -0.1 feet at  2:00 PM Tuesday
High tide  2.2 feet at  9:21 PM Tuesday
Low  tide  1.6 feet at  2:36 AM Wednesday

At Tinian Island...
High tide  1.6 feet at  8:42 PM Monday
Low  tide  1.4 feet at  1:12 AM Tuesday
High tide  1.7 feet at  5:54 AM Tuesday
Low  tide -0.1 feet at  1:48 PM Tuesday
High tide  1.7 feet at  9:36 PM Tuesday
Low  tide  1.5 feet at  2:00 AM Wednesday

At Tanapag Harbor, Saipan...
High tide  2.0 feet at  9:05 PM Monday
Low  tide  1.6 feet at  1:41 AM Tuesday
High tide  2.0 feet at  6:38 AM Tuesday
Low  tide -0.2 feet at  2:16 PM Tuesday
High tide  2.0 feet at  9:51 PM Tuesday
Low  tide  1.7 feet at  2:29 AM Wednesday

* 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. If caught in a
rip current, swim parallel to the beach rather than against the
current.

$$