341
FZPQ50 PGUM 221819
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
419 AM ChST Mon Jun 23 2025

.DISCUSSION...
A low risk of rip currents continues through the middle of this
week. There`s a moderate risk for lightning, mainly near western
coastlines.

$$

GUZ001-MPZ001>003-230930-
Guam-Rota-Tinian-Saipan-
419 AM ChST Mon Jun 23 2025

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

.TODAY...
Rip Current Risk.....Low  *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 to 4 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 1 to 3 feet.
      Primary period...............8 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Max Heat Index.........Around 102.
Winds...............Southeast at 10 to 15 mph.

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

.TUESDAY...
Rip Current Risk.....Low  *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 to 4 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 1 to 3 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 103.
Winds...............East at 10 to 15 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide -0.3 feet at 11:49 AM Monday
High tide  2.5 feet at  7:15 PM Monday
Low  tide  1.9 feet at 11:57 PM Monday
High tide  2.8 feet at  5:05 AM Tuesday
Low  tide -0.5 feet at 12:41 PM Tuesday
High tide  2.7 feet at  8:12 PM Tuesday

At Rota Island...
Low  tide -0.3 feet at 11:43 AM Monday
High tide  2.4 feet at  7:12 PM Monday
Low  tide  1.8 feet at 11:51 PM Monday
High tide  2.6 feet at  5:02 AM Tuesday
Low  tide -0.5 feet at 12:35 PM Tuesday
High tide  2.5 feet at  8:09 PM Tuesday

At Tinian Island...
Low  tide -0.4 feet at 11:26 AM Monday
High tide  1.6 feet at  7:12 PM Monday
Low  tide  1.5 feet at 10:47 PM Monday
High tide  2.1 feet at  4:07 AM Tuesday
Low  tide -0.6 feet at 12:16 PM Tuesday
High tide  1.8 feet at  8:11 PM Tuesday

At Tanapag Harbor, Saipan...
Low  tide -0.6 feet at 11:50 AM Monday
High tide  2.2 feet at  7:40 PM Monday
Low  tide  1.8 feet at 11:36 PM Monday
High tide  2.4 feet at  4:48 AM Tuesday
Low  tide -0.8 feet at 12:42 PM Tuesday
High tide  2.3 feet at  8:38 PM Tuesday

* 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.

$$