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FZPQ50 PGUM 230600
SRFGUM

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

.DISCUSSION...A low risk of rip currents continues through Tuesday.
The rip risk is expected to increase to moderate along east facing
reefs Tuesday night through the end of the week. There will be a
moderate risk for lightning through the week.

$$

GUZ001-MPZ001>003-232100-
Guam-Rota-Tinian-Saipan-
400 PM ChST Mon Jun 23 2025

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

.TONIGHT...
Rip Current Risk.....Low  *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............2 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..........87 Degrees.
Winds...............Southeast at around 10 mph.

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

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


Tide information for the next 36 hours...

At Apra Harbor, Guam...
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
Low  tide  2.0 feet at  1:04 AM Wednesday

At Rota Island...
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
Low  tide  1.8 feet at 12:58 AM Wednesday

At Tinian Island...
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
Low  tide  1.6 feet at 11:52 PM Tuesday

At Tanapag Harbor, Saipan...
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  tide  1.9 feet at 12:53 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.

$$