039
FZPQ50 PGUM 270600
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Thu Nov 27 2025

.DISCUSSION...A moderate risk of rip currents is expected to persist
along east facing reefs for at least the next several days. Rip risk
may become moderate along north facing reefs this weekend, as a
northerly swell produced by distant synoptic systems moves through
the region. A moderate risk of lightning is expected for Saturday
through Tuesday as an incoming trough moves through the region.

$$

GUZ001-MPZ001>003-272045-
Guam-Rota-Tinian-Saipan-
400 PM ChST Thu Nov 27 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............2 to 4 feet.
      East  facing reefs............5 to 8 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 5 to 6 feet.
      Primary period...............9 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Winds...............East at 15 to 20 mph.

.FRIDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............5 to 7 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 99.
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............4 to 6 feet.
      South facing reefs............1 to 3 feet.
      West  facing reefs............1 to 2 feet.
Swell/Period
      Primary swell................East at 3 to 5 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  1.4 feet at  7:39 PM Thursday
High tide  1.6 feet at 11:15 PM Thursday
Low  tide  0.0 feet at  6:44 AM Friday
High tide  2.1 feet at  2:23 PM Friday
Low  tide  1.2 feet at  8:43 PM Friday
High tide  1.5 feet at 12:48 AM Saturday
Low  tide  0.2 feet at  7:41 AM Saturday

At Rota Island...
Low  tide  1.3 feet at  7:33 PM Thursday
High tide  1.5 feet at 11:12 PM Thursday
Low  tide  0.0 feet at  6:38 AM Friday
High tide  2.0 feet at  2:20 PM Friday
Low  tide  1.1 feet at  8:37 PM Friday
High tide  1.4 feet at 12:45 AM Saturday
Low  tide  0.2 feet at  7:35 AM Saturday

At Tinian Island...
Low  tide  1.2 feet at  7:23 PM Thursday
High tide  1.3 feet at 10:21 PM Thursday
Low  tide -0.1 feet at  6:25 AM Friday
High tide  1.6 feet at  2:11 PM Friday
Low  tide  1.0 feet at  8:21 PM Friday
High tide  1.1 feet at 12:00 AM Saturday
Low  tide  0.1 feet at  7:11 AM Saturday

At Tanapag Harbor, Saipan...
Low  tide  1.5 feet at  8:10 PM Thursday
High tide  1.6 feet at 11:01 PM Thursday
Low  tide  0.2 feet at  6:54 AM Friday
High tide  2.2 feet at  2:33 PM Friday
Low  tide  1.3 feet at  9:06 PM Friday
High tide  1.5 feet at 12:50 AM Saturday
Low  tide  0.4 feet at  7:50 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.

$$