365
FZPQ50 PGUM 300850 AAA
SRFGUM

Surf Zone Forecast for the Mariana Islands...UPDATED
National Weather Service Tiyan GU
650 PM ChST Sun Nov 30 2025

.DISCUSSION...Trade swell and a pulse of long-period north-northeast
swell are producing hazardous surf along north facing reefs and a
high risk of rip currents along north and east facing reefs. This
expected through at least Monday afternoon for north facing reefs,
with the high rip risk continuing through at least Wednesday
afternoon for east facing reefs. A moderate risk of lightning
continues through Monday night.

$$

GUZ001-MPZ001>003-302300-
Guam-Rota-Tinian-Saipan-
650 PM ChST Sun Nov 30 2025

...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST MONDAY ALONG NORTH
FACING REEFS...
...HIGH RIP CURRENT RISK IN EFFECT THROUGH WEDNESDAY AFTERNOON ALONG
NORTH AND EAST FACING REEFS...

36 hour Surf Zone Forecast for the Marianas from 637 PM Sunday
through 600 AM Tuesday

.REST OF TONIGHT...
Rip Current Risk.....High *.
Surf Height
      North facing reefs............7 to 9 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............4 to 6 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at 3 to 5 feet.
      Secondary period.............13 to 14 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Winds...............East at 10 to 20 mph.

.MONDAY...
Rip Current Risk.....High. *.
Surf Height
      North facing reefs............7 to 9 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............3 to 4 feet.
      West  facing reefs............4 to 6 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at 3 to 5 feet.
      Secondary period.............14 seconds.
Max Heat Index.........Around 101.
Winds...............East at 15 to 20 mph.

.MONDAY NIGHT...
Rip Current Risk.....High *.
Surf Height
      North facing reefs............7 to 8 feet.
      East  facing reefs............7 to 9 feet.
      South facing reefs............3 to 4 feet.
      West  facing reefs............4 to 6 feet.
Swell/Period
      Primary swell................East at 4 to 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............Northeast at 3 to 5 feet.
      Secondary period.............12 to 13 seconds.
Winds...............East at 10 to 20 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.5 feet at 10:19 PM Sunday
High tide  1.7 feet at  4:15 AM Monday
Low  tide  0.7 feet at  9:43 AM Monday
High tide  2.3 feet at  4:02 PM Monday
Low  tide  0.0 feet at 11:02 PM Monday
High tide  1.9 feet at  5:37 AM Tuesday
Low  tide  1.0 feet at 10:45 AM Tuesday

At Rota Island...
Low  tide  0.4 feet at 10:13 PM Sunday
High tide  1.6 feet at  4:12 AM Monday
Low  tide  0.7 feet at  9:37 AM Monday
High tide  2.2 feet at  3:59 PM Monday
Low  tide  0.0 feet at 10:56 PM Monday
High tide  1.8 feet at  5:34 AM Tuesday
Low  tide  0.9 feet at 10:39 AM Tuesday

At Tinian Island...
Low  tide  0.4 feet at  9:50 PM Sunday
High tide  1.1 feet at  3:31 AM Monday
Low  tide  0.6 feet at  8:47 AM Monday
High tide  1.8 feet at  3:14 PM Monday
Low  tide  0.0 feet at 10:33 PM Monday
High tide  1.2 feet at  5:06 AM Tuesday
Low  tide  0.8 feet at  9:38 AM Tuesday

At Tanapag Harbor, Saipan...
Low  tide  0.6 feet at 10:26 PM Sunday
High tide  1.6 feet at  4:36 AM Monday
Low  tide  0.8 feet at  9:50 AM Monday
High tide  2.2 feet at  4:06 PM Monday
Low  tide  0.1 feet at 11:04 PM Monday
High tide  1.9 feet at  5:53 AM Tuesday
Low  tide  1.1 feet at 10:46 AM 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. Rip currents
will be life threatening. If caught in a rip current, swim parallel
to the beach rather than against the current.

$$