351
FZPQ50 PGUM 250752
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
552 PM ChST Sun Jan 25 2026

.DISCUSSION...Northerly swell continues to produce hazardous surf
and a high risk of rip currents along west and north facing reefs.
Surf decreases slightly along west and north facing reefs through
Monday afternoon as northerly swell subsides and northeast trade
swell becomes the primary swell. This may allow for surf rip risk to
fall below hazardous levels along west and north facing reefs by
Monday evening and begin to increase surf along east facing reefs.
However, another pulse of northwest to north swell looks to arrive
late Monday night or Tuesday, possibly causing surf and rip risk to
increase to hazardous levels along west and north facing reefs around
midweek. A moderate risk of rip currents continues along east facing
reefs through midweek. There will be a moderate risk for lightning
through Wednesday.

$$

GUZ001-MPZ001>003-252300-
Guam-Rota-Tinian-Saipan-
552 PM ChST Sun Jan 25 2026

...HIGH SURF ADVISORY IN EFFECT UNTIL 6 PM CHST MONDAY ALONG WEST AND
NORTH FACING REEFS...
...HIGH RISK OF RIP CURRENTS THROUGH MONDAY AFTERNOON ALONG WEST AND
NORTH FACING REEFS...

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

.TONIGHT...
Rip Current Risk.....High *.
Surf Height
      North facing reefs............9 to 11 feet.
      East  facing reefs............5 to 7 feet.
      South facing reefs............2 to 3 feet.
      West  facing reefs............7 to 9 feet.
Swell/Period
      Primary swell................North at 8 to 9 feet.
      Primary period...............9 seconds.
      Secondary swell..............East at around 2 feet.
      Secondary period.............8 seconds.
Water Temperature
      Ipan buoy..........82 Degrees.
Winds...............5 to 10 mph. For Tinian and Saipan, increasing to
                    10 to 20 mph with occasional gusts to 30 mph
 around midnight.

.MONDAY...
Rip Current Risk.....High *.
Surf Height
      North facing reefs............8 to 10 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 3 feet.
      West  facing reefs............7 to 9 feet.
Swell/Period
      Primary swell................North at 7 to 9 feet.
      Primary period...............8 seconds.
      Secondary swell..............East at around 2 feet.
      Secondary period.............8 seconds.
Max Heat Index.........Around 95.
Winds...............For Guam and Rota, northeast at 10 to 15 mph with
gusts to 25 mph. For Tinian and Saipan, northeast
at 20 to 25 mph.

.MONDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............7 to 8 feet.
      East  facing reefs............6 to 8 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............6 to 8 feet.
Swell/Period
      Primary swell................Northeast at around 6 feet.
      Primary period...............8 seconds.
      Secondary swell..............North at 2 to 4 feet.
      Secondary period.............11 seconds.
Winds...............For Guam and Rota, northeast at 10 to 15 mph with
gusts to 25 mph. For Tinian and Saipan, northeast
at 15 to 25 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  0.3 feet at  6:55 PM Sunday
High tide  1.6 feet at 12:55 AM Monday
Low  tide  0.9 feet at  6:18 AM Monday
High tide  2.2 feet at 12:33 PM Monday
Low  tide  0.0 feet at  7:57 PM Monday
High tide  1.6 feet at  2:50 AM Tuesday
Low  tide  1.2 feet at  7:19 AM Tuesday

At Rota Island...
Low  tide  0.3 feet at  6:49 PM Sunday
High tide  1.5 feet at 12:52 AM Monday
Low  tide  0.8 feet at  6:12 AM Monday
High tide  2.1 feet at 12:30 PM Monday
Low  tide  0.0 feet at  7:51 PM Monday
High tide  1.5 feet at  2:47 AM Tuesday
Low  tide  1.1 feet at  7:13 AM Tuesday

At Tinian Island...
Low  tide  0.1 feet at  6:32 PM Sunday
High tide  1.2 feet at 12:53 AM Monday
Low  tide  0.3 feet at  5:55 AM Monday
High tide  1.6 feet at 12:31 PM Monday
Low  tide  0.0 feet at  7:34 PM Monday
High tide  1.2 feet at  2:48 AM Tuesday
Low  tide  0.4 feet at  6:56 AM Tuesday

At Tanapag Harbor, Saipan...
Low  tide  0.5 feet at  7:10 PM Sunday
High tide  1.6 feet at  1:19 AM Monday
Low  tide  1.1 feet at  6:24 AM Monday
High tide  2.2 feet at 12:38 PM Monday
Low  tide  0.2 feet at  8:14 PM Monday
High tide  1.6 feet at  3:32 AM Tuesday
Low  tide  1.4 feet at  7:30 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.

$$