034
FZPQ50 PGUM 011925
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
525 AM ChST Wed Jul 2 2025

.DISCUSSION...There will be a low risk of rip currents along all reefs
of the Marianas through Thursday, which will then become moderate
along east facing reefs. There will also be a moderate risk of
lightning through the weekend. Surf along east facing reefs could
build by 2 feet by Friday.

$$

GUZ001-MPZ001>003-021030-
Guam-Rota-Tinian-Saipan-
525 AM ChST Wed Jul 2 2025

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

.TODAY...
Rip Current Risk.....Low  *.
Surf Height
      North facing reefs............1 to 3 feet.
      East  facing reefs............3 to 4 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............2 to 4 feet.
Swell/Period
      Primary swell................East at 3 feet.
      Primary period...............8 seconds.
      Secondary swell..............Southwest at around 2 feet.
      Secondary period.............6 seconds.
Water Temperature
      Ritidian buoy..........86 Degrees.
Max Heat Index.........Around 99.
Winds...............South at around 10 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............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................Southeast at 1 to 3 feet.
      Primary period...............8 seconds.
      Secondary swell..............Southwest at around 2 feet.
      Secondary period.............6 seconds.
Winds...............Southeast at around 10 mph in the evening
                    becoming light.

.THURSDAY...
Rip Current Risk.....Low  *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 4 feet.
      South facing reefs............2 to 4 feet.
      West  facing reefs............1 to 3 feet.
Swell/Period
      Primary swell................East at 1 to 3 feet.
      Primary period...............8 seconds.
      Secondary swell..............West at 1 to 2 feet.
      Secondary period.............6 seconds.
Max Heat Index.........Around 101.
Winds...............South at around 10 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.3 feet at  7:32 AM Wednesday
High tide  1.9 feet at 12:28 PM Wednesday
Low  tide  0.9 feet at  6:44 PM Wednesday
High tide  2.5 feet at  1:36 AM Thursday
Low  tide  1.1 feet at  8:26 AM Thursday
High tide  1.8 feet at  2:01 PM Thursday
Low  tide  1.2 feet at  7:27 PM Thursday

At Rota Island...
Low  tide  1.2 feet at  7:26 AM Wednesday
High tide  1.8 feet at 12:25 PM Wednesday
Low  tide  0.9 feet at  6:38 PM Wednesday
High tide  2.3 feet at  1:33 AM Thursday
Low  tide  1.0 feet at  8:20 AM Thursday
High tide  1.7 feet at  1:58 PM Thursday
Low  tide  1.1 feet at  7:21 PM Thursday

At Tinian Island...
Low  tide  0.8 feet at  7:25 AM Wednesday
High tide  1.2 feet at 11:59 AM Wednesday
Low  tide  0.5 feet at  6:08 PM Wednesday
High tide  1.7 feet at  1:09 AM Thursday
Low  tide  0.6 feet at  8:20 AM Thursday
High tide  1.1 feet at  1:46 PM Thursday
Low  tide  0.8 feet at  6:44 PM Thursday

At Tanapag Harbor, Saipan...
Low  tide  1.0 feet at  8:04 AM Wednesday
High tide  1.4 feet at 12:48 PM Wednesday
Low  tide  0.6 feet at  6:47 PM Wednesday
High tide  2.2 feet at  1:48 AM Thursday
Low  tide  0.8 feet at  8:53 AM Thursday
High tide  1.3 feet at  2:12 PM Thursday
Low  tide  0.9 feet at  7:20 PM Thursday

* 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.

$$