457
FZPQ50 PGUM 030540
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
340 PM ChST Thu Jul 3 2025

.DISCUSSION...A moderate risk of rip currents is expected along east
facing reefs of the Marianas for much of the week, with potential for
the risk to become moderate along west facing reefs once a secondary
westerly swell arrives in the first half of next week.

$$

GUZ001-MPZ001>003-032000-
Guam-Rota-Tinian-Saipan-
340 PM ChST Thu Jul 3 2025

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

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 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 3 feet.
      Primary period...............9 seconds.
Water Temperature
      Ritidian buoy..........87 Degrees.
Winds...............Southeast at around 10 mph.

.FRIDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 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 3 feet.
      Primary period...............9 seconds.
Max Heat Index.........Around 100.
Winds...............Southeast at around 10 mph.

.FRIDAY NIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 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 3 feet.
      Primary period...............9 seconds.
Winds...............Southeast at around 10 mph in the evening
                    becoming light.

Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.2 feet at  7:27 PM Thursday
High tide  2.4 feet at  2:02 AM Friday
Low  tide  0.8 feet at  9:15 AM Friday
High tide  1.9 feet at  3:45 PM Friday
Low  tide  1.5 feet at  8:18 PM Friday
High tide  2.4 feet at  2:30 AM Saturday

At Rota Island...
Low  tide  1.1 feet at  7:21 PM Thursday
High tide  2.3 feet at  1:59 AM Friday
Low  tide  0.8 feet at  9:09 AM Friday
High tide  1.7 feet at  3:42 PM Friday
Low  tide  1.4 feet at  8:12 PM Friday
High tide  2.3 feet at  2:27 AM Saturday

At Tinian Island...
Low  tide  0.8 feet at  6:44 PM Thursday
High tide  1.7 feet at  1:28 AM Friday
Low  tide  0.4 feet at  9:07 AM Friday
High tide  1.1 feet at  3:42 PM Friday
Low  tide  1.0 feet at  7:24 PM Friday
High tide  1.7 feet at  1:48 AM Saturday

At Tanapag Harbor, Saipan...
Low  tide  0.9 feet at  7:20 PM Thursday
High tide  2.1 feet at  2:08 AM Friday
Low  tide  0.5 feet at  9:38 AM Friday
High tide  1.4 feet at  4:16 PM Friday
Low  tide  1.2 feet at  7:55 PM Friday
High tide  2.1 feet at  2:27 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. If caught in a
rip current, swim parallel to the beach rather than against the
current.

$$