Surf Forecast
Issued by NWS Tiyan, Guam

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FZPQ50 PGUM 041816
SRFGUM

Surf Zone Forecast for the Mariana Islands
National Weather Service Tiyan GU
416 AM ChST Thu Jun 5 2025

.DISCUSSION...A moderate risk of rip currents is expected along
east facing reefs for much of the week. A moderate risk of lightning
is expected through this weekend.
$$

GUZ001-MPZ001>003-051100-
Guam-Rota-Tinian-Saipan-
416 AM ChST Thu Jun 5 2025

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

.TODAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 3 to 4 feet.
      Primary period...............8 seconds.
Water Temperature
      Ritidian buoy..........85 Degrees.
Max Heat Index.........Around 99.
Winds...............Southeast at 10 to 15 mph.

.TONIGHT...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 4 feet.
      Primary period...............8 seconds.
Winds...............Southeast at 10 to 15 mph.

.FRIDAY...
Rip Current Risk.....Moderate *.
Surf Height
      North facing reefs............2 to 4 feet.
      East  facing reefs............3 to 5 feet.
      South facing reefs............1 to 2 feet.
      West  facing reefs............Around 1 foot.
Swell/Period
      Primary swell................East at 2 to 4 feet.
      Primary period...............8 seconds.
Max Heat Index.........Around 99.
Winds...............Southeast at 10 to 20 mph.


Tide information for the next 36 hours...

At Apra Harbor, Guam...
Low  tide  1.0 feet at 10:12 AM Thursday
High tide  1.9 feet at  4:06 PM Thursday
Low  tide  1.2 feet at  9:18 PM Thursday
High tide  2.4 feet at  3:48 AM Friday
Low  tide  0.7 feet at 10:54 AM Friday
High tide  2.0 feet at  5:24 PM Friday

At Rota Island...
Low  tide  0.9 feet at 10:06 AM Thursday
High tide  1.7 feet at  4:03 PM Thursday
Low  tide  1.1 feet at  9:12 PM Thursday
High tide  2.3 feet at  3:45 AM Friday
Low  tide  0.7 feet at 10:48 AM Friday
High tide  1.8 feet at  5:21 PM Friday

At Tinian Island...
Low  tide  0.6 feet at  9:54 AM Thursday
High tide  1.2 feet at  3:30 PM Thursday
Low  tide  0.8 feet at  8:42 PM Thursday
High tide  1.7 feet at  3:06 AM Friday
Low  tide  0.3 feet at 10:30 AM Friday
High tide  1.2 feet at  5:06 PM Friday

At Tanapag Harbor, Saipan...
Low  tide  0.7 feet at 10:30 AM Thursday
High tide  1.4 feet at  4:31 PM Thursday
Low  tide  1.0 feet at  9:16 PM Thursday
High tide  2.1 feet at  3:55 AM Friday
Low  tide  0.4 feet at 11:02 AM Friday
High tide  1.5 feet at  5:48 PM Friday

* 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.

$$