FZPQ50 PGUM 261750

SRFGUM



Surf Zone Forecast for the Mariana Islands

National Weather Service Tiyan GU

Issued by National Weather Service Honolulu HI

350 AM ChST Fri Jun 27 2025



.DISCUSSION...There will be a moderate risk of rip currents along

east and south facing reefs of the Marianas for the next few days. 

For all islands, there will be a moderate risk for lightning into 

the weekend.



$$



GUZ001-MPZ001-270900-

Guam-Rota-

350 AM ChST Fri Jun 27 2025



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

through 600 PM Saturday



.TODAY...

Rip Current Risk.....Moderate *. 

Surf Height

      North facing reefs............2 to 4 feet. 

      East  facing reefs............5 to 7 feet. 

      South facing reefs............3 to 5 feet. 

      West  facing reefs............1 to 2 feet. 

Swell/Period

      Primary swell................East at 3 to 6 feet. 

      Primary period...............8 seconds. 

Water Temperature

      Ritidian buoy..........86 Degrees. 

Max Heat Index.........Around 100. 

Winds...............Southeast at 10 to 15 mph. 



.TONIGHT...

Rip Current Risk.....Moderate *. 

Surf Height

      North facing reefs............2 to 4 feet. 

      East  facing reefs............5 to 7 feet. 

      South facing reefs............3 to 5 feet. 

      West  facing reefs............1 to 2 feet. 

Swell/Period

      Primary swell................East at 4 to 6 feet. 

      Primary period...............8 seconds. 

Winds...............South at around 10 mph. 



.SATURDAY...

Rip Current Risk.....Moderate *. 

Surf Height

      North facing reefs............2 to 4 feet. 

      East  facing reefs............4 to 6 feet. 

      South facing reefs............4 to 6 feet. 

      West  facing reefs............2 to 4 feet. 

Swell/Period

      Primary swell................East at 4 to 6 feet. 

      Primary period...............8 seconds. 

Max Heat Index.........Around 100. 

Winds...............South at around 10 mph. 





Tide information for the next 36 hours...



At Apra Harbor, Guam...

High tide  2.7 feet at  7:36 AM Friday

Low  tide -0.5 feet at  3:13 PM Friday

High tide  2.6 feet at 10:38 PM Friday

Low  tide  1.8 feet at  3:53 AM Saturday

High tide  2.6 feet at  8:26 AM Saturday

Low  tide -0.3 feet at  3:59 PM Saturday



At Rota Island...

High tide  2.5 feet at  7:33 AM Friday

Low  tide -0.5 feet at  3:07 PM Friday

High tide  2.5 feet at 10:35 PM Friday

Low  tide  1.7 feet at  3:47 AM Saturday

High tide  2.4 feet at  8:23 AM Saturday

Low  tide -0.3 feet at  3:53 PM 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.

MPZ002-003-270900-

Tinian-Saipan-

350 AM ChST Fri Jun 27 2025



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

through 600 PM Saturday



.TODAY...

Rip Current Risk.....Moderate *. 

Surf Height

      North facing reefs............2 to 4 feet. 

      East  facing reefs............5 to 7 feet. 

      South facing reefs............3 to 5 feet. 

      West  facing reefs............1 to 2 feet. 

Swell/Period

      Primary swell................East at 5 to 6 feet. 

      Primary period...............8 seconds. 

Water Temperature

      Ritidian buoy..........86 Degrees. 

Max Heat Index.........Around 101. 

Winds...............Southeast at 10 to 15 mph. 



.TONIGHT...

Rip Current Risk.....Moderate *. 

Surf Height

      North facing reefs............2 to 4 feet. 

      East  facing reefs............5 to 7 feet. 

      South facing reefs............3 to 5 feet. 

      West  facing reefs............1 to 2 feet. 

Swell/Period

      Primary swell................East at 5 to 6 feet. 

      Primary period...............8 seconds. 

Winds...............Southeast at 10 to 15 mph. 



.SATURDAY...

Rip Current Risk.....Moderate *. 

Surf Height

      North facing reefs............2 to 3 feet. 

      East  facing reefs............5 to 7 feet. 

      South facing reefs............3 to 5 feet. 

      West  facing reefs............2 to 3 feet. 

Swell/Period

      Primary swell................East at 5 to 7 feet. 

      Primary period...............8 seconds. 

Max Heat Index.........Around 101. 

Winds...............Southeast at around 10 mph in the morning 

                    becoming light. 





Tide information for the next 36 hours...



At Tinian Island...

High tide  2.0 feet at  7:34 AM Friday

Low  tide -0.2 feet at  2:50 PM Friday

High tide  1.9 feet at 10:36 PM Friday

Low  tide  0.6 feet at  3:30 AM Saturday

High tide  1.9 feet at  8:24 AM Saturday

Low  tide -0.1 feet at  3:36 PM Saturday



At Tanapag Harbor, Saipan...

High tide  2.2 feet at  7:26 AM Friday

Low  tide -0.7 feet at  3:19 PM Friday

High tide  2.4 feet at 11:08 PM Friday

Low  tide  1.7 feet at  4:20 AM Saturday

High tide  2.1 feet at  8:23 AM Saturday

Low  tide -0.5 feet at  4:05 PM 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.



$$

