FZPQ50 PGUM 040704 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 504 PM ChST Mon May 4 2026 .DISCUSSION...There is a high risk of rip currents along east-facing reefs due to an elevated ENE trade swell, and a moderate risk along north-facing reefs. A surge in trade winds, increased trade swell, and associated surf will remain elevated throughout the week, maintaining a high risk of rip currents along east-facing reefs. $$ GUZ001-MPZ001>003-042215- Guam-Rota-Tinian-Saipan- 504 PM ChST Mon May 4 2026 ...HIGH RISK OF RIP CURRENTS THROUGH THURSDAY AFTERNOON ALONG EAST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 PM Monday through 600 AM Wednesday .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............5 to 7 feet. East facing reefs............7 to 9 feet. South facing reefs............2 to 4 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................East at 5 to 7 feet. Primary period...............8 seconds. Water Temperature Tanapag buoy.......... 83 Degrees. Winds...............East at 15 to 20 mph. .TUESDAY... Rip Current Risk.....High *. Surf Height North facing reefs............5 to 7 feet. East facing reefs............7 to 9 feet. South facing reefs............2 to 4 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................East at 5 to 7 feet. Primary period...............8 seconds. Max Heat Index.........Around 100. Winds...............Breezy. East at 15 to 25 mph. .TUESDAY NIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............5 to 7 feet. East facing reefs............7 to 10 feet. South facing reefs............2 to 4 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................East at 6 to 7 feet. Primary period...............8 seconds. Winds...............Breezy. East at 15 to 25 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.3 feet at 10:36 PM Monday Low tide 1.7 feet at 3:59 AM Tuesday High tide 2.2 feet at 8:26 AM Tuesday Low tide -0.1 feet at 3:53 PM Tuesday High tide 2.2 feet at 11:23 PM Tuesday Low tide 1.7 feet at 4:40 AM Wednesday High tide 2.1 feet at 8:59 AM Wednesday At Rota Island... High tide 2.1 feet at 10:33 PM Monday Low tide 1.6 feet at 3:53 AM Tuesday High tide 2.0 feet at 8:23 AM Tuesday Low tide -0.1 feet at 3:47 PM Tuesday High tide 2.1 feet at 11:20 PM Tuesday Low tide 1.6 feet at 4:34 AM Wednesday High tide 2.0 feet at 8:56 AM Wednesday At Tinian Island... High tide 1.7 feet at 10:34 PM Monday Low tide 0.6 feet at 3:36 AM Tuesday High tide 1.6 feet at 8:24 AM Tuesday Low tide 0.0 feet at 3:30 PM Tuesday High tide 1.7 feet at 11:21 PM Tuesday Low tide 0.6 feet at 4:17 AM Wednesday High tide 1.6 feet at 8:57 AM Wednesday At Tanapag Harbor, Saipan... High tide 2.1 feet at 11:19 PM Monday Low tide 1.7 feet at 3:56 AM Tuesday High tide 1.9 feet at 7:57 AM Tuesday Low tide -0.1 feet at 3:58 PM Tuesday High tide 2.1 feet at 12:11 AM Wednesday Low tide 1.8 feet at 4:50 AM Wednesday High tide 1.9 feet at 8:21 AM Wednesday * 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. $$