FZPQ50 PGUM 311859 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 459 AM ChST Wed Apr 1 2026 .DISCUSSION...There will be a moderate risk of rip currents along north and east facing reefs and low risk along south and west facing reefs over the next few days, with primary swell from the north to northeast. Over the weekend, easterly trade winds and swell are expected to increase, leading to surf to build along east- facing reefs. $$ GUZ001-MPZ001>003-011000- Guam-Rota-Tinian-Saipan- 459 AM ChST Wed Apr 1 2026 36 hour Surf Zone Forecast for the Marianas from 600 AM Wednesday through 600 PM Thursday .TODAY... Rip Current Risk.....Moderate *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............4 to 6 feet. South facing reefs............1 to 2 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................Northeast at 4 to 6 feet. Primary period...............8 seconds. Secondary swell..............East at around 2 feet. Secondary period.............9 seconds. Water Temperature Tanapag buoy..........82 Degrees. Max Heat Index.........Around 98. Winds...............East at 10 to 20 mph. .TONIGHT... Rip Current Risk.....Moderate *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............4 to 6 feet. South facing reefs............1 to 2 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................Northeast at 4 to 6 feet. Primary period...............8 seconds. Secondary swell..............East at around 2 feet. Secondary period.............10 seconds. Winds...............Northeast at 10 to 20 mph. .THURSDAY... Rip Current Risk.....Moderate *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............4 to 6 feet. South facing reefs............1 to 2 feet. West facing reefs............1 to 3 feet. Swell/Period Primary swell................Northeast at 3 to 5 feet. Primary period...............9 seconds. Secondary swell..............East at around 3 feet. Secondary period.............9 seconds. Max Heat Index.........Around 97. Winds...............Northeast at 10 to 15 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.4 feet at 7:21 AM Wednesday Low tide 0.5 feet at 1:40 PM Wednesday High tide 2.3 feet at 7:34 PM Wednesday Low tide 0.6 feet at 1:46 AM Thursday High tide 2.3 feet at 7:43 AM Thursday Low tide 0.4 feet at 2:13 PM Thursday High tide 2.3 feet at 8:20 PM Thursday At Rota Island... High tide 2.2 feet at 7:18 AM Wednesday Low tide 0.5 feet at 1:34 PM Wednesday High tide 2.1 feet at 7:31 PM Wednesday Low tide 0.6 feet at 1:40 AM Thursday High tide 2.2 feet at 7:40 AM Thursday Low tide 0.3 feet at 2:07 PM Thursday High tide 2.1 feet at 8:17 PM Thursday At Tinian Island... High tide 1.7 feet at 7:19 AM Wednesday Low tide 0.2 feet at 1:17 PM Wednesday High tide 1.7 feet at 7:32 PM Wednesday Low tide 0.2 feet at 1:23 AM Thursday High tide 1.7 feet at 7:41 AM Thursday Low tide 0.1 feet at 1:50 PM Thursday High tide 1.7 feet at 8:18 PM Thursday At Tanapag Harbor, Saipan... High tide 2.2 feet at 7:21 AM Wednesday Low tide 0.5 feet at 1:37 PM Wednesday High tide 2.1 feet at 7:46 PM Wednesday Low tide 0.7 feet at 1:45 AM Thursday High tide 2.1 feet at 7:44 AM Thursday Low tide 0.3 feet at 2:13 PM Thursday High tide 2.1 feet at 8:36 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. Rip currents will be life threatening. If caught in a rip current, swim parallel to the beach rather than against the current. $$