FZPQ50 PGUM 211827 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 427 AM ChST Sun Mar 22 2026 .DISCUSSION...There will be a high risk of rip currents along north and east facing reefs today, which should become moderate tonight, then could become high again Monday, otherwise it will be moderate. $$ GUZ001-MPZ001>003-220930- Guam-Rota-Tinian-Saipan- 427 AM ChST Sun Mar 22 2026 ...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST THIS AFTERNOON ALONG NORTH FACING REEFS... ...HIGH RISK OF RIP CURRENTS UNTIL 4 PM CHST THIS AFTERNOON ALONG NORTH AND EAST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 AM Sunday through 600 PM Monday .TODAY... Rip Current Risk.....High *. Surf Height North facing reefs............8 to 10 feet. East facing reefs............8 to 10 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 4 feet. Swell/Period Primary swell................Northeast at 6 to 8 feet. Primary period...............8 seconds. Secondary swell..............Northeast at around 3 feet. Secondary period.............14 seconds. Water Temperature Ipan buoy..........81 Degrees. Max Heat Index.........Around 91. Winds...............Breezy. Northeast at 15 to 25 mph. .TONIGHT... Rip Current Risk.....Moderate *. Surf Height North facing reefs............6 to 8 feet. East facing reefs............7 to 9 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 4 feet. Swell/Period Primary swell................Northeast at 5 to 7 feet. Primary period...............8 seconds. Secondary swell..............Northeast at around 3 feet. Secondary period.............12 seconds. Winds...............Northeast at 15 to 20 mph. .MONDAY... Rip Current Risk.....Moderate *. Surf Height North facing reefs............5 to 7 feet. East facing reefs............6 to 8 feet. South facing reefs............1 to 3 feet. West facing reefs............2 to 4 feet. Swell/Period Primary swell................Northeast at 7 to 9 feet. Primary period...............8 seconds. Secondary swell..............Northeast at around 3 feet. Secondary period.............12 seconds. Max Heat Index.........Around 96. Winds...............Breezy. Northeast at 15 to 25 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.4 feet at 9:12 AM Sunday Low tide -0.2 feet at 4:07 PM Sunday High tide 2.3 feet at 10:48 PM Sunday Low tide 1.2 feet at 4:22 AM Monday High tide 2.4 feet at 9:44 AM Monday Low tide -0.3 feet at 4:58 PM Monday High tide 2.1 feet at 12:02 AM Tuesday At Rota Island... High tide 2.3 feet at 9:09 AM Sunday Low tide -0.2 feet at 4:01 PM Sunday High tide 2.1 feet at 10:45 PM Sunday Low tide 1.1 feet at 4:16 AM Monday High tide 2.2 feet at 9:41 AM Monday Low tide -0.3 feet at 4:52 PM Monday High tide 2.0 feet at 11:59 PM Monday At Tinian Island... High tide 1.8 feet at 9:10 AM Sunday Low tide -0.1 feet at 3:44 PM Sunday High tide 1.7 feet at 10:46 PM Sunday Low tide 0.4 feet at 3:59 AM Monday High tide 1.7 feet at 9:42 AM Monday Low tide -0.1 feet at 4:35 PM Monday High tide 1.6 feet at 12:00 AM Tuesday At Tanapag Harbor, Saipan... High tide 2.1 feet at 9:09 AM Sunday Low tide -0.1 feet at 4:08 PM Sunday High tide 2.1 feet at 11:18 PM Sunday Low tide 1.3 feet at 4:24 AM Monday High tide 2.1 feet at 9:35 AM Monday Low tide -0.2 feet at 5:01 PM Monday High tide 2.1 feet at 12:39 AM Tuesday * 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. $$