FZPQ50 PGUM 220044 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 1044 AM ChST Sat Aug 22 2026 .DISCUSSION...There will be a high risk of rip currents along east facing reefs of the Marianas, and along north facing reefs of Tinian and Saipan. There will also be a moderate risk of lightning through all of next week as a monsoon surge brings scattered showers and isolated thunderstorms. $$ GUZ001-MPZ001-221545- Guam-Rota- 1044 AM ChST Sat Aug 22 2026 ...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG EAST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 915 AM Saturday through 600 PM Sunday .REST OF TODAY... Rip Current Risk.....High *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............7 to 9 feet. South facing reefs............4 to 6 feet. West facing reefs............4 to 6 feet. Swell/Period Primary swell................Southwest at 1 to 4 feet. Primary period...............8 seconds. Secondary swell..............East at 3 to 6 feet. Secondary period.............8 seconds. Water Temperature Real Time Ocean Forecast System...86 Degrees. Max Heat Index.........Around 103. Winds...............Southwest at 15 to 20 mph. .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............7 to 9 feet. South facing reefs............4 to 6 feet. West facing reefs............4 to 6 feet. Swell/Period Primary swell................Southwest at 4 feet. Primary period...............8 seconds. Secondary swell..............East at 5 to 6 feet. Secondary period.............9 seconds. Winds...............Southwest at 15 to 20 mph. .SUNDAY... Rip Current Risk.....High *. Surf Height North facing reefs............4 to 6 feet. East facing reefs............6 to 9 feet. South facing reefs............4 to 6 feet. West facing reefs............4 to 6 feet. Swell/Period Primary swell................Southwest at 3 to 4 feet. Primary period...............9 seconds. Secondary swell..............Southeast at 4 to 6 feet. Secondary period.............9 seconds. Max Heat Index.........Around 102. Winds...............Southwest at 15 to 20 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 0.3 feet at 9:21 AM Saturday High tide 2.1 feet at 5:34 PM Saturday Low tide 1.8 feet at 10:11 PM Saturday High tide 2.0 feet at 2:22 AM Sunday Low tide 0.3 feet at 10:21 AM Sunday High tide 2.1 feet at 6:18 PM Sunday Low tide 1.7 feet at 11:12 PM Sunday At Rota Island... High tide 1.9 feet at 5:31 PM Saturday Low tide 1.7 feet at 10:05 PM Saturday High tide 1.9 feet at 2:19 AM Sunday Low tide 0.2 feet at 10:15 AM Sunday High tide 2.0 feet at 6:15 PM Sunday Low tide 1.6 feet at 11:06 PM Sunday High tide 1.9 feet at 3:34 AM Monday $$ MPZ002-003-221545- Tinian-Saipan- 1044 AM ChST Sat Aug 22 2026 ...HIGH SURF ADVISORY IN EFFECT UNTIL 5 PM CHST SUNDAY ALONG NORTH FACING REEFS... ...HIGH RISK OF RIP CURRENTS THROUGH SUNDAY AFTERNOON ALONG NORTH AND EAST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 915 AM Saturday through 600 PM Sunday .REST OF TODAY... Rip Current Risk.....High *. Surf Height North facing reefs............7 to 10 feet. East facing reefs............7 to 10 feet. South facing reefs............4 to 6 feet. West facing reefs............4 to 6 feet. Swell/Period Primary swell................Southwest at 2 to 4 feet. Primary period...............9 seconds. Secondary swell..............Northeast at 4 to 7 feet. Secondary period.............9 seconds. Water Temperature Tanapag buoy..........86 Degrees. Max Heat Index.........Around 102. Winds...............West at 15 to 20 mph. .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............7 to 10 feet. East facing reefs............7 to 10 feet. South facing reefs............4 to 6 feet. West facing reefs............4 to 6 feet. Swell/Period Primary swell................Southwest at 2 to 5 feet. Primary period...............9 seconds. Secondary swell..............Northeast at 5 to 7 feet. Secondary period.............9 seconds. Winds...............Southwest at 15 to 20 mph. .SUNDAY... Rip Current Risk.....High *. Surf Height North facing reefs............6 to 8 feet. East facing reefs............6 to 8 feet. South facing reefs............7 to 9 feet. West facing reefs............7 to 9 feet. Swell/Period Primary swell................Southwest at around 4 feet. Primary period...............9 seconds. Secondary swell..............Southwest at 4 to 7 feet. Secondary period.............9 seconds. Max Heat Index.........Around 102. Winds...............Southwest at 15 to 20 mph. Tide information for the next 36 hours... At Tinian Island... High tide 1.5 feet at 5:32 PM Saturday Low tide 0.6 feet at 9:48 PM Saturday High tide 1.5 feet at 2:20 AM Sunday Low tide 0.1 feet at 9:58 AM Sunday High tide 1.6 feet at 6:16 PM Sunday Low tide 0.6 feet at 10:49 PM Sunday High tide 1.5 feet at 3:35 AM Monday At Tanapag Harbor, Saipan... Low tide 0.2 feet at 9:40 AM Saturday High tide 1.8 feet at 6:20 PM Saturday Low tide 1.7 feet at 9:38 PM Saturday High tide 1.9 feet at 1:43 AM Sunday Low tide 0.1 feet at 10:33 AM Sunday High tide 1.9 feet at 6:54 PM Sunday Low tide 1.7 feet at 10:40 PM Sunday * 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. $$