FZPQ50 PGUM 041745 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 345 AM ChST Wed Aug 5 2026 .DISCUSSION...Hazardous surf continues along west and north facing reefs, and a high rip current risk comtinues along west, north, and east reefs through at least late Saturday afternoon. A moderate risk of lightning is expected for the rest of this week. $$ GUZ001-MPZ001>003-050800- Guam-Rota-Tinian-Saipan- 345 AM ChST Wed Aug 5 2026 ...WIND ADVISORY HAS BEEN CANCELLED... ...HIGH SURF ADVISORY IN EFFECT UNTIL 4 PM CHST SATURDAY ALONG WEST AND NORTH FACING REEFS... ...HIGH RIP CURRENT RISK IN EFFECT THROUGH SATURDAY AFTERNOON ALONG WEST, NORTH, EAST FACING REEFS... 36 hour Surf Zone Forecast for the Marianas from 600 AM Wednesday through 600 PM Thursday .TODAY... Rip Current Risk.....High *. Surf Height North facing reefs............9 to 10 feet. East facing reefs............7 to 9 feet. South facing reefs............4 to 6 feet. West facing reefs............8 to 10 feet. Swell/Period Primary swell................West at 5 to 7 feet. Primary period...............10 seconds. Secondary swell..............North at 4 to 6 feet. Secondary period.............14 seconds. Water Temperature Tanapag buoy..........86 Degrees. Max Heat Index.........Around 102. Winds...............Breezy. West at 15 to 25 mph. .TONIGHT... Rip Current Risk.....High *. Surf Height North facing reefs............9 to 10 feet. East facing reefs............7 to 9 feet. South facing reefs............4 to 6 feet. West facing reefs............8 to 10 feet. Swell/Period Primary swell................West at 5 to 7 feet. Primary period...............10 seconds. Secondary swell..............North at 4 to 6 feet. Secondary period.............14 seconds. Winds...............West at 10 to 20 mph. .THURSDAY... Rip Current Risk.....High *. Surf Height North facing reefs............8 to 10 feet. East facing reefs............7 to 9 feet. South facing reefs............4 to 6 feet. West facing reefs............9 to 12 feet. Swell/Period Primary swell................West at 5 to 7 feet. Primary period...............11 seconds. Secondary swell..............Northwest at 4 to 6 feet. Secondary period.............14 seconds. Max Heat Index.........Around 101. Winds...............West at 10 to 20 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... Low tide 0.7 feet at 6:20 AM Wednesday High tide 2.1 feet at 12:26 PM Wednesday Low tide 1.3 feet at 5:58 PM Wednesday High tide 2.6 feet at 12:02 AM Thursday Low tide 0.5 feet at 7:17 AM Thursday High tide 2.0 feet at 2:01 PM Thursday Low tide 1.6 feet at 6:53 PM Thursday At Rota Island... Low tide 0.7 feet at 6:14 AM Wednesday High tide 2.0 feet at 12:23 PM Wednesday Low tide 1.2 feet at 5:52 PM Wednesday High tide 2.4 feet at 11:59 PM Wednesday Low tide 0.4 feet at 7:11 AM Thursday High tide 1.9 feet at 1:58 PM Thursday Low tide 1.5 feet at 6:47 PM Thursday At Tinian Island... Low tide 0.2 feet at 5:57 AM Wednesday High tide 1.5 feet at 12:24 PM Wednesday Low tide 0.4 feet at 5:35 PM Wednesday High tide 1.9 feet at 12:00 AM Thursday Low tide 0.2 feet at 6:54 AM Thursday High tide 1.5 feet at 1:59 PM Thursday Low tide 0.5 feet at 6:30 PM Thursday At Tanapag Harbor, Saipan... Low tide 0.5 feet at 6:40 AM Wednesday High tide 1.6 feet at 12:44 PM Wednesday Low tide 1.0 feet at 5:59 PM Wednesday High tide 2.2 feet at 12:15 AM Thursday Low tide 0.3 feet at 7:35 AM Thursday High tide 1.6 feet at 2:18 PM Thursday Lowtide 1.3 feet at 6:49 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. $$