


Surf Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
381 FZPQ50 PGUM 131806 SRFGUM Surf Zone Forecast for the Mariana Islands National Weather Service Tiyan GU 406 AM ChST Mon Jul 14 2025 .DISCUSSION...There will be a moderate risk of rip currents along east facing reefs of the Marianas through at least Tuesday. Around midweek, a moderate risk looks to begin along south and west facing reefs as the west-southwest swell builds. $$ GUZ001-MPZ001>003-140915- Guam-Rota-Tinian-Saipan- 406 AM ChST Mon Jul 14 2025 36 hour Surf Zone Forecast for the Marianas from 600 AM Monday through 600 PM Tuesday .TODAY... Rip Current Risk.....Moderate *. Surf Height North facing reefs............2 to 3 feet. East facing reefs............4 to 6 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 3 feet. Swell/Period Primary swell................East at 3 to 4 feet. Primary period...............9 seconds. Secondary swell..............West at around 2 feet. Secondary period.............7 seconds. Water Temperature Ritidian buoy................86 Degrees. Max Heat Index.....................Around 100. Winds..............................Southeast at 10 to 15 mph. .TONIGHT... Rip Current Risk.....Moderate *. Surf Height North facing reefs............2 to 3 feet. East facing reefs............4 to 6 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 3 feet. Swell/Period Primary swell................East at 3 to 4 feet. Primary period...............9 seconds. Secondary swell..............West at around 2 feet. Secondary period.............7 seconds. Winds..............................Southeast at 5 to 15 mph. .TUESDAY... Rip Current Risk.....Low *. Surf Height North facing reefs............2 to 3 feet. East facing reefs............4 to 6 feet. South facing reefs............2 to 4 feet. West facing reefs............2 to 3 feet. Swell/Period Primary swell................East at 3 to 4 feet. Primary period...............9 seconds. Secondary swell..............West at around 2 feet. Secondary period.............7 seconds. Max Heat Index.....................Around 100. Winds..............................Southeast at 10 to 20 mph. Tide information for the next 36 hours... At Apra Harbor, Guam... High tide 2.5 feet at 8:52 AM Monday Low tide 0.0 feet at 4:06 PM Monday High tide 2.6 feet at 11:11 PM Monday Low tide 1.6 feet at 4:56 AM Tuesday High tide 2.4 feet at 9:45 AM Tuesday Low tide 0.2 feet at 4:46 PM Tuesday At Rota Island... High tide 2.4 feet at 8:49 AM Monday Low tide 0.0 feet at 4:00 PM Monday High tide 2.5 feet at 11:08 PM Monday Low tide 1.5 feet at 4:50 AM Tuesday High tide 2.3 feet at 9:42 AM Tuesday Low tide 0.2 feet at 4:40 PM Tuesday At Tinian Island... High tide 1.7 feet at 7:52 AM Monday Low tide -0.2 feet at 3:41 PM Monday High tide 1.7 feet at 11:05 PM Monday Low tide 1.2 feet at 4:30 AM Tuesday High tide 1.6 feet at 8:52 AM Tuesday Low tide 0.0 feet at 4:17 PM Tuesday At Tanapag Harbor, Saipan... High tide 2.0 feet at 8:47 AM Monday Low tide -0.3 feet at 4:14 PM Monday High tide 2.3 feet at 11:43 PM Monday Low tide 1.4 feet at 5:19 AM Tuesday High tide 1.9 feet at 9:46 AM Tuesday Low tide -0.1 feet at 4:53 PM 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. $$