Station Name: Apra Harbor, Guam
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 13 feet

Sensor Depth: -5 feet

Nearest Address:
San Luis Road
Santa Rita, GU 96910
Sånta Rita-Sumai Municipali County

GPS Coordinates: 13.44339, 144.656361

Nearby Water Temperatures

High Surf Warning issued April 17 at 4:00PM ChST until April 18 at 10:00AM ChST by NWS Tiyan GU

Effective: Fri April 17, 2026, 4:00 PM
Expires: Sat April 18, 2026, 6:00 AM

* WHAT...For the High Surf Warning, dangerously large breaking waves of 16 to 20 feet. For the Coastal Flood Advisory, minor coastal flooding of 1 to 2 feet. For the High Surf Advisory, large breaking waves of 10 to 14 feet expected. For the High Rip Current Risk, dangerous rip currents. * WHERE...South, west and north facing reefs and shorelines of Guam and Rota. * WHEN...For the High Surf Warning, until 10 AM ChST Saturday. For the Coastal Flood Advisory, until 5 PM ChST Saturday. For the High Surf Advisory, from 10 AM Saturday to 5 PM ChST Sunday. For the High Rip Current Risk, through Sunday afternoon. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...As TY Sinlaku continues to move away, the primary swell and highest surf will be northwest. Seas will be slow to subside over the next couple of days. Surf heights of 12 to 18 feet are expected for Guam and Rota.

Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. Rip currents will be life threatening. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

Coastal Flood Advisory issued April 17 at 4:00PM ChST until April 18 at 5:00PM ChST by NWS Tiyan GU

Effective: Fri April 17, 2026, 4:00 PM
Expires: Sat April 18, 2026, 6:00 AM

* WHAT...For the High Surf Warning, dangerously large breaking waves of 16 to 20 feet. For the Coastal Flood Advisory, minor coastal flooding of 1 to 2 feet. For the High Surf Advisory, large breaking waves of 10 to 14 feet expected. For the High Rip Current Risk, dangerous rip currents. * WHERE...South, west and north facing reefs and shorelines of Guam and Rota. * WHEN...For the High Surf Warning, until 10 AM ChST Saturday. For the Coastal Flood Advisory, until 5 PM ChST Saturday. For the High Surf Advisory, from 10 AM Saturday to 5 PM ChST Sunday. For the High Rip Current Risk, through Sunday afternoon. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...As TY Sinlaku continues to move away, the primary swell and highest surf will be northwest. Seas will be slow to subside over the next couple of days. Surf heights of 12 to 18 feet are expected for Guam and Rota.

Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. Rip currents will be life threatening. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

Rip Current Statement issued April 17 at 4:00PM ChST until April 19 at 5:00PM ChST by NWS Tiyan GU

Effective: Fri April 17, 2026, 4:00 PM
Expires: Sat April 18, 2026, 6:00 AM

* WHAT...For the High Surf Warning, dangerously large breaking waves of 16 to 20 feet. For the Coastal Flood Advisory, minor coastal flooding of 1 to 2 feet. For the High Surf Advisory, large breaking waves of 10 to 14 feet expected. For the High Rip Current Risk, dangerous rip currents. * WHERE...South, west and north facing reefs and shorelines of Guam and Rota. * WHEN...For the High Surf Warning, until 10 AM ChST Saturday. For the Coastal Flood Advisory, until 5 PM ChST Saturday. For the High Surf Advisory, from 10 AM Saturday to 5 PM ChST Sunday. For the High Rip Current Risk, through Sunday afternoon. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...As TY Sinlaku continues to move away, the primary swell and highest surf will be northwest. Seas will be slow to subside over the next couple of days. Surf heights of 12 to 18 feet are expected for Guam and Rota.

Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. Rip currents will be life threatening. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

High Surf Advisory issued April 17 at 4:00PM ChST until April 19 at 5:00PM ChST by NWS Tiyan GU

Effective: Fri April 17, 2026, 4:00 PM
Expires: Sat April 18, 2026, 6:00 AM

* WHAT...For the High Surf Warning, dangerously large breaking waves of 16 to 20 feet. For the Coastal Flood Advisory, minor coastal flooding of 1 to 2 feet. For the High Surf Advisory, large breaking waves of 10 to 14 feet expected. For the High Rip Current Risk, dangerous rip currents. * WHERE...South, west and north facing reefs and shorelines of Guam and Rota. * WHEN...For the High Surf Warning, until 10 AM ChST Saturday. For the Coastal Flood Advisory, until 5 PM ChST Saturday. For the High Surf Advisory, from 10 AM Saturday to 5 PM ChST Sunday. For the High Rip Current Risk, through Sunday afternoon. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...As TY Sinlaku continues to move away, the primary swell and highest surf will be northwest. Seas will be slow to subside over the next couple of days. Surf heights of 12 to 18 feet are expected for Guam and Rota.

Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. Rip currents will be life threatening. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.