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Guam
Wave Heights



Near Shore Wave Height Forecast
*Guam surf and weather forecast based on Boat Basin Rights


Tonight
Tonight<br>Mostly sunny, with a high near 89. North wind 11 to 13 mph.
Saturday NightSaturday Night<br>Scattered showers and thunderstorms.  Partly sunny, with a high near 87. Northwest wind 14 to 18 mph, with gusts as high as 23 mph.  Chance of precipitation is 40%.
Sunday Night
Sunday Night<br>Scattered showers and thunderstorms.  Mostly cloudy, with a high near 87. North northeast wind 9 to 11 mph becoming east southeast in the afternoon.  Chance of precipitation is 40%.
Monday Night
Monday Night<br>Scattered showers and thunderstorms.  Cloudy, with a high near 85. Breezy.  Chance of precipitation is 50%.
Tuesday Night
Tuesday Night<br>Scattered showers and thunderstorms before 3pm.  Cloudy, with a high near 86. Chance of precipitation is 50%.
Wednesday Night
Wednesday Night<br>Partly sunny, with a high near 88.
Thursday Night
Thursday Night<br>Isolated showers.  Mostly sunny, with a high near 89.
10AM-mph from the N


How this works

This chart shows you 7-days worth of swell/weather/wind information all in place. You have “incoming swell” (in feet) charted by the blue line on the gray graph. You have the weather icons for each day below the graph and you have the wind, speed and direction represented by the directional arrows topped by a blue “wind strength” indicator.

These nearshore wave height forecasts are custom built for each surf region using an average/above-average indicator break as a focal point. These forecasts aren’t just some knock-off of a generic Wavewatch III spectral point being regurgitated, these are true nearshore forecasts that use proprietary algorithms factoring in things like swell windows, island shadowing, bathymetry data, swell-period travel time, and other critical forecast components that tune the nearshore forecast specifically for your region, giving you a good solid overview of incoming swell, weather and wind, so that you can go out and find the best spot to score.

Guam Offshore Swell Forecast

How this works

The Offshore Swell Forecast shows you the 7-day forecast starting at the current time and going out from the latest forecast run. Mousing over any part of the graph (any line including the solid shaded area in the background) will pop up a new box near your pointer that shows the DATE/TIME/COMBINED BUOY HEIGHT in the top of the box, and then the specifics of the line you are hovering over like SWELL HEIGHT, SWELL PERIOD, SWELL DIRECTION (both in Simple Compass direction, like Northwest, and specific degrees 308). If you follow the contour of the line you can see hour by hour how that swell behaves over the course of the forecast period.

*Note: clicking on an individual swell in the legend of the chart you can “hide” that data stream making the chart easier to navigate