Wind Wave Direction

Wind Wave Direction specifies the compass bearing (in degrees) from which locally-generated wind waves propagate toward the observation point, using standard meteorological convention where 0° represents waves from true north, 90° from the east, 180° from the south, and 270° from the west. Unlike swell direction which can differ substantially from current wind direction due to swell's remote origins, wind wave direction closely tracks the current wind direction since these waves are actively generated by local wind stress on the water surface. For coastal photographers, understanding wind wave direction is essential for predicting surface texture patterns, wave approach angles relative to coastline orientation, and the character of breaking waves.

Wind wave direction interpretation depends on coastal geometry and photography objectives: offshore winds (wind waves traveling away from shore, opposite to the coastline's perpendicular) create smooth, glassy surface conditions as local wind waves propagate seaward while swell approaches unimpeded by local chop—ideal for capturing clean wave faces and reflections. Onshore winds (wind waves traveling toward shore, aligned with coastline perpendicular) generate choppy surface texture and spray-prone breaking conditions as local wind waves add to incoming swell—excellent for energetic, spray-filled action photography but challenging for clean compositions. Sideshore winds (wind waves traveling parallel to coastline) create cross-textured surface patterns that can add visual interest while allowing swell to break relatively cleanly. The angle between wind wave direction and coastline orientation affects wave breaking patterns: perpendicular wind waves create direct-impact shore breaks with maximum spray and whitewater; oblique wind waves produce side-lit surface texture emphasizing wave pattern geometry; parallel wind waves contribute minimal breaking action but texture the surface.

In mixed sea states where swell and wind waves originate from different directions, photographers must consider the vector addition of these components: for example, 2m swell from 270° (west) combined with 1m wind waves from 180° (south) creates a complex sea state with waves approaching from between southwest and west, exhibiting both the organized power of swell and the chaotic texture of wind chop. This directional complexity affects both aesthetics (mixed wave patterns can be photogenic or messy depending on magnitude) and safety (waves from multiple directions reduce predictability and complicate timing). PhotoWeather's Marine GFS forecasts provide separate wind wave and swell direction predictions, enabling photographers to visualize the complete directional wave environment. Practical applications: when scouting coastal locations, compare forecast wind wave direction against coastline orientation (easily determined from satellite imagery) to predict optimal shooting positions—locations where coastline orientation creates side-lighting or backlighting of wind wave texture often yield the most dramatic surface detail. For seascape photography emphasizing clean wave forms, target periods when wind wave direction differs significantly from swell direction by 90+ degrees, indicating wind waves aren't directly impacting incoming swell quality. For spray and action photography, seek periods when wind wave and swell directions align, creating additive wave energy focused in a single direction for maximum breaking intensity.