Solar Azimuth

Solar azimuth represents the sun's horizontal position around the compass, measured in degrees from true north (0°/360°) clockwise through east (90°), south (180°), and west (270°). While solar elevation tells you how high the sun sits above the horizon, azimuth tells you which direction it's shining from—equally critical information for photographers planning light direction and shadow angles. Understanding solar azimuth enables precise control over how light interacts with your subject. If you're photographing a building and want dramatic side-lighting that emphasizes architectural details and texture, you need to know when the sun's azimuth will position it 90° to your camera angle. Planning a backlit portrait with rim lighting and lens flare? You need the sun's azimuth to align behind your subject relative to your shooting position. Want front-lighting that evenly illuminates a landscape? You need the sun's azimuth opposite your camera direction.

Solar azimuth follows predictable but complex daily and seasonal patterns. In the Northern Hemisphere, the sun rises somewhere in the eastern half of the sky (azimuth between 45° and 135° depending on season), travels through the southern sky (reaching due south at azimuth 180° during solar noon), and sets in the western half (azimuth 225-315°). During summer, sunrise and sunset occur at more northerly azimuths (northeast and northwest), meaning the sun traces a wide arc high across the southern sky. During winter, sunrise and sunset shift to more southerly azimuths (southeast and southwest), and the sun follows a lower, shorter arc. At the equinoxes (spring and fall), the sun rises due east (90°) and sets due west (270°) everywhere on Earth. In the Southern Hemisphere, the pattern reverses—the sun travels through the northern sky, reaching due north at solar noon. At equatorial latitudes, the sun's azimuth path can pass directly overhead (through 0° or 180° azimuth at zenith), while at high latitudes the sun's azimuth changes more rapidly near sunrise and sunset but very slowly during midday.

For photographers, solar azimuth planning is essential for location-specific shoots. If you're photographing a monument and want the sun to illuminate a specific facade, you need to know exactly when the sun's azimuth will align with that direction. Landscape photographers use azimuth to predict when the sun will backlight mountain peaks, when it will create optimal cross-lighting for textured terrain, or when it will align with features like roads or rivers to create leading lines of light. Coastal photographers monitor azimuth to plan when the sun will set over the ocean versus land. Urban photographers use azimuth to predict when specific streets will be bathed in direct sun while surrounding areas remain in shadow—the famous Manhattanhenge phenomenon occurs when solar azimuth aligns precisely with Manhattan's east-west street grid. Astrophotographers use azimuth to predict where the Milky Way's Galactic Center will appear along the horizon. PhotoWeather calculates solar azimuth in real-time for your precise location, helping you plan when the sun will be positioned optimally for your specific composition. Combined with solar elevation and weather conditions, azimuth data enables photographers to predict lighting scenarios with precision, ensuring you arrive at locations when the sun's position—both height and direction—creates your desired effect.