Tide Guide on Apple Watch shows more than the next high or low tide. You can follow tide height and progress, browse tide charts, check wind, swell, and currents where available, and review Sun and Moon conditions without opening the iPhone app.
During setup, use your current location to find a nearby station. After setup, choose Add Location from the station list to search by name or browse nearby stations. Opening Tide Guide on iPhone also syncs your selected, recent, and favorite stations, along with your units, time format, Tide Guide Pro access, and other supported preferences.
For the smoothest first sync, open Tide Guide once on both devices and keep them nearby. If the Watch has no data, make sure a station is selected on iPhone, then reopen the Watch app. Some no-data recovery flows may still use the iPhone as a fallback.