Miaoli sits on Taiwan's west coast, where the shoreline faces the Taiwan Strait and the surf revolves around mellow, sand-bottomed beach break. This is a small, beginner-friendly stretch rather than a marquee destination, so surfing in Miaoli is best approached as a relaxed session close to town rather than a hunt for heavy waves.
Most of the action centers on Zhuweizi, where Chu Nan is the standout beach break and effectively the anchor of the local lineup. Because the coast opens toward the strait, it picks up swell across a broad northern-through-western window, with the occasional southwest angle also finding its way in. The sand bottom keeps things forgiving, and waves tend to stay in a manageable range, roughly waist-high on the smaller days up to head-high when a solid swell lines up.
Wind is the key variable. A northeast breeze blows offshore here and cleans up the faces, which matters on this coast because the same northeast monsoon that drives the winter surf can just as easily blow it out at less sheltered spots. Tide is straightforward: mid and high water tend to work best, so plan your paddle-out around the rising and fuller stages rather than dead low.
For beginners, the mix of a sand bottom, forgiving size, and a single easy-to-find break makes Miaoli a comfortable place to log hours without much crowd pressure. It rewards patience more than spot-hopping. Watch the forecast for a northern or western swell paired with a northeast wind, aim for the mid-to-high tide window, and Chu Nan near Zhuweizi is the natural place to start.

