Dress in lightweight, breathable clothing suitable for the weather conditions. During the summer months, such as June, July, and August, Niagara Falls experiences warm temperatures, so opt for light and airy outfits. Layering is also recommended as it allows you to adjust your clothing as needed.

What you wear at Niagara Falls depends entirely on the season, but waterproof gear is a year-round necessity if you plan to get close to the water. In the summer (June–August), light, breathable clothing like shorts and moisture-wicking t-shirts are best, but you should bring a light raincoat for the mist. In the winter (December–February), temperatures often drop below -6°C, so you must wear a heavy, insulated winter coat, thermal layers, and waterproof boots with excellent grip for icy paths. For the "shoulder" seasons of spring and fall, layering is the golden rule; mornings can be frosty while afternoons are mild. Regardless of the season, comfortable, closed-toe walking shoes are essential, as the park involves significant walking. If you take the "Maid of the Mist" or "Journey Behind the Falls," a poncho is provided, but your shoes will still likely get wet.