The microclimate at the base of the falls is colder and wetter than the parking lot. Even on a 30°C July day, the Hornblower boat deck is breezy and damp from spray. A light layer or windbreaker under the provided poncho keeps you comfortable.
Wear closed-toe shoes with grip. The boat decks, observation platforms, and Journey Behind the Falls tunnels all get wet. Sandals are a slip hazard, and high heels are a non-starter on the Niagara Parkway promenade.
The one thing everyone forgets: a small dry bag or zip-lock for your phone. Even with the poncho, mist finds a way in. A waterproof phone pouch on a lanyard solves photos, video, and peace of mind in one purchase.