Boat tours stop around Halloween and start again around Easter.

Depends where you are, but that’s the rough rule. Most tour operators in temperate climates (New England, Great Lakes, Pacific Northwest) shut down by late October and resume in April or May. In places like Florida or the Gulf Coast, some run year-round, but even they often scale back in the dead of winter.

Weather is the main factor, not a strict calendar. Small boats won’t run if they can’t get passengers to stay warm, or if ice becomes a hazard. Bigger sightseeing boats might push into November, but don’t count on it. Always check the operator’s website—they usually post “final sail” and “first sail” dates a few weeks ahead.

If you’re planning a winter trip and want a boat tour, look for “holiday lights cruises” or “polar bear tours” in mild climates. Otherwise, assume they’re parked until spring.

Don’t show up in January expecting a harbor cruise.