One of my regular rides is the Westside Greenway in NYC. A paved mostly off street path that runs from Battery Park to Inwood, and runs right along the Hudson River for the most part. On this ride wind can really make a big difference. If the wind is primarly north or south than the ride in one direction can be a lot easier than the other, but a heavy crosswind can make it slow going both ways. It is rare when there is no breeze at all along the river.