I have had problems with a fence on one side of my garden because of wind in Montreal. The posts end up leaning away after a few years. Part of the problem might be how the posts were put in (perhaps not deep enough), but the wind is a big factor.
EDIT: Current fence design is 2m high with posts roughly every 15 feet, similar to the image below:
I'm wondering if a board-on-board fence design (aka shadow board or shadow box fence) will help much. It seems that there's more wood involved in this design, and so it will cost more. I'm not sure how much it reduces the wind load, and I'm trying to get an idea of the cost/benefit of the design.
Here's an image to give you an idea of what I'm talking about: