Anywhere in Perthshire (apart from the A9), my favourite part of Scotland. A close second is the Galloway Forest Park and Solway coast area. Other possibilities include, but are not limited to - western isles, Clyde islands, the borders, Edinburgh and the Lothians, Tayside, Fife, Grampian, anywhere north of Inverness, in fact anywhere with the exception of the built up area along the M8 corridor between Glasgow and Edinburgh! Get the weather, and there is nowhere better - however that "getting the weather" is the hard bit

. You've got a better chance the further you go from the west coast, but never guaranteed anywhere, and at ANY time of the year.