White Oak would be my second choice behind cypress. My mother had a set of porch chairs ( We didn't know they were Adirondak chairs) made in the late 50's They were made from white oak by a Mister Harris on Hwy 50 north of Raleigh, where I 540 is now. This is all he made in his shop, and all were white oak from local sawmills (Goldston's, Burke Brothers, and Norwood Brothers). These were kept on a covered porch. The finish was Waterlox. When my sister disposed of them a couple years back, she got o lot more than my mother paid for them. White oak is used to make buckets, WHISKEY Barrels and wine barrels. If it is good enough for Jack Daniels, then it is good enough for chairs.