This article sums it up pretty well: http://homeguides.sfgate.com/kind-tile-lay-outdoor-porch-93061.html

Basically, porcelain tile is the best tile for outdoor porches because it is so durable. But the cons are it is very difficult to cut, so many people hire someone to install it for them instead of DIY.

Look at aeratis pvc tongue and groove porch flooring

As long as your flooring will be covered from the elements (rain, snow etc.) Torly's Evertile and Everwood are warrantied for three season rooms. It's a floating click product that has cork on the back.

If your space is not going to be fully enclosed, your best bet would be indoor outdoor carpet or a porcelain tile for sure!

Best of luck.

Porcelain or Dura bodied ceramic would be your best products. Dura bodied or Duraceramic is fairly new to the market. It is a ceramic tile with all the pros of a porcelain but at a ceramic price point. I would advise you get a matte finish verses gloss finish for best traction.