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Looks like your average festival tent, ie 1/2 season. The 'season' in tents refers mainly to its ability to repel the wet, the wind, and the higher the number, the weight of snow. Your typical 3 season will have strong guy ropes and the ability to vent in high winds so that the wind goes through the tent and does not turn it into a sail.
That said, for casual camping, even in Patagonia, you are likely to have the ability to choose your weather window. The tent you linked should be fine. Just make sure it's easy to put up. Oh, and practice. In the dark!
I think I know the answer to this one, but...
I have this Eurohike Ryde tent that I can get brought out to me.
http://www.amazon.co.uk/gp/aw/d/B00JWEN3IQ?pc_redir=1408095776&robot_redir=1
It's a bit tubby, but I can bare the weight for a short time and most importantly I don't care about it and would be happy to give it away once used.
Do you reckon it's a waste of time using it for Patagonia? I can't find anything to say what season it's for. Given the description I'm guessing it's only a 1 or a 2... But have no idea.