Why the rush...? Spend the summer in the south and
head north again in April.
How well insulated is your
boat?....that is as much a summer issue as a
winter one. Mind you a lot of Ovnis pass through... there always seem to be few in Montt.... dunno how they cope
insulation wise.
Summer ( I tend to divide the Patagonian year into only two seasons) can be damp between Penas and Faro Fairway.. in Nov/Dec once we had it rain on every day for 42 days... didn't rain 'all day'.. but did rain at least once every day. Along with the low cloud it can take the gloss off the scenery.
April/May the
weather can be a lot more settled with quite a bit of southerly
wind as shown in the last two pics.
First two pics November, next two May, of course you can get glorious days in Summer and crap in April/May..however...