Yes, ideal drying conditions are of course outdoors in the sunshine and any breeze - what you don't want is for rain to partly undo the process.
If the eaves give proper rain protection it sounds like a good spot given the current changeable weather.
Wherever and however you dry your crops, shallots take a lot more drying than garlic, having more 'juicy' necks and thicker skins - I sometimes struggle to dry my shallots quickly enough to prevent mould starting in the necks (I have been known to deploy a fan in the greenhouse in wet weather to try to speed things up!)