>>2046763
>rain
find a place with a roof of sorts. depends on the country really. in the nordic countries you have tons of dedicated shelters, pic related. for most of central and western europe, cemeteries and churches are my go-top option. almost every single village in hungary for instance has its own cemetery, which often have a shed or a little building for funerals featuring a canopy. hiking shelters and observation towers are good. spain has a surprising amount of bird blinds which are amazing for spending the night. rural bus stops can work.

>bugs
not an issue. in the middle of summer mosquitoes can be rough i guess.