Hi, I think the spiders begin amassing on your location. It seems the number keeps on growing.
Or is it the summer effect? Keep in mind, that spider species mostly affected by the summer are commonly burrowing ones, which tries to escape the heat on the ground by venturing into cooler location (normally inside an insulated house). In Australia, this kinds of spiders are usually the most poisonous ones, e.g. Sydney Funnel Web spiders. Luckily, despite staying over a year in the northern suburbs, I never met any of those.