Camping out in rainy weather is not pleasant.
It is evening.

You are wet through, and there is a good two inches of water in the boat, and all the things are damp.

You find a place on the banks that is not quite so puddly as other places you have seen, and you land and lug out the tent, and two of you proceed to fix it.
It is soaked and heavy, and it flops about, and tumbles down on you, and clings round your head and makes you mad.

The rain is pouring steadily down all the time.

It is difficult enough to fix a tent in dry weather: in wet, the task becomes herculean.