I have a pack of sweet peas to plant, but I haven't decided where to put them yet. We are kind of in the middle between cooler northern summers and hot humid southern ones here. I have seen the 100 degree high humidity bits start in May and not slack off till October, and sometimes we just have a few miserable days here and there.
I may plant them in big pots next to the porch on the north side of my house. It will get a few hours of sun in the morning and evening, but be protected from the bulk of the sun's rays. I can also let them climb netting to make a living sunshade for that porch; I have done it with runner beans in the past, but they needed more sun than that spot gets to truly thrive.